./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 90c8922c67b3eb8c55716b63a408098d1b23a21e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:29:55,026 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:29:55,027 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:29:55,033 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:29:55,033 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:29:55,034 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:29:55,035 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:29:55,036 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:29:55,037 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:29:55,038 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:29:55,038 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:29:55,039 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:29:55,039 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:29:55,040 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:29:55,041 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:29:55,041 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:29:55,042 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:29:55,043 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:29:55,044 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:29:55,045 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:29:55,046 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:29:55,047 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:29:55,048 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:29:55,048 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:29:55,049 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:29:55,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:29:55,050 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:29:55,050 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:29:55,051 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:29:55,052 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:29:55,052 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:29:55,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:29:55,052 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:29:55,053 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:29:55,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:29:55,054 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:29:55,054 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 11:29:55,061 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:29:55,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:29:55,062 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:29:55,062 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:29:55,062 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:29:55,063 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 11:29:55,063 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 11:29:55,063 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 11:29:55,063 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 11:29:55,063 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 11:29:55,063 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 11:29:55,064 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:29:55,064 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:29:55,064 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:29:55,064 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:29:55,064 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 11:29:55,064 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 11:29:55,065 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 11:29:55,065 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:29:55,065 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 11:29:55,065 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:29:55,065 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 11:29:55,065 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:29:55,065 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:29:55,066 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 11:29:55,066 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:29:55,066 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:29:55,066 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 11:29:55,067 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 11:29:55,067 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 -> 90c8922c67b3eb8c55716b63a408098d1b23a21e [2018-11-18 11:29:55,087 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:29:55,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:29:55,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:29:55,100 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:29:55,100 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:29:55,101 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.01-no-inv_true-termination_true-no-overflow.c [2018-11-18 11:29:55,138 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/data/2e8287b80/1d4dab457c554feda19e0f473243250e/FLAG97147b3a0 [2018-11-18 11:29:55,522 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:29:55,522 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/sv-benchmarks/c/termination-restricted-15/c.01-no-inv_true-termination_true-no-overflow.c [2018-11-18 11:29:55,525 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/data/2e8287b80/1d4dab457c554feda19e0f473243250e/FLAG97147b3a0 [2018-11-18 11:29:55,534 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/data/2e8287b80/1d4dab457c554feda19e0f473243250e [2018-11-18 11:29:55,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:29:55,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:29:55,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:29:55,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:29:55,540 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:29:55,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649eab1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55, skipping insertion in model container [2018-11-18 11:29:55,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:29:55,563 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:29:55,656 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:29:55,658 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:29:55,666 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:29:55,674 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:29:55,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55 WrapperNode [2018-11-18 11:29:55,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:29:55,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:29:55,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:29:55,675 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:29:55,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:29:55,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:29:55,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:29:55,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:29:55,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... [2018-11-18 11:29:55,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:29:55,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:29:55,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:29:55,708 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:29:55,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:29:55,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:29:55,877 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:29:55,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:29:55 BoogieIcfgContainer [2018-11-18 11:29:55,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:29:55,878 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 11:29:55,878 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 11:29:55,880 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 11:29:55,881 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 11:29:55,881 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 11:29:55" (1/3) ... [2018-11-18 11:29:55,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e1a5926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 11:29:55, skipping insertion in model container [2018-11-18 11:29:55,882 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 11:29:55,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:29:55" (2/3) ... [2018-11-18 11:29:55,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e1a5926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 11:29:55, skipping insertion in model container [2018-11-18 11:29:55,882 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 11:29:55,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:29:55" (3/3) ... [2018-11-18 11:29:55,884 INFO L375 chiAutomizerObserver]: Analyzing ICFG c.01-no-inv_true-termination_true-no-overflow.c [2018-11-18 11:29:55,931 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:29:55,932 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 11:29:55,932 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 11:29:55,932 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 11:29:55,932 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:29:55,932 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:29:55,932 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 11:29:55,932 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:29:55,932 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 11:29:55,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 11:29:55,962 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 11:29:55,962 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 11:29:55,962 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 11:29:55,968 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 11:29:55,968 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 11:29:55,968 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 11:29:55,968 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-18 11:29:55,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 11:29:55,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 11:29:55,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 11:29:55,969 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 11:29:55,969 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 11:29:55,976 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-3true [2018-11-18 11:29:55,976 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-3true assume true; 12#L10-1true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 13#L12-3true assume !true; 10#L12-4true main_~x~0 := main_~x~0 - 1; 8#L10-3true [2018-11-18 11:29:55,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:55,981 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 11:29:55,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:55,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:56,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-11-18 11:29:56,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:56,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:56,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:56,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:29:56,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:29:56,077 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 11:29:56,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:29:56,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:29:56,087 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-11-18 11:29:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:29:56,091 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-11-18 11:29:56,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:29:56,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-11-18 11:29:56,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 11:29:56,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-18 11:29:56,096 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 11:29:56,096 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 11:29:56,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-18 11:29:56,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 11:29:56,097 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 11:29:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-18 11:29:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-18 11:29:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 11:29:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-18 11:29:56,114 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 11:29:56,114 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-18 11:29:56,115 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 11:29:56,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-18 11:29:56,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 11:29:56,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 11:29:56,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 11:29:56,116 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 11:29:56,116 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 11:29:56,116 INFO L794 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 31#L10-3 [2018-11-18 11:29:56,116 INFO L796 eck$LassoCheckResult]: Loop: 31#L10-3 assume true; 36#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 35#L12-3 assume true; 33#L12-1 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 34#L12-4 main_~x~0 := main_~x~0 - 1; 31#L10-3 [2018-11-18 11:29:56,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,116 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-11-18 11:29:56,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:56,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:56,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,122 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-11-18 11:29:56,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:56,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:56,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-11-18 11:29:56,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:56,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:56,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,192 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 11:29:56,193 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 11:29:56,193 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 11:29:56,193 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 11:29:56,193 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 11:29:56,193 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 11:29:56,193 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 11:29:56,193 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 11:29:56,193 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 11:29:56,193 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 11:29:56,193 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 11:29:56,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,299 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 11:29:56,299 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,305 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,306 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,329 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:56,329 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,332 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,332 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,347 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:56,347 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,350 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,351 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,369 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 11:29:56,369 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,392 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 11:29:56,393 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 11:29:56,393 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 11:29:56,393 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 11:29:56,393 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 11:29:56,393 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 11:29:56,394 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 11:29:56,394 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 11:29:56,394 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 11:29:56,394 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 11:29:56,394 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 11:29:56,394 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 11:29:56,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,464 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 11:29:56,468 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 11:29:56,470 INFO L122 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 [2018-11-18 11:29:56,471 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:56,471 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:56,472 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:56,472 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:56,475 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:56,475 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:56,480 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:56,480 INFO L122 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 [2018-11-18 11:29:56,481 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:56,481 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:56,481 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:56,481 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:56,483 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:56,483 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:56,488 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:56,489 INFO L122 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 [2018-11-18 11:29:56,489 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:56,489 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 11:29:56,490 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:56,490 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:56,490 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:56,491 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 11:29:56,491 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 11:29:56,496 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 11:29:56,500 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 11:29:56,500 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 11:29:56,502 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 11:29:56,502 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 11:29:56,502 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 11:29:56,502 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-18 11:29:56,504 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 11:29:56,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:56,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:56,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:56,553 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 [2018-11-18 11:29:56,553 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-18 11:29:56,583 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-11-18 11:29:56,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 11:29:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 11:29:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 11:29:56,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 5 letters. [2018-11-18 11:29:56,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:56,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-18 11:29:56,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:56,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 10 letters. [2018-11-18 11:29:56,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:56,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2018-11-18 11:29:56,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:56,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 14 transitions. [2018-11-18 11:29:56,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-18 11:29:56,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-18 11:29:56,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-18 11:29:56,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 11:29:56,590 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 11:29:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-18 11:29:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 11:29:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 11:29:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-18 11:29:56,591 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 11:29:56,591 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-18 11:29:56,592 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 11:29:56,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-18 11:29:56,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:56,592 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 11:29:56,592 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 11:29:56,593 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 11:29:56,593 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 11:29:56,593 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 94#L10-3 assume true; 101#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 97#L12-3 [2018-11-18 11:29:56,593 INFO L796 eck$LassoCheckResult]: Loop: 97#L12-3 assume true; 96#L12-1 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 97#L12-3 [2018-11-18 11:29:56,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,593 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-11-18 11:29:56,593 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:56,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:56,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-11-18 11:29:56,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:56,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:56,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-11-18 11:29:56,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:56,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:56,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:56,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:56,640 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 11:29:56,640 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 11:29:56,640 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 11:29:56,640 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 11:29:56,640 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 11:29:56,640 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 11:29:56,640 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 11:29:56,640 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 11:29:56,640 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-18 11:29:56,640 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 11:29:56,641 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 11:29:56,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,725 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 11:29:56,725 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,733 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,733 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:56,754 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,757 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,757 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,759 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:56,760 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,775 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,776 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,777 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:56,777 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,793 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,793 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,795 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:56,795 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,818 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,818 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,842 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:56,842 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,849 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:56,849 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:56,877 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 11:29:56,877 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:56,899 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 11:29:56,899 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 11:29:56,900 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 11:29:56,900 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 11:29:56,900 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 11:29:56,900 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 11:29:56,900 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 11:29:56,900 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 11:29:56,900 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 11:29:56,900 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-18 11:29:56,900 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 11:29:56,900 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 11:29:56,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:56,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,021 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 11:29:57,021 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 11:29:57,021 INFO L122 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 [2018-11-18 11:29:57,022 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,022 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 11:29:57,023 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,023 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,023 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,023 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 11:29:57,023 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 11:29:57,024 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,025 INFO L122 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 [2018-11-18 11:29:57,025 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,025 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,025 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,026 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,027 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:57,027 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:57,030 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,030 INFO L122 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 [2018-11-18 11:29:57,031 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,031 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 11:29:57,031 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,031 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,031 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,032 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 11:29:57,032 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 11:29:57,033 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,033 INFO L122 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 [2018-11-18 11:29:57,034 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,034 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 11:29:57,034 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,034 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,034 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,034 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 11:29:57,035 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 11:29:57,035 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,036 INFO L122 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 [2018-11-18 11:29:57,036 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,036 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,036 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,037 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,038 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:57,038 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:57,046 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,046 INFO L122 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 [2018-11-18 11:29:57,046 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,047 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,047 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,047 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,050 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:57,050 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:57,053 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,053 INFO L122 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 [2018-11-18 11:29:57,053 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,054 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,054 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,054 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,056 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:57,056 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:57,090 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 11:29:57,116 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2018-11-18 11:29:57,117 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2018-11-18 11:29:57,117 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 11:29:57,119 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-18 11:29:57,119 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 11:29:57,119 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-18 11:29:57,128 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 11:29:57,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:57,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:57,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:57,182 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 11:29:57,183 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-18 11:29:57,203 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 28 states and 34 transitions. Complement of second has 5 states. [2018-11-18 11:29:57,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 11:29:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 11:29:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 11:29:57,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-18 11:29:57,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:57,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-18 11:29:57,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:57,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 11:29:57,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:57,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2018-11-18 11:29:57,206 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:57,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 23 transitions. [2018-11-18 11:29:57,206 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-18 11:29:57,206 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-18 11:29:57,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-11-18 11:29:57,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 11:29:57,207 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-11-18 11:29:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-11-18 11:29:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-11-18 11:29:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 11:29:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-11-18 11:29:57,208 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 11:29:57,208 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-18 11:29:57,209 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 11:29:57,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-11-18 11:29:57,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:57,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 11:29:57,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 11:29:57,210 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-18 11:29:57,210 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 11:29:57,210 INFO L794 eck$LassoCheckResult]: Stem: 181#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 179#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 180#L10-3 assume true; 186#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 185#L12-3 assume true; 193#L12-1 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 190#L12-4 main_~x~0 := main_~x~0 - 1; 187#L10-3 assume true; 188#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 183#L12-3 [2018-11-18 11:29:57,210 INFO L796 eck$LassoCheckResult]: Loop: 183#L12-3 assume true; 182#L12-1 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 183#L12-3 [2018-11-18 11:29:57,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash 383141811, now seen corresponding path program 2 times [2018-11-18 11:29:57,210 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:57,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-11-18 11:29:57,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:57,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1167906567, now seen corresponding path program 1 times [2018-11-18 11:29:57,230 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:57,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:57,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:29:57,278 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:29:57,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:57,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:57,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:29:57,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 11:29:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:29:57,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:29:57,327 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 7 states. [2018-11-18 11:29:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:29:57,371 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-18 11:29:57,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:29:57,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2018-11-18 11:29:57,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:57,373 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 21 states and 24 transitions. [2018-11-18 11:29:57,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 11:29:57,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 11:29:57,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2018-11-18 11:29:57,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 11:29:57,374 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-18 11:29:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2018-11-18 11:29:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2018-11-18 11:29:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 11:29:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-11-18 11:29:57,376 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-18 11:29:57,376 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-18 11:29:57,376 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 11:29:57,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2018-11-18 11:29:57,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:57,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 11:29:57,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 11:29:57,377 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2018-11-18 11:29:57,377 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 11:29:57,377 INFO L794 eck$LassoCheckResult]: Stem: 280#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 278#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 279#L10-3 assume true; 285#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 290#L12-3 assume true; 283#L12-1 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 284#L12-3 assume true; 291#L12-1 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 289#L12-4 main_~x~0 := main_~x~0 - 1; 286#L10-3 assume true; 287#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 282#L12-3 [2018-11-18 11:29:57,377 INFO L796 eck$LassoCheckResult]: Loop: 282#L12-3 assume true; 281#L12-1 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 282#L12-3 [2018-11-18 11:29:57,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1119453267, now seen corresponding path program 2 times [2018-11-18 11:29:57,378 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:29:57,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 3 times [2018-11-18 11:29:57,385 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:57,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2052765069, now seen corresponding path program 3 times [2018-11-18 11:29:57,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:57,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:57,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:29:57,418 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:29:57,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:29:57,437 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-18 11:29:57,437 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:29:57,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:57,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:29:57,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-18 11:29:57,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:29:57,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:29:57,479 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 8 states. [2018-11-18 11:29:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:29:57,516 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-18 11:29:57,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:29:57,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2018-11-18 11:29:57,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:57,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 27 states and 30 transitions. [2018-11-18 11:29:57,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 11:29:57,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 11:29:57,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 30 transitions. [2018-11-18 11:29:57,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 11:29:57,519 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2018-11-18 11:29:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 30 transitions. [2018-11-18 11:29:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-11-18 11:29:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 11:29:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-11-18 11:29:57,521 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 11:29:57,521 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 11:29:57,521 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 11:29:57,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 25 transitions. [2018-11-18 11:29:57,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 11:29:57,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 11:29:57,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 11:29:57,523 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1] [2018-11-18 11:29:57,523 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 11:29:57,523 INFO L794 eck$LassoCheckResult]: Stem: 390#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 388#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 389#L10-3 assume true; 395#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 409#L12-3 assume true; 393#L12-1 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 394#L12-3 assume true; 400#L12-1 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 406#L12-3 assume true; 402#L12-1 assume !(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824); 399#L12-4 main_~x~0 := main_~x~0 - 1; 396#L10-3 assume true; 398#L10-1 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 392#L12-3 [2018-11-18 11:29:57,523 INFO L796 eck$LassoCheckResult]: Loop: 392#L12-3 assume true; 391#L12-1 assume !!(main_~x~0 > main_~y~0 && main_~y~0 < 1073741824);main_~y~0 := 2 * main_~y~0; 392#L12-3 [2018-11-18 11:29:57,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2004311769, now seen corresponding path program 4 times [2018-11-18 11:29:57,523 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:57,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 4 times [2018-11-18 11:29:57,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:57,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:57,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1998260883, now seen corresponding path program 5 times [2018-11-18 11:29:57,536 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:29:57,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:29:57,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:29:57,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:29:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 11:29:57,599 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 11:29:57,599 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 11:29:57,599 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 11:29:57,599 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 11:29:57,599 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 11:29:57,599 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 11:29:57,599 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 11:29:57,600 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 11:29:57,600 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv_true-termination_true-no-overflow.c_Iteration6_Lasso [2018-11-18 11:29:57,600 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 11:29:57,600 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 11:29:57,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,652 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 11:29:57,652 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:57,657 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:57,657 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:57,661 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:57,661 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:57,676 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:57,676 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:57,678 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:57,678 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:57,694 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:57,694 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:57,696 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:57,696 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:57,713 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:57,713 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:57,728 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:57,728 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:57,732 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:57,732 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:57,735 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:57,735 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 11:29:57,751 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:57,751 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:57,775 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 11:29:57,775 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:57,780 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 11:29:57,780 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4daf656e-a5c5-48a6-8097-247ddf7169db/bin-2019/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 [2018-11-18 11:29:57,809 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 11:29:57,809 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 11:29:57,827 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 11:29:57,829 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 11:29:57,829 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 11:29:57,829 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 11:29:57,829 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 11:29:57,829 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 11:29:57,829 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 11:29:57,829 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 11:29:57,829 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 11:29:57,830 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.01-no-inv_true-termination_true-no-overflow.c_Iteration6_Lasso [2018-11-18 11:29:57,830 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 11:29:57,830 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 11:29:57,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 11:29:57,903 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 11:29:57,903 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 11:29:57,904 INFO L122 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 [2018-11-18 11:29:57,904 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,904 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 11:29:57,905 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,905 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,905 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,905 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 11:29:57,905 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 11:29:57,906 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,906 INFO L122 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 [2018-11-18 11:29:57,906 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,906 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 11:29:57,907 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,907 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,907 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,907 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 11:29:57,907 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 11:29:57,907 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,908 INFO L122 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 [2018-11-18 11:29:57,908 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,908 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 11:29:57,908 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,908 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,908 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,909 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 11:29:57,909 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 11:29:57,909 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,910 INFO L122 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 [2018-11-18 11:29:57,910 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,910 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,910 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,910 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,911 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:57,911 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:57,913 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 11:29:57,913 INFO L122 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 [2018-11-18 11:29:57,913 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 11:29:57,914 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 11:29:57,914 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 11:29:57,914 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 11:29:57,915 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 11:29:57,916 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 11:29:57,932 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 11:29:57,936 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 11:29:57,936 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 11:29:57,937 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 11:29:57,937 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-18 11:29:57,938 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 11:29:57,938 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483647 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-18 11:29:57,953 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 11:29:57,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:58,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:58,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:58,010 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 11:29:58,010 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 11:29:58,025 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 33 states and 38 transitions. Complement of second has 5 states. [2018-11-18 11:29:58,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 11:29:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 11:29:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 11:29:58,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 11:29:58,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:58,026 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 11:29:58,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:58,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:58,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:58,048 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 11:29:58,048 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 11:29:58,069 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 33 states and 38 transitions. Complement of second has 5 states. [2018-11-18 11:29:58,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 11:29:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 11:29:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 11:29:58,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 11:29:58,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:58,070 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 11:29:58,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:58,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:29:58,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:29:58,087 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 11:29:58,087 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-18 11:29:58,101 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 25 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 34 states and 40 transitions. Complement of second has 4 states. [2018-11-18 11:29:58,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 11:29:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 11:29:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-18 11:29:58,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-18 11:29:58,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:58,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 15 letters. Loop has 2 letters. [2018-11-18 11:29:58,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:58,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-18 11:29:58,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 11:29:58,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 40 transitions. [2018-11-18 11:29:58,105 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 11:29:58,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 0 states and 0 transitions. [2018-11-18 11:29:58,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 11:29:58,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 11:29:58,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 11:29:58,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 11:29:58,105 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:29:58,105 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:29:58,105 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:29:58,105 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 11:29:58,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:29:58,106 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 11:29:58,106 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 11:29:58,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 11:29:58 BoogieIcfgContainer [2018-11-18 11:29:58,111 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 11:29:58,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:29:58,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:29:58,111 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:29:58,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:29:55" (3/4) ... [2018-11-18 11:29:58,114 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 11:29:58,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:29:58,115 INFO L168 Benchmark]: Toolchain (without parser) took 2578.76 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.4 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -210.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:58,116 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:29:58,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.66 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:58,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.92 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:58,117 INFO L168 Benchmark]: Boogie Preprocessor took 13.22 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:58,117 INFO L168 Benchmark]: RCFGBuilder took 170.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -206.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:58,118 INFO L168 Benchmark]: BuchiAutomizer took 2232.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -22.1 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:58,118 INFO L168 Benchmark]: Witness Printer took 3.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:29:58,120 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 137.66 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.92 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.22 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 170.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -206.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2232.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -22.1 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2147483647 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 22 states and ocurred in iteration 5. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 67 SDtfs, 51 SDslu, 40 SDs, 0 SdLazy, 73 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc2 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf98 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf102 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...