./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.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_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 36155f521cfe170e9c03fd915618e68821fe0430 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:45:29,555 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:45:29,556 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:45:29,566 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:45:29,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:45:29,568 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:45:29,569 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:45:29,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:45:29,572 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:45:29,573 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:45:29,574 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:45:29,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:45:29,575 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:45:29,575 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:45:29,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:45:29,577 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:45:29,578 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:45:29,580 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:45:29,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:45:29,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:45:29,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:45:29,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:45:29,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:45:29,587 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:45:29,587 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:45:29,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:45:29,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:45:29,589 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:45:29,590 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:45:29,591 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:45:29,591 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:45:29,592 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:45:29,592 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:45:29,592 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:45:29,593 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:45:29,593 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:45:29,594 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 10:45:29,606 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:45:29,606 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:45:29,607 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:45:29,607 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:45:29,607 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:45:29,607 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 10:45:29,608 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 10:45:29,608 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 10:45:29,608 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 10:45:29,608 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 10:45:29,608 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 10:45:29,608 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:45:29,608 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 10:45:29,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:45:29,609 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:45:29,609 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 10:45:29,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 10:45:29,609 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 10:45:29,609 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:45:29,610 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 10:45:29,610 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:45:29,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 10:45:29,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:45:29,610 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:45:29,610 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 10:45:29,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:45:29,611 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:45:29,611 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 10:45:29,612 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 10:45:29,612 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_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 -> 36155f521cfe170e9c03fd915618e68821fe0430 [2018-11-18 10:45:29,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:45:29,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:45:29,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:45:29,650 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:45:29,651 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:45:29,651 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 10:45:29,690 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/data/35fc6e2cc/4b776e6c4d244318a8bc0e198a733e7d/FLAGab7f188a0 [2018-11-18 10:45:30,024 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:45:30,025 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 10:45:30,029 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/data/35fc6e2cc/4b776e6c4d244318a8bc0e198a733e7d/FLAGab7f188a0 [2018-11-18 10:45:30,456 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/data/35fc6e2cc/4b776e6c4d244318a8bc0e198a733e7d [2018-11-18 10:45:30,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:45:30,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:45:30,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:45:30,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:45:30,463 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:45:30,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f85b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30, skipping insertion in model container [2018-11-18 10:45:30,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:45:30,489 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:45:30,583 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:45:30,585 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:45:30,594 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:45:30,602 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:45:30,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30 WrapperNode [2018-11-18 10:45:30,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:45:30,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:45:30,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:45:30,603 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:45:30,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:45:30,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:45:30,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:45:30,623 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:45:30,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... [2018-11-18 10:45:30,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:45:30,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:45:30,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:45:30,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:45:30,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:45:30,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:45:30,820 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:45:30,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:45:30 BoogieIcfgContainer [2018-11-18 10:45:30,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:45:30,821 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 10:45:30,821 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 10:45:30,824 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 10:45:30,824 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:45:30,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 10:45:30" (1/3) ... [2018-11-18 10:45:30,825 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f1a5a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 10:45:30, skipping insertion in model container [2018-11-18 10:45:30,825 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:45:30,825 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:30" (2/3) ... [2018-11-18 10:45:30,826 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f1a5a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 10:45:30, skipping insertion in model container [2018-11-18 10:45:30,826 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 10:45:30,826 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:45:30" (3/3) ... [2018-11-18 10:45:30,827 INFO L375 chiAutomizerObserver]: Analyzing ICFG Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 10:45:30,874 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:45:30,874 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 10:45:30,875 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 10:45:30,875 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 10:45:30,875 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:45:30,875 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:45:30,875 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 10:45:30,875 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:45:30,875 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 10:45:30,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-18 10:45:30,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:30,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:30,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:30,913 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 10:45:30,913 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:45:30,913 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 10:45:30,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-18 10:45:30,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:30,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:30,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:30,915 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 10:45:30,915 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:45:30,921 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L26-2true [2018-11-18 10:45:30,922 INFO L796 eck$LassoCheckResult]: Loop: 10#L26-2true assume true; 6#L22-1true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 8#L23true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L26-2true [2018-11-18 10:45:30,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:30,927 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 10:45:30,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:30,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:30,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:30,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:30,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,003 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 1 times [2018-11-18 10:45:31,003 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:31,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:31,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:31,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,017 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-18 10:45:31,017 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:31,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:31,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:31,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,077 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:31,078 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:31,078 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:31,078 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:31,078 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:45:31,078 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:31,078 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:31,078 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:31,078 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-18 10:45:31,079 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:31,079 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:31,096 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 10:45:31,108 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 10:45:31,110 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 10:45:31,195 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:31,196 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,199 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:31,200 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:31,223 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:31,223 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_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,229 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:31,230 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:31,248 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:31,249 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_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,253 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:31,253 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,272 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:45:31,272 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:31,293 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:45:31,293 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:31,294 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:31,294 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:31,294 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:31,294 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:45:31,294 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:31,294 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:31,294 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:31,294 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-18 10:45:31,294 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:31,294 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:31,295 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 10:45:31,297 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 10:45:31,299 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 10:45:31,353 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:31,356 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:45:31,357 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 10:45:31,358 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:31,358 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:31,358 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:31,359 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:31,362 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:45:31,362 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:45:31,368 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:45:31,368 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 10:45:31,369 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:31,369 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:31,369 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:31,369 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:31,371 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:45:31,371 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:45:31,378 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:45:31,378 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 10:45:31,378 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:31,379 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:45:31,379 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:31,379 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:31,379 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:31,380 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:45:31,380 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:45:31,388 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:45:31,394 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:45:31,394 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:45:31,396 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:45:31,396 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:45:31,396 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:45:31,396 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-18 10:45:31,397 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:45:31,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:31,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:31,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:31,444 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 10:45:31,453 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 10:45:31,454 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2018-11-18 10:45:31,494 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 42 states and 51 transitions. Complement of second has 8 states. [2018-11-18 10:45:31,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 10:45:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2018-11-18 10:45:31,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-18 10:45:31,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:31,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-18 10:45:31,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:31,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-18 10:45:31,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:31,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 51 transitions. [2018-11-18 10:45:31,502 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 10:45:31,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 18 states and 24 transitions. [2018-11-18 10:45:31,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 10:45:31,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-18 10:45:31,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-11-18 10:45:31,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:45:31,507 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-18 10:45:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-11-18 10:45:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-18 10:45:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 10:45:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-11-18 10:45:31,526 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-18 10:45:31,526 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-18 10:45:31,526 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 10:45:31,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2018-11-18 10:45:31,527 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 10:45:31,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:31,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:31,527 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 10:45:31,527 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 10:45:31,527 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 96#L26-2 assume true; 110#L22-1 [2018-11-18 10:45:31,527 INFO L796 eck$LassoCheckResult]: Loop: 110#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 106#L23 assume !(main_~q~0 < main_~p~0); 107#L26 assume !(main_~p~0 < main_~q~0); 109#L26-2 assume true; 110#L22-1 [2018-11-18 10:45:31,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,527 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-18 10:45:31,528 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:31,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:31,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:31,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1298038, now seen corresponding path program 1 times [2018-11-18 10:45:31,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:31,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:31,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:31,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:31,570 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 10:45:31,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:45:31,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 10:45:31,573 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 10:45:31,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:45:31,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:45:31,576 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-18 10:45:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:45:31,586 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-11-18 10:45:31,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 10:45:31,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2018-11-18 10:45:31,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:31,587 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 16 transitions. [2018-11-18 10:45:31,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 10:45:31,587 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 10:45:31,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2018-11-18 10:45:31,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:45:31,587 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-18 10:45:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2018-11-18 10:45:31,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-18 10:45:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 10:45:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2018-11-18 10:45:31,588 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-18 10:45:31,588 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-18 10:45:31,588 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 10:45:31,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2018-11-18 10:45:31,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:31,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:31,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:31,589 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 10:45:31,589 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 10:45:31,590 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 133#L26-2 assume true; 136#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 137#L23 assume !(main_~q~0 < main_~p~0); 134#L26 [2018-11-18 10:45:31,590 INFO L796 eck$LassoCheckResult]: Loop: 134#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 135#L26-2 assume true; 142#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 143#L23 assume !(main_~q~0 < main_~p~0); 134#L26 [2018-11-18 10:45:31,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,590 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-18 10:45:31,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:31,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:31,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:31,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1525496, now seen corresponding path program 1 times [2018-11-18 10:45:31,595 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:31,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:31,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:31,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,602 INFO L82 PathProgramCache]: Analyzing trace with hash 384046303, now seen corresponding path program 1 times [2018-11-18 10:45:31,602 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:31,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:31,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:31,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:31,639 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:31,639 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:31,639 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:31,639 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:31,639 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:45:31,640 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:31,640 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:31,640 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:31,640 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-18 10:45:31,640 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:31,640 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:31,641 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 10:45:31,643 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 10:45:31,645 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 10:45:31,723 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:31,723 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,736 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:31,737 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:31,753 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:31,753 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_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,757 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:31,758 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:31,774 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:31,774 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_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,777 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:31,777 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:31,796 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:45:31,796 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:31,847 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:45:31,849 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:31,849 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:31,849 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:31,849 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:31,849 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:45:31,849 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:31,849 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:31,849 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:31,849 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-18 10:45:31,850 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:31,850 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:31,851 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 10:45:31,857 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 10:45:31,861 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 10:45:31,915 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:31,916 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:45:31,916 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 10:45:31,917 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:31,917 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:31,917 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:31,917 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:31,918 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:45:31,918 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:45:31,921 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:45:31,921 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 10:45:31,922 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:31,922 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:31,922 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:31,922 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:31,923 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:45:31,923 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:45:31,927 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:45:31,927 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 10:45:31,928 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:31,928 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:45:31,928 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:31,928 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:31,928 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:31,929 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:45:31,929 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:45:31,933 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:45:31,938 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:45:31,938 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:45:31,938 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:45:31,938 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:45:31,938 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:45:31,939 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-11-18 10:45:31,939 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:45:31,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:31,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:31,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:31,990 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 10:45:31,990 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 10:45:31,990 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-18 10:45:32,012 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 22 states and 27 transitions. Complement of second has 7 states. [2018-11-18 10:45:32,013 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 10:45:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:32,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 10:45:32,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-18 10:45:32,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 10:45:32,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,014 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-18 10:45:32,014 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2018-11-18 10:45:32,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:32,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 22 transitions. [2018-11-18 10:45:32,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 10:45:32,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 10:45:32,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2018-11-18 10:45:32,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:45:32,016 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2018-11-18 10:45:32,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2018-11-18 10:45:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-18 10:45:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 10:45:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2018-11-18 10:45:32,018 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-18 10:45:32,018 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-18 10:45:32,018 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 10:45:32,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2018-11-18 10:45:32,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:32,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:32,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:32,019 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-18 10:45:32,019 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:45:32,020 INFO L794 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 218#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 219#L26-2 assume true; 224#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 225#L23 assume !(main_~q~0 < main_~p~0); 234#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 223#L26-2 assume true; 233#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 232#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 221#L26-2 [2018-11-18 10:45:32,020 INFO L796 eck$LassoCheckResult]: Loop: 221#L26-2 assume true; 231#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 229#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 221#L26-2 [2018-11-18 10:45:32,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,020 INFO L82 PathProgramCache]: Analyzing trace with hash 384046301, now seen corresponding path program 1 times [2018-11-18 10:45:32,020 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:32,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,028 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 2 times [2018-11-18 10:45:32,028 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:32,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,034 INFO L82 PathProgramCache]: Analyzing trace with hash -669517300, now seen corresponding path program 2 times [2018-11-18 10:45:32,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:32,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,072 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:32,072 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:32,072 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:32,072 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:32,072 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:45:32,073 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:32,073 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:32,073 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:32,073 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-18 10:45:32,073 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:32,073 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:32,074 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 10:45:32,076 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 10:45:32,077 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 10:45:32,117 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:32,117 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:32,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:32,119 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:32,134 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:32,134 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_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:32,137 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:32,137 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:32,152 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:32,152 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_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:32,155 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:32,155 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:32,175 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:45:32,175 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:32,193 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:45:32,195 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:32,195 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:32,195 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:32,195 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:32,195 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:45:32,195 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:32,195 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:32,195 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:32,195 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-18 10:45:32,195 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:32,195 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:32,196 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 10:45:32,199 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 10:45:32,202 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 10:45:32,244 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:32,244 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:45:32,245 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 10:45:32,245 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:32,245 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:32,245 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:32,246 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:32,247 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:45:32,247 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:45:32,250 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:45:32,250 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 10:45:32,251 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:32,251 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:32,251 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:32,251 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:32,252 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:45:32,252 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:45:32,254 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:45:32,254 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 10:45:32,255 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:32,255 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:45:32,255 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:32,255 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:32,255 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:32,256 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:45:32,256 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:45:32,259 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:45:32,262 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:45:32,262 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:45:32,262 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:45:32,263 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:45:32,263 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:45:32,263 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-18 10:45:32,263 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:45:32,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,291 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 10:45:32,291 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 10:45:32,291 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-18 10:45:32,303 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 39 states and 46 transitions. Complement of second has 7 states. [2018-11-18 10:45:32,303 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 10:45:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 10:45:32,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-18 10:45:32,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-18 10:45:32,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-18 10:45:32,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 46 transitions. [2018-11-18 10:45:32,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:32,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 33 states and 40 transitions. [2018-11-18 10:45:32,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-18 10:45:32,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-18 10:45:32,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 40 transitions. [2018-11-18 10:45:32,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:45:32,309 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-11-18 10:45:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 40 transitions. [2018-11-18 10:45:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-11-18 10:45:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 10:45:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-18 10:45:32,312 INFO L728 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-18 10:45:32,312 INFO L608 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-18 10:45:32,312 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 10:45:32,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 37 transitions. [2018-11-18 10:45:32,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 10:45:32,313 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:32,313 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:32,313 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1] [2018-11-18 10:45:32,313 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 10:45:32,314 INFO L794 eck$LassoCheckResult]: Stem: 344#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 334#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 335#L26-2 assume true; 355#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 363#L23 assume !(main_~q~0 < main_~p~0); 362#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 361#L26-2 assume true; 360#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 358#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 357#L26-2 assume true; 349#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 345#L23 assume !(main_~q~0 < main_~p~0); 336#L26 [2018-11-18 10:45:32,314 INFO L796 eck$LassoCheckResult]: Loop: 336#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 337#L26-2 assume true; 340#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 341#L23 assume !(main_~q~0 < main_~p~0); 336#L26 [2018-11-18 10:45:32,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,315 INFO L82 PathProgramCache]: Analyzing trace with hash -669517298, now seen corresponding path program 3 times [2018-11-18 10:45:32,315 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,317 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:32,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1525496, now seen corresponding path program 2 times [2018-11-18 10:45:32,327 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:32,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1202097531, now seen corresponding path program 4 times [2018-11-18 10:45:32,334 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:32,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,386 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:32,386 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:32,386 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:32,386 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:32,386 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:45:32,386 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:32,386 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:32,386 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:32,386 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-18 10:45:32,387 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:32,387 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:32,387 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 10:45:32,395 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 10:45:32,396 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 10:45:32,435 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:32,435 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:32,438 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:32,438 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:32,455 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:45:32,455 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:32,503 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:45:32,505 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:32,505 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:32,505 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:32,505 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:32,505 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:45:32,505 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:32,505 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:32,505 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:32,505 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-18 10:45:32,506 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:32,506 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:32,507 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 10:45:32,513 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 10:45:32,515 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 10:45:32,554 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:32,554 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:45:32,555 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 10:45:32,555 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:32,555 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:45:32,555 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:32,556 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:32,556 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:32,556 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:45:32,556 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:45:32,559 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:45:32,562 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:45:32,562 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:45:32,562 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:45:32,562 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:45:32,563 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:45:32,563 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-11-18 10:45:32,563 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:45:32,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,605 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 10:45:32,605 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 10:45:32,605 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-18 10:45:32,618 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 39 states and 48 transitions. Complement of second has 7 states. [2018-11-18 10:45:32,618 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 10:45:32,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 10:45:32,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-18 10:45:32,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,619 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:45:32,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,642 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 10:45:32,642 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 10:45:32,642 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-18 10:45:32,664 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 36 states and 45 transitions. Complement of second has 7 states. [2018-11-18 10:45:32,664 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 10:45:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:32,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-18 10:45:32,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-18 10:45:32,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,665 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:45:32,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:32,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:32,691 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 10:45:32,692 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 3 loop predicates [2018-11-18 10:45:32,692 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-18 10:45:32,709 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 37 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 47 states and 58 transitions. Complement of second has 6 states. [2018-11-18 10:45:32,709 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 10:45:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 10:45:32,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-18 10:45:32,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 16 letters. Loop has 4 letters. [2018-11-18 10:45:32,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 8 letters. [2018-11-18 10:45:32,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:32,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 58 transitions. [2018-11-18 10:45:32,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 10:45:32,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 35 states and 43 transitions. [2018-11-18 10:45:32,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-18 10:45:32,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-18 10:45:32,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 43 transitions. [2018-11-18 10:45:32,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:45:32,728 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 43 transitions. [2018-11-18 10:45:32,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 43 transitions. [2018-11-18 10:45:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2018-11-18 10:45:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 10:45:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-18 10:45:32,731 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-18 10:45:32,731 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-18 10:45:32,731 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 10:45:32,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2018-11-18 10:45:32,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-18 10:45:32,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:32,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:32,733 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-18 10:45:32,733 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1] [2018-11-18 10:45:32,733 INFO L794 eck$LassoCheckResult]: Stem: 683#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 674#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 675#L26-2 assume true; 681#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 682#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 685#L26-2 assume true; 679#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 680#L23 assume !(main_~q~0 < main_~p~0); 684#L26 [2018-11-18 10:45:32,733 INFO L796 eck$LassoCheckResult]: Loop: 684#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 693#L26-2 assume true; 692#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 687#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 689#L26-2 assume true; 691#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 690#L23 assume !(main_~q~0 < main_~p~0); 684#L26 [2018-11-18 10:45:32,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,734 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-11-18 10:45:32,734 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:32,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1798642347, now seen corresponding path program 1 times [2018-11-18 10:45:32,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:32,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:32,749 INFO L82 PathProgramCache]: Analyzing trace with hash 300244977, now seen corresponding path program 5 times [2018-11-18 10:45:32,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:32,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:32,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:45:32,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:32,797 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:32,798 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:32,798 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:32,798 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:32,798 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:45:32,798 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:32,798 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:32,798 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:32,798 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-18 10:45:32,798 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:32,798 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:32,799 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 10:45:32,808 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 10:45:32,809 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 10:45:32,857 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:32,857 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:32,859 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:32,859 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:32,881 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:45:32,881 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:33,042 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:45:33,043 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:33,044 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:33,044 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:33,044 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:33,044 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:45:33,044 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:33,044 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:33,044 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:33,044 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-18 10:45:33,044 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:33,044 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:33,045 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 10:45:33,056 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 10:45:33,058 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 10:45:33,104 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:33,104 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:45:33,105 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 10:45:33,105 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:33,105 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:45:33,105 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:33,105 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:33,105 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:33,106 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:45:33,106 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:45:33,109 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:45:33,113 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:45:33,113 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:45:33,113 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:45:33,113 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:45:33,113 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:45:33,113 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-18 10:45:33,114 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:45:33,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:45:33,153 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-18 10:45:33,153 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 5 states. [2018-11-18 10:45:33,183 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand 5 states. Result 64 states and 81 transitions. Complement of second has 8 states. [2018-11-18 10:45:33,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-18 10:45:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 10:45:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-18 10:45:33,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 8 letters. Loop has 7 letters. [2018-11-18 10:45:33,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 15 letters. Loop has 7 letters. [2018-11-18 10:45:33,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,184 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 8 letters. Loop has 14 letters. [2018-11-18 10:45:33,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,184 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 81 transitions. [2018-11-18 10:45:33,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:45:33,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 41 states and 50 transitions. [2018-11-18 10:45:33,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-18 10:45:33,186 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 10:45:33,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 50 transitions. [2018-11-18 10:45:33,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 10:45:33,186 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-18 10:45:33,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 50 transitions. [2018-11-18 10:45:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2018-11-18 10:45:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 10:45:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2018-11-18 10:45:33,189 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-11-18 10:45:33,189 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2018-11-18 10:45:33,189 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 10:45:33,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 42 transitions. [2018-11-18 10:45:33,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-18 10:45:33,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 10:45:33,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 10:45:33,190 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1, 1, 1] [2018-11-18 10:45:33,190 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-18 10:45:33,190 INFO L794 eck$LassoCheckResult]: Stem: 843#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 834#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 835#L26-2 assume true; 847#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 864#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 862#L26-2 assume true; 861#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 851#L23 assume !(main_~q~0 < main_~p~0); 852#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 860#L26-2 assume true; 859#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 858#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 857#L26-2 assume true; 856#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 854#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 844#L26-2 [2018-11-18 10:45:33,190 INFO L796 eck$LassoCheckResult]: Loop: 844#L26-2 assume true; 839#L22-1 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 840#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 844#L26-2 [2018-11-18 10:45:33,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:33,190 INFO L82 PathProgramCache]: Analyzing trace with hash 300244975, now seen corresponding path program 6 times [2018-11-18 10:45:33,191 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:33,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:33,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:33,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:33,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:33,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:33,200 INFO L82 PathProgramCache]: Analyzing trace with hash 35944, now seen corresponding path program 3 times [2018-11-18 10:45:33,200 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:33,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:33,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:33,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:33,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:33,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:33,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1818821190, now seen corresponding path program 7 times [2018-11-18 10:45:33,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:45:33,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:45:33,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:33,205 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:45:33,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:45:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:45:33,244 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:33,245 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:33,245 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:33,245 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:33,245 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 10:45:33,245 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:33,245 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:33,245 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:33,245 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-18 10:45:33,245 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:33,245 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:33,246 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 10:45:33,248 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 10:45:33,249 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 10:45:33,276 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:33,276 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:33,278 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:33,278 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:33,300 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:33,300 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:33,303 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:33,303 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:33,319 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 10:45:33,319 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:33,325 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 10:45:33,325 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a45770f4-8d52-42b6-85e9-f43b321c4a11/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 10:45:33,361 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 10:45:33,361 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 10:45:33,383 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 10:45:33,385 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 10:45:33,385 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 10:45:33,385 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 10:45:33,385 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 10:45:33,385 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 10:45:33,385 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 10:45:33,385 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 10:45:33,385 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 10:45:33,385 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-18 10:45:33,385 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 10:45:33,386 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 10:45:33,386 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 10:45:33,390 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 10:45:33,396 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 10:45:33,432 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 10:45:33,432 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 10:45:33,433 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 10:45:33,433 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:33,433 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:33,433 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:33,434 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:33,434 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 10:45:33,434 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 10:45:33,437 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 10:45:33,437 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 10:45:33,437 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 10:45:33,437 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 10:45:33,438 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 10:45:33,438 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 10:45:33,438 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 10:45:33,438 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 10:45:33,438 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 10:45:33,440 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 10:45:33,442 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 10:45:33,442 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 10:45:33,442 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 10:45:33,442 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 10:45:33,442 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 10:45:33,442 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-11-18 10:45:33,443 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 10:45:33,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,474 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 10:45:33,474 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 10:45:33,474 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-18 10:45:33,484 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 47 states and 55 transitions. Complement of second has 7 states. [2018-11-18 10:45:33,486 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 10:45:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 10:45:33,486 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-18 10:45:33,486 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,487 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:45:33,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,523 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 10:45:33,523 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:45:33,523 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-18 10:45:33,535 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 47 states and 55 transitions. Complement of second has 7 states. [2018-11-18 10:45:33,536 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 10:45:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 10:45:33,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-18 10:45:33,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,536 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 10:45:33,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:45:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:45:33,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:45:33,558 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 10:45:33,558 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 10:45:33,558 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13 Second operand 4 states. [2018-11-18 10:45:33,566 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 42 transitions. cyclomatic complexity: 13. Second operand 4 states. Result 54 states and 65 transitions. Complement of second has 6 states. [2018-11-18 10:45:33,567 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 10:45:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 10:45:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-18 10:45:33,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-18 10:45:33,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-18 10:45:33,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 15 letters. Loop has 6 letters. [2018-11-18 10:45:33,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 10:45:33,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 65 transitions. [2018-11-18 10:45:33,569 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 10:45:33,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 0 states and 0 transitions. [2018-11-18 10:45:33,569 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 10:45:33,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 10:45:33,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 10:45:33,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 10:45:33,569 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:45:33,569 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:45:33,569 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:45:33,569 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 10:45:33,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:45:33,569 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 10:45:33,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 10:45:33,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 10:45:33 BoogieIcfgContainer [2018-11-18 10:45:33,575 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 10:45:33,576 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:45:33,576 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:45:33,576 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:45:33,576 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:45:30" (3/4) ... [2018-11-18 10:45:33,579 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:45:33,579 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:45:33,580 INFO L168 Benchmark]: Toolchain (without parser) took 3120.29 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.9 MB). Free memory was 959.7 MB in the beginning and 1.1 GB in the end (delta: -98.0 MB). Peak memory consumption was 125.9 MB. Max. memory is 11.5 GB. [2018-11-18 10:45:33,581 INFO L168 Benchmark]: CDTParser took 0.17 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 10:45:33,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.07 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:45:33,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.75 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:45:33,582 INFO L168 Benchmark]: Boogie Preprocessor took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:45:33,583 INFO L168 Benchmark]: RCFGBuilder took 185.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:45:33,583 INFO L168 Benchmark]: BuchiAutomizer took 2753.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 82.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.1 MB). Peak memory consumption was 150.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:45:33,584 INFO L168 Benchmark]: Witness Printer took 3.75 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:45:33,586 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 142.07 ms. Allocated memory is still 1.0 GB. Free memory was 959.7 MB in the beginning and 948.9 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 19.75 ms. Allocated memory is still 1.0 GB. Free memory was 948.9 MB in the beginning and 946.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.83 ms. Allocated memory is still 1.0 GB. Free memory is still 946.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 185.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -179.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2753.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 82.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 68.1 MB). Peak memory consumption was 150.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.75 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 4 locations. One deterministic module has affine ranking function q and consists of 5 locations. One nondeterministic module has affine ranking function p and consists of 4 locations. One nondeterministic module has affine ranking function q and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 8 iterations. TraceHistogramMax:4. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 34 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/3 HoareTripleCheckerStatistics: 83 SDtfs, 95 SDslu, 30 SDs, 0 SdLazy, 119 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf93 smp90 dnf100 smp100 tf107 neg98 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...