./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:58:33,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:58:33,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:58:33,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:58:33,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:58:33,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:58:33,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:58:33,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:58:33,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:58:33,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:58:33,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:58:33,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:58:33,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:58:33,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:58:33,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:58:33,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:58:33,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:58:33,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:58:33,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:58:33,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:58:33,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:58:33,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:58:33,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:58:33,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:58:33,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:58:33,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:58:33,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:58:33,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:58:33,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:58:33,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:58:33,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:58:33,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:58:33,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:58:33,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:58:33,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:58:33,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:58:33,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:58:33,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:58:33,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:58:33,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:58:33,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:58:33,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:58:33,842 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:58:33,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:58:33,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:58:33,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:58:33,854 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:58:33,854 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:58:33,854 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:58:33,854 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:58:33,854 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:58:33,854 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:58:33,854 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:58:33,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:58:33,855 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:58:33,856 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:58:33,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:58:33,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:58:33,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:58:33,856 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:58:33,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:58:33,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:58:33,856 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:58:33,857 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:58:33,857 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 -> 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 [2019-10-22 08:58:33,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:58:33,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:58:33,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:58:33,902 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:58:33,902 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:58:33,903 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-10-22 08:58:33,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/data/d1c2ce154/a1ab821f029a4baeb6e1f5dc73cb877b/FLAGe3b562050 [2019-10-22 08:58:34,355 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:58:34,356 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-10-22 08:58:34,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/data/d1c2ce154/a1ab821f029a4baeb6e1f5dc73cb877b/FLAGe3b562050 [2019-10-22 08:58:34,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/data/d1c2ce154/a1ab821f029a4baeb6e1f5dc73cb877b [2019-10-22 08:58:34,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:58:34,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:58:34,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:34,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:58:34,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:58:34,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:34,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25eadbd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34, skipping insertion in model container [2019-10-22 08:58:34,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:34,764 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:58:34,776 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:58:34,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:34,912 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:58:34,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:58:34,998 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:58:34,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34 WrapperNode [2019-10-22 08:58:34,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:58:34,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:34,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:58:34,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:58:35,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:58:35,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:58:35,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:58:35,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:58:35,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... [2019-10-22 08:58:35,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:58:35,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:58:35,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:58:35,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:58:35,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:58:35,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:58:35,239 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:58:35,240 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:58:35,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:35 BoogieIcfgContainer [2019-10-22 08:58:35,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:58:35,241 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:58:35,241 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:58:35,247 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:58:35,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:35,250 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:58:34" (1/3) ... [2019-10-22 08:58:35,251 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cb0f773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:35, skipping insertion in model container [2019-10-22 08:58:35,251 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:35,251 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:58:34" (2/3) ... [2019-10-22 08:58:35,252 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@cb0f773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:58:35, skipping insertion in model container [2019-10-22 08:58:35,252 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:58:35,252 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:35" (3/3) ... [2019-10-22 08:58:35,254 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-10-22 08:58:35,341 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:58:35,341 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:58:35,341 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:58:35,342 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:58:35,343 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:58:35,343 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:58:35,343 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:58:35,344 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:58:35,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 08:58:35,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:58:35,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:35,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:35,407 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:58:35,407 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:35,407 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:58:35,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 08:58:35,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:58:35,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:35,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:35,410 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:58:35,411 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:58:35,418 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 8#L18true assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 5#L19-2true [2019-10-22 08:58:35,418 INFO L793 eck$LassoCheckResult]: Loop: 5#L19-2true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 3#L21true assume !(main_~y~0 < main_~x~0); 12#L21-1true main_~x~0 := main_~x~0 - 1; 5#L19-2true [2019-10-22 08:58:35,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:35,424 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-10-22 08:58:35,431 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:35,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003666190] [2019-10-22 08:58:35,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:35,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:35,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:35,524 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:35,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:35,525 INFO L82 PathProgramCache]: Analyzing trace with hash 43246, now seen corresponding path program 1 times [2019-10-22 08:58:35,525 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:35,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595902294] [2019-10-22 08:58:35,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:35,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:35,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:35,539 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:35,542 INFO L82 PathProgramCache]: Analyzing trace with hash 29685291, now seen corresponding path program 1 times [2019-10-22 08:58:35,542 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:35,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8139717] [2019-10-22 08:58:35,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:35,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:35,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:35,558 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:35,604 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:35,604 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:35,604 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:35,605 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:35,605 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:35,605 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:35,605 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:35,605 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:35,605 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration1_Loop [2019-10-22 08:58:35,605 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:35,606 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:35,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:35,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:35,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:35,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:35,711 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:35,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:35,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:35,721 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:35,722 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:35,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:35,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:35,733 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:35,733 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:35,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:35,739 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:35,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:35,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:35,759 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:35,764 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:35,764 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:35,764 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:35,764 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:35,764 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:35,764 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:35,764 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:35,765 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:35,765 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration1_Loop [2019-10-22 08:58:35,765 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:35,765 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:35,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:35,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:35,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:35,827 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:35,831 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:35,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:35,834 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:35,834 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:35,834 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:35,834 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:35,838 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:35,838 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:35,844 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:35,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:35,845 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:35,846 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:35,846 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:35,846 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:35,848 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:35,848 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:35,855 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:35,856 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:35,856 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:35,856 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:35,857 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:35,857 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:35,857 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:35,858 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:35,858 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:35,867 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:35,872 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:58:35,873 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:58:35,874 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:35,874 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:58:35,875 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:35,875 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-10-22 08:58:35,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:58:35,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:35,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:58:35,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:35,985 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:35,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:36,020 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 [2019-10-22 08:58:36,022 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-10-22 08:58:36,066 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2019-10-22 08:58:36,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2019-10-22 08:58:36,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 08:58:36,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:36,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:58:36,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:36,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 08:58:36,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:36,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2019-10-22 08:58:36,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:36,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 9 states and 13 transitions. [2019-10-22 08:58:36,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:58:36,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:58:36,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-10-22 08:58:36,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:36,082 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-10-22 08:58:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-10-22 08:58:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 08:58:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 08:58:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2019-10-22 08:58:36,102 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-10-22 08:58:36,102 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-10-22 08:58:36,102 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:58:36,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2019-10-22 08:58:36,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:36,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:36,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:36,104 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:58:36,104 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:58:36,104 INFO L791 eck$LassoCheckResult]: Stem: 87#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 88#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 89#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 82#L21 assume main_~y~0 < main_~x~0; 83#L22-2 [2019-10-22 08:58:36,104 INFO L793 eck$LassoCheckResult]: Loop: 83#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 83#L22-2 [2019-10-22 08:58:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:36,104 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-10-22 08:58:36,105 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:36,105 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763905896] [2019-10-22 08:58:36,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:36,105 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:36,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:36,116 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:36,117 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2019-10-22 08:58:36,117 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:36,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84980553] [2019-10-22 08:58:36,117 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:36,118 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:36,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:36,125 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash 29684850, now seen corresponding path program 1 times [2019-10-22 08:58:36,126 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:36,126 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18614398] [2019-10-22 08:58:36,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:36,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:36,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:36,144 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:36,207 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:36,207 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:36,207 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:36,207 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:36,207 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:36,208 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:36,208 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:36,208 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:36,208 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration2_Lasso [2019-10-22 08:58:36,208 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:36,208 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:36,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:36,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:36,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:36,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:36,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:36,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:36,292 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:36,292 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:36,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:36,301 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:36,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:36,305 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/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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) [2019-10-22 08:58:36,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:36,312 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:36,318 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:36,318 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:36,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:36,325 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:36,341 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:36,341 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:36,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:36,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:36,356 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:36,356 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:36,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:36,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:36,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:36,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:36,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:36,373 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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 [2019-10-22 08:58:36,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:36,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:58:48,527 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-10-22 08:58:48,536 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:48,536 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:48,536 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:48,536 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:48,536 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:48,536 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:48,537 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:48,537 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:48,537 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration2_Lasso [2019-10-22 08:58:48,537 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:48,537 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:48,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:48,617 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:48,617 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:48,618 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:48,618 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:48,619 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:48,619 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:48,619 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:48,620 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:48,621 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:48,625 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:48,625 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:48,626 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:48,626 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:48,626 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:48,626 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:48,630 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:48,630 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:48,730 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:48,779 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-10-22 08:58:48,791 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:48,792 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:48,796 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-10-22 08:58:48,796 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:48,796 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483645 Supporting invariants [-1*ULTIMATE.start_main_~x~0 + 1073741823 >= 0, 1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2019-10-22 08:58:48,809 INFO L297 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2019-10-22 08:58:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,871 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:58:48,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,872 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2019-10-22 08:58:48,872 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-10-22 08:58:48,925 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2019-10-22 08:58:48,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:58:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-10-22 08:58:48,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 1 letters. [2019-10-22 08:58:48,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 08:58:48,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 08:58:48,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:48,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-10-22 08:58:48,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:48,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 21 transitions. [2019-10-22 08:58:48,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:58:48,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:58:48,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2019-10-22 08:58:48,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:48,930 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-10-22 08:58:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2019-10-22 08:58:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-10-22 08:58:48,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:58:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-10-22 08:58:48,932 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-10-22 08:58:48,932 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-10-22 08:58:48,932 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:58:48,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-10-22 08:58:48,933 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:48,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:48,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:48,933 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-10-22 08:58:48,933 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:58:48,934 INFO L791 eck$LassoCheckResult]: Stem: 169#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 170#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 171#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 172#L21 assume main_~y~0 < main_~x~0; 167#L22-2 assume !(main_~y~0 < main_~x~0); 168#L21-1 main_~x~0 := main_~x~0 - 1; 174#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 164#L21 assume main_~y~0 < main_~x~0; 165#L22-2 [2019-10-22 08:58:48,934 INFO L793 eck$LassoCheckResult]: Loop: 165#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 165#L22-2 [2019-10-22 08:58:48,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,934 INFO L82 PathProgramCache]: Analyzing trace with hash -421925037, now seen corresponding path program 1 times [2019-10-22 08:58:48,934 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987980179] [2019-10-22 08:58:48,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:48,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987980179] [2019-10-22 08:58:48,965 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:58:48,965 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:58:48,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926869487] [2019-10-22 08:58:48,968 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:58:48,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:48,968 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 2 times [2019-10-22 08:58:48,968 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:48,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614177024] [2019-10-22 08:58:48,969 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,969 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:48,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:48,974 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:48,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:48,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:58:48,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:58:48,989 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-10-22 08:58:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:49,001 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-10-22 08:58:49,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:58:49,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-10-22 08:58:49,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:49,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2019-10-22 08:58:49,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 08:58:49,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:58:49,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2019-10-22 08:58:49,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:49,003 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-10-22 08:58:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2019-10-22 08:58:49,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-10-22 08:58:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 08:58:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2019-10-22 08:58:49,005 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-10-22 08:58:49,005 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-10-22 08:58:49,005 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:58:49,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2019-10-22 08:58:49,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:49,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:49,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:49,007 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-10-22 08:58:49,007 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:58:49,007 INFO L791 eck$LassoCheckResult]: Stem: 201#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 202#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 203#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 198#L21 assume main_~y~0 < main_~x~0; 199#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 205#L22-2 assume !(main_~y~0 < main_~x~0); 208#L21-1 main_~x~0 := main_~x~0 - 1; 206#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 196#L21 assume main_~y~0 < main_~x~0; 197#L22-2 [2019-10-22 08:58:49,007 INFO L793 eck$LassoCheckResult]: Loop: 197#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 197#L22-2 [2019-10-22 08:58:49,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,008 INFO L82 PathProgramCache]: Analyzing trace with hash -193177154, now seen corresponding path program 1 times [2019-10-22 08:58:49,008 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,008 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233668483] [2019-10-22 08:58:49,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,008 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233668483] [2019-10-22 08:58:49,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086815078] [2019-10-22 08:58:49,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:58:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,100 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:58:49,100 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-10-22 08:58:49,100 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398999610] [2019-10-22 08:58:49,101 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:58:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 3 times [2019-10-22 08:58:49,101 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108357405] [2019-10-22 08:58:49,101 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,108 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:49,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:58:49,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:58:49,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:58:49,121 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand 8 states. [2019-10-22 08:58:49,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:58:49,246 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-10-22 08:58:49,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:58:49,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2019-10-22 08:58:49,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:49,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 14 states and 16 transitions. [2019-10-22 08:58:49,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 08:58:49,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:58:49,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-10-22 08:58:49,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:58:49,250 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-10-22 08:58:49,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-10-22 08:58:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2019-10-22 08:58:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:58:49,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-10-22 08:58:49,251 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 08:58:49,251 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-10-22 08:58:49,251 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:58:49,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-10-22 08:58:49,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:58:49,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:58:49,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:58:49,254 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2019-10-22 08:58:49,254 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:58:49,255 INFO L791 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 284#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 285#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 281#L21 assume main_~y~0 < main_~x~0; 282#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 287#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 289#L22-2 assume !(main_~y~0 < main_~x~0); 288#L21-1 main_~x~0 := main_~x~0 - 1; 286#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 279#L21 assume main_~y~0 < main_~x~0; 280#L22-2 [2019-10-22 08:58:49,255 INFO L793 eck$LassoCheckResult]: Loop: 280#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 280#L22-2 [2019-10-22 08:58:49,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1691927373, now seen corresponding path program 2 times [2019-10-22 08:58:49,255 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825199103] [2019-10-22 08:58:49,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,256 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,270 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 4 times [2019-10-22 08:58:49,272 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984125435] [2019-10-22 08:58:49,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,273 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,284 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,285 INFO L82 PathProgramCache]: Analyzing trace with hash -910140986, now seen corresponding path program 3 times [2019-10-22 08:58:49,285 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:58:49,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626681762] [2019-10-22 08:58:49,285 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,285 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:58:49,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:58:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:58:49,305 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:58:49,371 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:49,371 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:49,372 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:49,372 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:49,372 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:58:49,372 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,372 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:49,372 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:49,372 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration5_Lasso [2019-10-22 08:58:49,372 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:49,372 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:49,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,485 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:49,485 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:49,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:49,498 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,502 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:49,502 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/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) [2019-10-22 08:58:49,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:49,510 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:49,513 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:49,524 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:49,524 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,528 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:49,528 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:49,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:49,536 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:58:49,541 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:49,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:58:49,548 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9469b575-015e-49cd-be7d-2f426ff688e7/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:58:49,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:58:49,567 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,684 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:58:49,687 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:58:49,687 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:58:49,687 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:58:49,687 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:58:49,687 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:58:49,687 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:58:49,687 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:58:49,688 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:58:49,688 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration5_Lasso [2019-10-22 08:58:49,688 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:58:49,688 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:58:49,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:58:49,794 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:58:49,794 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:58:49,795 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:49,796 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:49,796 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:49,796 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:49,796 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:49,796 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:49,797 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:49,797 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:49,797 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:49,798 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:49,798 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:49,798 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:49,798 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:49,799 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:49,799 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:49,799 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:49,799 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:49,806 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:49,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:49,807 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:49,807 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:58:49,807 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:49,807 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:49,807 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:49,808 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:58:49,808 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:58:49,808 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:49,809 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:49,809 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:49,809 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:49,809 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:49,810 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:49,811 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:49,811 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:49,814 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:58:49,814 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 08:58:49,815 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:58:49,815 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:58:49,815 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:58:49,815 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:58:49,818 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:58:49,819 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:58:49,867 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:58:49,892 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-10-22 08:58:49,895 INFO L444 ModelExtractionUtils]: 7 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:58:49,896 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:58:49,897 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-10-22 08:58:49,897 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:58:49,897 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 [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2019-10-22 08:58:49,904 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 08:58:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:49,960 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:58:49,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:49,961 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:58:49,961 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:58:50,000 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 6 states. [2019-10-22 08:58:50,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-10-22 08:58:50,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2019-10-22 08:58:50,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:50,002 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:58:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:58:50,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,051 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:58:50,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:50,052 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:58:50,052 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:58:50,080 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 6 states. [2019-10-22 08:58:50,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-10-22 08:58:50,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2019-10-22 08:58:50,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:50,081 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:58:50,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:58:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:58:50,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:58:50,123 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:58:50,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:58:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:58:50,124 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:58:50,124 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:58:50,158 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 14 states and 16 transitions. Complement of second has 5 states. [2019-10-22 08:58:50,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:58:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:58:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-10-22 08:58:50,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2019-10-22 08:58:50,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:50,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 1 letters. [2019-10-22 08:58:50,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:50,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2019-10-22 08:58:50,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:58:50,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2019-10-22 08:58:50,162 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:50,162 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2019-10-22 08:58:50,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:58:50,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:58:50,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:58:50,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:58:50,162 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:50,163 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:50,163 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:58:50,163 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 08:58:50,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:58:50,163 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:58:50,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:58:50,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:58:50 BoogieIcfgContainer [2019-10-22 08:58:50,173 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:58:50,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:58:50,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:58:50,174 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:58:50,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:58:35" (3/4) ... [2019-10-22 08:58:50,178 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:58:50,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:58:50,182 INFO L168 Benchmark]: Toolchain (without parser) took 15430.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.1 MB in the beginning and 1.0 GB in the end (delta: -76.8 MB). Peak memory consumption was 47.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:50,183 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:50,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -179.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:50,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:50,186 INFO L168 Benchmark]: Boogie Preprocessor took 12.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:50,186 INFO L168 Benchmark]: RCFGBuilder took 202.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:50,187 INFO L168 Benchmark]: BuchiAutomizer took 14931.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:58:50,187 INFO L168 Benchmark]: Witness Printer took 6.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:58:50,190 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -179.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 202.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 14931.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 11.5 GB. * Witness Printer took 6.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2147483645 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.8s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 13.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 37 SDslu, 11 SDs, 0 SdLazy, 108 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax158 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf92 smp100 dnf100 smp100 tf102 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...