./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/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 0.1.25-f470102 [2019-12-07 18:18:15,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:18:15,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:18:15,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:18:15,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:18:15,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:18:15,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:18:15,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:18:15,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:18:15,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:18:15,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:18:15,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:18:15,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:18:15,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:18:15,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:18:15,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:18:15,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:18:15,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:18:15,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:18:15,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:18:15,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:18:15,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:18:15,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:18:15,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:18:15,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:18:15,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:18:15,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:18:15,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:18:15,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:18:15,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:18:15,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:18:15,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:18:15,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:18:15,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:18:15,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:18:15,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:18:15,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:18:15,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:18:15,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:18:15,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:18:15,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:18:15,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 18:18:15,938 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:18:15,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:18:15,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:18:15,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:18:15,939 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:18:15,939 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:18:15,939 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:18:15,939 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:18:15,940 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:18:15,940 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:18:15,940 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:18:15,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:18:15,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:18:15,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:18:15,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:18:15,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:18:15,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:18:15,941 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:18:15,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:18:15,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:18:15,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:18:15,942 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:18:15,942 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:18:15,943 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/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 [2019-12-07 18:18:16,039 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:18:16,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:18:16,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:18:16,051 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:18:16,052 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:18:16,052 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-12-07 18:18:16,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/data/b3a4ad1ad/03fb562739b54d7c902f3f77bc0c65be/FLAG08ef59190 [2019-12-07 18:18:16,422 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:18:16,422 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-12-07 18:18:16,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/data/b3a4ad1ad/03fb562739b54d7c902f3f77bc0c65be/FLAG08ef59190 [2019-12-07 18:18:16,434 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/data/b3a4ad1ad/03fb562739b54d7c902f3f77bc0c65be [2019-12-07 18:18:16,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:18:16,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:18:16,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:18:16,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:18:16,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:18:16,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e36ea05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16, skipping insertion in model container [2019-12-07 18:18:16,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:18:16,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:18:16,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:18:16,553 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:18:16,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:18:16,604 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:18:16,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16 WrapperNode [2019-12-07 18:18:16,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:18:16,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:18:16,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:18:16,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:18:16,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:18:16,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:18:16,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:18:16,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:18:16,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... [2019-12-07 18:18:16,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:18:16,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:18:16,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:18:16,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:18:16,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:18:16,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:18:16,768 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:18:16,768 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:18:16,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:16 BoogieIcfgContainer [2019-12-07 18:18:16,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:18:16,769 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:18:16,769 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:18:16,771 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:18:16,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:18:16,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:18:16" (1/3) ... [2019-12-07 18:18:16,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49e87cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:18:16, skipping insertion in model container [2019-12-07 18:18:16,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:18:16,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:18:16" (2/3) ... [2019-12-07 18:18:16,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@49e87cca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:18:16, skipping insertion in model container [2019-12-07 18:18:16,773 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:18:16,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:16" (3/3) ... [2019-12-07 18:18:16,774 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-12-07 18:18:16,803 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:18:16,803 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:18:16,803 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:18:16,803 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:18:16,803 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:18:16,803 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:18:16,803 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:18:16,803 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:18:16,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 18:18:16,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:18:16,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:18:16,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:18:16,829 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:18:16,829 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:18:16,829 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:18:16,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-12-07 18:18:16,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:18:16,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:18:16,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:18:16,830 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:18:16,830 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 18:18:16,835 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 8#L18true assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 5#L19-2true [2019-12-07 18:18:16,835 INFO L796 eck$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 [2019-12-07 18:18:16,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:16,839 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-12-07 18:18:16,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:16,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663214842] [2019-12-07 18:18:16,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:16,912 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:16,913 INFO L82 PathProgramCache]: Analyzing trace with hash 43246, now seen corresponding path program 1 times [2019-12-07 18:18:16,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:16,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619455341] [2019-12-07 18:18:16,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:16,923 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:16,924 INFO L82 PathProgramCache]: Analyzing trace with hash 29685291, now seen corresponding path program 1 times [2019-12-07 18:18:16,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:16,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641672750] [2019-12-07 18:18:16,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:16,933 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:16,966 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:18:16,966 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:18:16,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:18:16,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:18:16,967 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:18:16,967 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:16,967 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:18:16,967 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:18:16,967 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration1_Loop [2019-12-07 18:18:16,967 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:18:16,967 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:18:16,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:16,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:16,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,051 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:18:17,052 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,063 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:17,063 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,070 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:17,070 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,074 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:18:17,081 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,089 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:18:17,090 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:18:17,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:18:17,090 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:18:17,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:18:17,090 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:18:17,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:18:17,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:18:17,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration1_Loop [2019-12-07 18:18:17,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:18:17,091 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:18:17,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,143 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:18:17,147 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,150 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:17,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:17,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:17,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:17,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:17,156 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:18:17,156 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:18:17,160 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:17,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:17,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:17,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:17,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:17,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:18:17,167 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:18:17,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,174 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:17,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:17,176 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:18:17,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:17,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:17,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:17,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:18:17,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:18:17,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:18:17,185 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:18:17,185 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,188 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:18:17,188 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:18:17,189 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:18:17,189 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-12-07 18:18:17,192 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:18:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:17,218 INFO L264 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:18:17,219 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:17,227 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:18:17,227 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:17,247 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 18:18:17,248 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-12-07 18:18:17,283 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. [2019-12-07 18:18:17,284 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 [2019-12-07 18:18:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:18:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2019-12-07 18:18:17,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 3 letters. [2019-12-07 18:18:17,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:17,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 18:18:17,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:17,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 6 letters. [2019-12-07 18:18:17,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:17,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2019-12-07 18:18:17,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:17,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 9 states and 13 transitions. [2019-12-07 18:18:17,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 18:18:17,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 18:18:17,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-12-07 18:18:17,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:18:17,294 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-12-07 18:18:17,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-12-07 18:18:17,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 18:18:17,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 18:18:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2019-12-07 18:18:17,311 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-12-07 18:18:17,311 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-12-07 18:18:17,311 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:18:17,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2019-12-07 18:18:17,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:17,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:18:17,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:18:17,312 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-12-07 18:18:17,312 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:18:17,312 INFO L794 eck$LassoCheckResult]: Stem: 87#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 88#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 89#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 82#L21 assume main_~y~0 < main_~x~0; 83#L22-2 [2019-12-07 18:18:17,313 INFO L796 eck$LassoCheckResult]: Loop: 83#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 83#L22-2 [2019-12-07 18:18:17,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:17,313 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-12-07 18:18:17,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:17,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258424559] [2019-12-07 18:18:17,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:17,320 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:17,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:17,320 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2019-12-07 18:18:17,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:17,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9070443] [2019-12-07 18:18:17,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:17,324 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:17,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:17,325 INFO L82 PathProgramCache]: Analyzing trace with hash 29684850, now seen corresponding path program 1 times [2019-12-07 18:18:17,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:17,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478610361] [2019-12-07 18:18:17,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:17,332 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:17,364 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:18:17,364 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:18:17,364 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:18:17,365 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:18:17,365 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:18:17,365 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,365 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:18:17,365 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:18:17,365 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration2_Lasso [2019-12-07 18:18:17,365 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:18:17,365 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:18:17,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:17,426 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:18:17,426 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,436 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:17,436 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,443 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:17,443 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/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,450 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:17,451 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/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,454 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,457 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:17,457 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/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:17,465 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:17,465 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:17,469 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:17,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:18:17,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:29,517 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-12-07 18:18:29,524 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:18:29,524 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:18:29,524 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:18:29,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:18:29,524 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:18:29,524 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:29,525 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:18:29,525 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:18:29,525 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration2_Lasso [2019-12-07 18:18:29,525 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:18:29,525 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:18:29,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:29,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:29,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:29,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:29,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:29,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:29,592 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:18:29,592 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:29,595 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:29,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:29,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:29,597 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:29,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:29,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:18:29,599 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:18:29,604 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:29,612 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:29,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:29,614 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:29,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:29,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:29,618 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:18:29,618 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:18:29,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:18:29,636 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-12-07 18:18:29,636 INFO L444 ModelExtractionUtils]: 4 out of 13 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:29,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:18:29,644 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-12-07 18:18:29,644 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:18:29,644 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_~y~0 - 1 >= 0, -1*ULTIMATE.start_main_~x~0 + 1073741823 >= 0] [2019-12-07 18:18:29,651 INFO L297 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2019-12-07 18:18:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:29,680 INFO L264 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:18:29,680 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:29,697 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:18:29,697 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:29,697 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 [2019-12-07 18:18:29,697 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 18:18:29,733 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. [2019-12-07 18:18:29,733 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 [2019-12-07 18:18:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 18:18:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-12-07 18:18:29,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 1 letters. [2019-12-07 18:18:29,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:29,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 5 letters. Loop has 1 letters. [2019-12-07 18:18:29,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:29,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 18:18:29,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:29,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-12-07 18:18:29,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:29,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 21 transitions. [2019-12-07 18:18:29,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 18:18:29,736 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 18:18:29,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2019-12-07 18:18:29,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:18:29,737 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-12-07 18:18:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2019-12-07 18:18:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-12-07 18:18:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 18:18:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-12-07 18:18:29,738 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-12-07 18:18:29,738 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-12-07 18:18:29,738 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:18:29,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-12-07 18:18:29,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:29,739 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:18:29,739 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:18:29,739 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-12-07 18:18:29,740 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:18:29,740 INFO L794 eck$LassoCheckResult]: Stem: 169#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 170#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 171#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 172#L21 assume main_~y~0 < main_~x~0; 167#L22-2 assume !(main_~y~0 < main_~x~0); 168#L21-1 main_~x~0 := main_~x~0 - 1; 174#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 164#L21 assume main_~y~0 < main_~x~0; 165#L22-2 [2019-12-07 18:18:29,740 INFO L796 eck$LassoCheckResult]: Loop: 165#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 165#L22-2 [2019-12-07 18:18:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,740 INFO L82 PathProgramCache]: Analyzing trace with hash -421925037, now seen corresponding path program 1 times [2019-12-07 18:18:29,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:29,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483646847] [2019-12-07 18:18:29,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:29,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483646847] [2019-12-07 18:18:29,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:18:29,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:18:29,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996447098] [2019-12-07 18:18:29,767 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:18:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 2 times [2019-12-07 18:18:29,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:29,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219982523] [2019-12-07 18:18:29,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,772 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:29,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:18:29,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:18:29,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:18:29,784 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-12-07 18:18:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:18:29,795 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-12-07 18:18:29,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:18:29,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-12-07 18:18:29,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:29,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2019-12-07 18:18:29,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 18:18:29,797 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 18:18:29,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2019-12-07 18:18:29,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:18:29,797 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-12-07 18:18:29,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2019-12-07 18:18:29,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-12-07 18:18:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 18:18:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2019-12-07 18:18:29,799 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-12-07 18:18:29,799 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-12-07 18:18:29,799 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:18:29,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2019-12-07 18:18:29,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:29,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:18:29,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:18:29,800 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-12-07 18:18:29,800 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:18:29,800 INFO L794 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 [2019-12-07 18:18:29,800 INFO L796 eck$LassoCheckResult]: Loop: 197#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 197#L22-2 [2019-12-07 18:18:29,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,801 INFO L82 PathProgramCache]: Analyzing trace with hash -193177154, now seen corresponding path program 1 times [2019-12-07 18:18:29,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:29,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950368561] [2019-12-07 18:18:29,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:29,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950368561] [2019-12-07 18:18:29,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070372655] [2019-12-07 18:18:29,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:18:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:29,852 INFO L264 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:18:29,853 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:29,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:18:29,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-12-07 18:18:29,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940605750] [2019-12-07 18:18:29,872 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:18:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,872 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 3 times [2019-12-07 18:18:29,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:29,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543251242] [2019-12-07 18:18:29,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,876 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:29,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:18:29,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:18:29,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:18:29,884 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand 8 states. [2019-12-07 18:18:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:18:29,962 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-12-07 18:18:29,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:18:29,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2019-12-07 18:18:29,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:29,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 14 states and 16 transitions. [2019-12-07 18:18:29,963 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 18:18:29,963 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-12-07 18:18:29,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-12-07 18:18:29,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:18:29,964 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-12-07 18:18:29,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-12-07 18:18:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2019-12-07 18:18:29,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 18:18:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-12-07 18:18:29,965 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-12-07 18:18:29,965 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-12-07 18:18:29,965 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 18:18:29,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-12-07 18:18:29,965 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 18:18:29,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:18:29,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:18:29,966 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-07 18:18:29,966 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:18:29,966 INFO L794 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 284#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 285#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 281#L21 assume main_~y~0 < main_~x~0; 282#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 287#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 289#L22-2 assume !(main_~y~0 < main_~x~0); 288#L21-1 main_~x~0 := main_~x~0 - 1; 286#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 279#L21 assume main_~y~0 < main_~x~0; 280#L22-2 [2019-12-07 18:18:29,966 INFO L796 eck$LassoCheckResult]: Loop: 280#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 280#L22-2 [2019-12-07 18:18:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1691927373, now seen corresponding path program 2 times [2019-12-07 18:18:29,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:29,966 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872382047] [2019-12-07 18:18:29,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,978 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,979 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 4 times [2019-12-07 18:18:29,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:29,979 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545119025] [2019-12-07 18:18:29,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,983 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:29,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:29,983 INFO L82 PathProgramCache]: Analyzing trace with hash -910140986, now seen corresponding path program 3 times [2019-12-07 18:18:29,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:18:29,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862571071] [2019-12-07 18:18:29,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:18:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:18:29,996 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:18:30,039 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:18:30,039 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:18:30,039 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:18:30,039 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:18:30,040 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:18:30,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:18:30,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:18:30,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration5_Lasso [2019-12-07 18:18:30,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:18:30,040 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:18:30,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,093 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:18:30,093 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:30,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:30,098 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:30,098 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/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:30,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:30,104 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:30,104 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/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:30,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:30,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:30,113 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/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:30,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:30,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:18:30,121 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/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:18:30,125 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:18:30,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:18:30,217 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:18:30,219 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:18:30,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:18:30,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:18:30,219 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:18:30,219 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:18:30,219 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,219 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:18:30,219 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:18:30,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration5_Lasso [2019-12-07 18:18:30,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:18:30,220 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:18:30,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:18:30,269 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:18:30,269 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,272 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:30,273 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:30,273 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:18:30,274 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:30,274 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:30,274 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:30,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:18:30,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:18:30,275 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,279 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:30,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:30,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:18:30,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:30,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:30,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:30,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:18:30,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:18:30,283 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:30,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:30,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:18:30,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:30,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:30,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:30,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:18:30,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:18:30,289 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,293 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:30,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:30,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:30,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:30,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:30,296 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:18:30,296 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:18:30,299 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,302 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:18:30,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:18:30,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:18:30,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:18:30,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:18:30,307 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:18:30,307 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:18:30,313 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:18:30,320 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-12-07 18:18:30,320 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3df56177-9c70-4df9-a856-a9c45ef2a46e/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:18:30,323 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:18:30,325 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-12-07 18:18:30,325 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:18:30,325 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] [2019-12-07 18:18:30,328 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-12-07 18:18:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:30,348 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:18:30,348 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:30,355 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:18:30,355 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:30,355 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 [2019-12-07 18:18:30,355 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 18:18:30,374 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. [2019-12-07 18:18:30,374 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 [2019-12-07 18:18:30,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:18:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-12-07 18:18:30,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2019-12-07 18:18:30,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:30,375 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:18:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:30,392 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:18:30,393 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:30,398 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:18:30,398 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:30,398 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 [2019-12-07 18:18:30,399 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 18:18:30,421 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. [2019-12-07 18:18:30,421 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 [2019-12-07 18:18:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:18:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-12-07 18:18:30,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2019-12-07 18:18:30,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:30,421 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 18:18:30,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:18:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:30,439 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 18:18:30,440 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:18:30,446 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:18:30,446 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:18:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:18:30,446 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 [2019-12-07 18:18:30,446 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 18:18:30,464 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. [2019-12-07 18:18:30,464 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 [2019-12-07 18:18:30,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:18:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-12-07 18:18:30,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2019-12-07 18:18:30,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:30,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 1 letters. [2019-12-07 18:18:30,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:30,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2019-12-07 18:18:30,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:18:30,466 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2019-12-07 18:18:30,467 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:18:30,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2019-12-07 18:18:30,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:18:30,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:18:30,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:18:30,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:18:30,467 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:18:30,467 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:18:30,467 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:18:30,467 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 18:18:30,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:18:30,468 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:18:30,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:18:30,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:18:30 BoogieIcfgContainer [2019-12-07 18:18:30,473 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:18:30,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:18:30,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:18:30,474 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:18:30,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:18:16" (3/4) ... [2019-12-07 18:18:30,477 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:18:30,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:18:30,479 INFO L168 Benchmark]: Toolchain (without parser) took 14041.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.7 MB in the beginning and 985.6 MB in the end (delta: -41.0 MB). Peak memory consumption was 89.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:18:30,479 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:18:30,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:18:30,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.79 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. [2019-12-07 18:18:30,481 INFO L168 Benchmark]: Boogie Preprocessor took 11.54 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. [2019-12-07 18:18:30,481 INFO L168 Benchmark]: RCFGBuilder took 131.18 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. [2019-12-07 18:18:30,482 INFO L168 Benchmark]: BuchiAutomizer took 13704.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.6 MB in the end (delta: 121.3 MB). Peak memory consumption was 121.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:18:30,482 INFO L168 Benchmark]: Witness Printer took 3.62 ms. Allocated memory is still 1.2 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:18:30,484 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.79 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 11.54 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 131.18 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 13704.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.6 MB in the end (delta: 121.3 MB). Peak memory consumption was 121.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.62 ms. Allocated memory is still 1.2 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 13.6s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 13.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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, 0.0s 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: 12.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...