./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c -s /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 0.1.25-f470102 [2019-12-07 11:59:12,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:59:12,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:59:12,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:59:12,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:59:12,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:59:12,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:59:12,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:59:12,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:59:12,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:59:12,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:59:12,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:59:12,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:59:12,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:59:12,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:59:12,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:59:12,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:59:12,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:59:12,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:59:12,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:59:12,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:59:12,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:59:12,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:59:12,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:59:12,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:59:12,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:59:12,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:59:12,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:59:12,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:59:12,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:59:12,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:59:12,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:59:12,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:59:12,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:59:12,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:59:12,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:59:12,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:59:12,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:59:12,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:59:12,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:59:12,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:59:12,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 11:59:12,644 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:59:12,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:59:12,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:59:12,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:59:12,645 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:59:12,645 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 11:59:12,645 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 11:59:12,645 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 11:59:12,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 11:59:12,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 11:59:12,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 11:59:12,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:59:12,647 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 11:59:12,647 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:59:12,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 11:59:12,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:59:12,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:59:12,647 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 11:59:12,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:59:12,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:59:12,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:59:12,648 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 11:59:12,649 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 11:59:12,649 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:12,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:59:12,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:59:12,777 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:59:12,778 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:59:12,778 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:59:12,779 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-12-07 11:59:12,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/data/3ba81b3f5/cb4a56b164b740ce94c5efae4b8d231b/FLAG749d96fa7 [2019-12-07 11:59:13,259 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:59:13,259 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-12-07 11:59:13,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/data/3ba81b3f5/cb4a56b164b740ce94c5efae4b8d231b/FLAG749d96fa7 [2019-12-07 11:59:13,622 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/data/3ba81b3f5/cb4a56b164b740ce94c5efae4b8d231b [2019-12-07 11:59:13,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:59:13,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:59:13,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:59:13,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:59:13,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:59:13,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e583495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13, skipping insertion in model container [2019-12-07 11:59:13,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:59:13,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:59:13,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:59:13,750 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:59:13,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:59:13,800 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:59:13,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13 WrapperNode [2019-12-07 11:59:13,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:59:13,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:59:13,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:59:13,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:59:13,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:59:13,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:59:13,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:59:13,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:59:13,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... [2019-12-07 11:59:13,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:59:13,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:59:13,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:59:13,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:59:13,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:13,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:59:13,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:59:13,961 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:59:13,961 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 11:59:13,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:59:13 BoogieIcfgContainer [2019-12-07 11:59:13,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:59:13,962 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 11:59:13,962 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 11:59:13,965 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 11:59:13,965 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:59:13,965 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 11:59:13" (1/3) ... [2019-12-07 11:59:13,966 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b79a674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:59:13, skipping insertion in model container [2019-12-07 11:59:13,966 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:59:13,966 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:59:13" (2/3) ... [2019-12-07 11:59:13,966 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b79a674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:59:13, skipping insertion in model container [2019-12-07 11:59:13,966 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:59:13,966 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:59:13" (3/3) ... [2019-12-07 11:59:13,967 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-wise.c [2019-12-07 11:59:13,997 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 11:59:13,997 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 11:59:13,997 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 11:59:13,997 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:59:13,997 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:59:13,997 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 11:59:13,997 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:59:13,997 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 11:59:14,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 11:59:14,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:14,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:59:14,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:59:14,023 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 11:59:14,023 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:59:14,023 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 11:59:14,024 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 11:59:14,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:14,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:59:14,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:59:14,025 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 11:59:14,025 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:59:14,030 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~x~0 >= 0 && main_~y~0 >= 0; 7#L19-2true [2019-12-07 11:59:14,030 INFO L796 eck$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 [2019-12-07 11:59:14,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,034 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-12-07 11:59:14,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:14,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052808048] [2019-12-07 11:59:14,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,109 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-12-07 11:59:14,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:14,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44204216] [2019-12-07 11:59:14,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,120 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-12-07 11:59:14,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:14,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256748065] [2019-12-07 11:59:14,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,130 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:14,175 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:14,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:14,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:14,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:14,176 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:59:14,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:14,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:14,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-12-07 11:59:14,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:14,177 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:14,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,243 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:14,244 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:14,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:14,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:59:14,255 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:14,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:14,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:59:14,263 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:14,267 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:59:14,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:14,405 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:59:14,406 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:14,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:14,406 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:14,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:14,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:59:14,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:14,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:14,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration1_Loop [2019-12-07 11:59:14,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:14,407 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:14,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,445 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:14,448 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,452 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 [2019-12-07 11:59:14,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:59:14,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:59:14,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:59:14,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:59:14,458 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:59:14,458 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:59:14,462 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,467 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 [2019-12-07 11:59:14,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:59:14,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:59:14,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:59:14,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:59:14,470 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:59:14,471 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:59:14,474 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,479 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 [2019-12-07 11:59:14,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:59:14,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:59:14,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:59:14,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:59:14,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:59:14,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:59:14,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:59:14,485 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:59:14,490 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 11:59:14,490 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,494 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:59:14,494 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:59:14,494 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:59:14,495 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 [] [2019-12-07 11:59:14,498 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:59:14,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,524 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:59:14,525 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,532 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:59:14,533 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:14,544 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 [2019-12-07 11:59:14,544 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-12-07 11:59:14,572 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. [2019-12-07 11:59:14,572 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 [2019-12-07 11:59:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:59:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-12-07 11:59:14,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 11:59:14,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:14,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 11:59:14,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:14,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 11:59:14,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:14,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-12-07 11:59:14,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:14,581 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-12-07 11:59:14,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 11:59:14,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 11:59:14,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 11:59:14,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:59:14,582 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 11:59:14,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 11:59:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 11:59:14,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 11:59:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-12-07 11:59:14,599 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 11:59:14,599 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 11:59:14,599 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 11:59:14,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-12-07 11:59:14,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:14,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:59:14,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:59:14,600 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 11:59:14,600 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:59:14,600 INFO L794 eck$LassoCheckResult]: Stem: 72#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 73#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 74#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 79#L19 assume !(main_~x~0 < main_~y~0);main_~y~0 := 1 + main_~y~0; 75#L19-2 [2019-12-07 11:59:14,600 INFO L796 eck$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 [2019-12-07 11:59:14,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,600 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-12-07 11:59:14,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:14,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460068545] [2019-12-07 11:59:14,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,608 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-12-07 11:59:14,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:14,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608750195] [2019-12-07 11:59:14,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:14,613 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,613 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2019-12-07 11:59:14,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:14,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447503998] [2019-12-07 11:59:14,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:14,649 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447503998] [2019-12-07 11:59:14,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:14,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:59:14,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939603655] [2019-12-07 11:59:14,684 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:14,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:14,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:14,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:14,685 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:59:14,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:14,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:14,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-12-07 11:59:14,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:14,685 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:14,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,724 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:14,724 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:14,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:14,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:59:14,732 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:14,737 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:59:14,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:14,878 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:59:14,879 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:14,879 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:14,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:14,879 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:14,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:59:14,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:14,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:14,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:14,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration2_Loop [2019-12-07 11:59:14,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:14,880 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:14,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:14,914 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:14,914 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,917 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 [2019-12-07 11:59:14,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:59:14,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:59:14,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:59:14,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:59:14,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:59:14,920 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:59:14,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,927 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 [2019-12-07 11:59:14,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:59:14,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:59:14,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:59:14,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:59:14,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:59:14,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:59:14,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:59:14,931 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:59:14,935 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:59:14,935 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:14,940 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:59:14,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:59:14,940 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:59:14,941 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 [] [2019-12-07 11:59:14,942 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:59:14,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,962 INFO L264 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:59:14,962 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:14,966 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:59:14,966 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:14,967 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 [2019-12-07 11:59:14,967 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 11:59:14,974 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. [2019-12-07 11:59:14,974 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 [2019-12-07 11:59:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:59:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 11:59:14,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 11:59:14,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:14,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 11:59:14,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:14,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 11:59:14,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:14,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-12-07 11:59:14,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:14,977 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-12-07 11:59:14,977 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 11:59:14,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 11:59:14,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-12-07 11:59:14,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:59:14,977 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 11:59:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-12-07 11:59:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 11:59:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 11:59:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-12-07 11:59:14,978 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-12-07 11:59:14,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:59:14,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:59:14,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:59:14,981 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 5 states. [2019-12-07 11:59:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:14,997 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-12-07 11:59:14,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:59:14,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-12-07 11:59:14,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:14,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2019-12-07 11:59:14,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 11:59:14,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 11:59:14,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2019-12-07 11:59:14,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:59:14,999 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-12-07 11:59:15,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2019-12-07 11:59:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2019-12-07 11:59:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 11:59:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 11:59:15,001 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 11:59:15,001 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 11:59:15,001 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 11:59:15,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-12-07 11:59:15,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:15,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:59:15,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:59:15,002 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 11:59:15,002 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:59:15,002 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 158#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 160#L19 [2019-12-07 11:59:15,002 INFO L796 eck$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 [2019-12-07 11:59:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-12-07 11:59:15,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:15,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599236624] [2019-12-07 11:59:15,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,008 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2019-12-07 11:59:15,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:15,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835458492] [2019-12-07 11:59:15,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,014 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2019-12-07 11:59:15,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:15,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213877830] [2019-12-07 11:59:15,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,023 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:15,042 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:15,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:15,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:15,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:15,043 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:59:15,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:15,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:15,043 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-12-07 11:59:15,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:15,044 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:15,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,077 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:15,078 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:15,081 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:15,084 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:59:15,084 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:15,089 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:59:15,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:15,369 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:59:15,371 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:15,371 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:15,372 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:15,372 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:15,372 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:59:15,372 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,372 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:15,372 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:15,372 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration3_Loop [2019-12-07 11:59:15,372 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:15,372 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:15,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,407 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:15,408 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:15,411 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 [2019-12-07 11:59:15,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:59:15,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:59:15,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:59:15,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:59:15,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:59:15,413 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:59:15,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:59:15,415 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:59:15,418 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:59:15,418 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:59:15,421 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:59:15,421 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:59:15,421 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 [] [2019-12-07 11:59:15,423 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:59:15,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,442 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,442 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,446 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,447 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:15,466 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 [2019-12-07 11:59:15,466 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 11:59:15,473 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. [2019-12-07 11:59:15,473 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 [2019-12-07 11:59:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:59:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-12-07 11:59:15,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 11:59:15,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 11:59:15,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-12-07 11:59:15,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-12-07 11:59:15,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:15,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2019-12-07 11:59:15,475 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 11:59:15,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 11:59:15,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-12-07 11:59:15,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:59:15,475 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-12-07 11:59:15,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-12-07 11:59:15,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 11:59:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 11:59:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-12-07 11:59:15,476 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-12-07 11:59:15,476 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-12-07 11:59:15,476 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 11:59:15,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-12-07 11:59:15,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:59:15,477 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:59:15,477 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:59:15,477 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2019-12-07 11:59:15,477 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:59:15,477 INFO L794 eck$LassoCheckResult]: Stem: 211#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 212#L17 assume main_~x~0 >= 0 && main_~y~0 >= 0; 213#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 214#L19 assume main_~x~0 < main_~y~0;main_~x~0 := 1 + main_~x~0; 215#L19-2 assume !!(main_~x~0 - main_~y~0 > 2 || main_~y~0 - main_~x~0 > 2); 216#L19 [2019-12-07 11:59:15,477 INFO L796 eck$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 [2019-12-07 11:59:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,478 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2019-12-07 11:59:15,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:15,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623308884] [2019-12-07 11:59:15,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,485 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2019-12-07 11:59:15,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:15,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501914788] [2019-12-07 11:59:15,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:59:15,489 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:59:15,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2019-12-07 11:59:15,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:59:15,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747636303] [2019-12-07 11:59:15,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:59:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:15,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747636303] [2019-12-07 11:59:15,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:59:15,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 11:59:15,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400273514] [2019-12-07 11:59:15,525 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:15,525 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:15,525 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:15,525 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:15,526 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:59:15,526 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,526 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:15,526 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:15,526 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-12-07 11:59:15,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:15,526 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:15,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,558 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:15,558 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:15,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:59:15,561 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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 [2019-12-07 11:59:15,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:59:15,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:59:15,833 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:59:15,835 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:59:15,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:59:15,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:59:15,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:59:15,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:59:15,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:59:15,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:59:15,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-wise.c_Iteration4_Loop [2019-12-07 11:59:15,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:59:15,836 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:59:15,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:59:15,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:59:15,866 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_99e36f31-d23e-4d3d-a035-cd009a44d53d/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,875 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 [2019-12-07 11:59:15,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:59:15,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:59:15,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:59:15,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:59:15,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:59:15,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:59:15,877 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:59:15,879 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:59:15,882 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 11:59:15,882 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_99e36f31-d23e-4d3d-a035-cd009a44d53d/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:59:15,895 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:59:15,895 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:59:15,896 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:59:15,896 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 [] [2019-12-07 11:59:15,898 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:59:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,909 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,909 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,911 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,912 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:15,919 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 [2019-12-07 11:59:15,919 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 11:59:15,923 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. [2019-12-07 11:59:15,923 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 [2019-12-07 11:59:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:59:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-12-07 11:59:15,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 11:59:15,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,924 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:59:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,935 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,935 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,937 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,938 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:15,947 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 [2019-12-07 11:59:15,947 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 11:59:15,949 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. [2019-12-07 11:59:15,949 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 [2019-12-07 11:59:15,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:59:15,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2019-12-07 11:59:15,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 11:59:15,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,950 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 11:59:15,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:59:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,960 INFO L264 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,960 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:59:15,962 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 11:59:15,962 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:59:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:59:15,970 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 [2019-12-07 11:59:15,970 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-12-07 11:59:15,976 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. [2019-12-07 11:59:15,976 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 [2019-12-07 11:59:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:59:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 11:59:15,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2019-12-07 11:59:15,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2019-12-07 11:59:15,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 11:59:15,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:59:15,978 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-12-07 11:59:15,978 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:59:15,978 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2019-12-07 11:59:15,978 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 11:59:15,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 11:59:15,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 11:59:15,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:59:15,979 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:59:15,979 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:59:15,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:59:15,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 11:59:15,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 11:59:15,979 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-12-07 11:59:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:59:15,980 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 11:59:15,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 11:59:15,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 11:59:15,980 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:59:15,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 11:59:15,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 11:59:15,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 11:59:15,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 11:59:15,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:59:15,980 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:59:15,981 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:59:15,981 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:59:15,981 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 11:59:15,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:59:15,981 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:59:15,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 11:59:15,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 11:59:15 BoogieIcfgContainer [2019-12-07 11:59:15,985 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 11:59:15,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:59:15,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:59:15,986 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:59:15,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:59:13" (3/4) ... [2019-12-07 11:59:15,988 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:59:15,988 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:59:15,990 INFO L168 Benchmark]: Toolchain (without parser) took 2360.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -116.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:59:15,990 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:59:15,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -157.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:59:15,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:59:15,991 INFO L168 Benchmark]: Boogie Preprocessor took 12.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:59:15,991 INFO L168 Benchmark]: RCFGBuilder took 126.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:59:15,992 INFO L168 Benchmark]: BuchiAutomizer took 2023.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:59:15,992 INFO L168 Benchmark]: Witness Printer took 2.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:59:15,995 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -157.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.30 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.08 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 126.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2023.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.61 ms. Allocated memory is still 1.1 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 1.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...