./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 687269bb6882b72a3d48999f1e5c55a1d5283a94 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 00:39:51,625 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 00:39:51,626 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 00:39:51,633 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 00:39:51,633 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 00:39:51,633 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 00:39:51,634 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 00:39:51,635 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 00:39:51,636 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 00:39:51,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 00:39:51,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 00:39:51,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 00:39:51,638 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 00:39:51,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 00:39:51,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 00:39:51,640 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 00:39:51,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 00:39:51,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 00:39:51,643 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 00:39:51,644 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 00:39:51,645 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 00:39:51,646 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 00:39:51,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 00:39:51,647 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 00:39:51,647 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 00:39:51,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 00:39:51,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 00:39:51,649 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 00:39:51,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 00:39:51,650 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 00:39:51,651 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 00:39:51,651 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 00:39:51,651 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 00:39:51,651 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 00:39:51,652 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 00:39:51,652 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 00:39:51,653 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 00:39:51,662 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 00:39:51,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 00:39:51,663 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 00:39:51,663 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 00:39:51,663 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 00:39:51,663 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 00:39:51,663 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 00:39:51,664 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 00:39:51,664 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 00:39:51,664 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 00:39:51,664 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 00:39:51,664 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 00:39:51,664 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 00:39:51,664 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 00:39:51,665 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 00:39:51,665 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 00:39:51,666 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 00:39:51,666 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 00:39:51,666 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 00:39:51,666 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 00:39:51,666 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 00:39:51,667 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 00:39:51,667 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_10325a09-72b4-48fc-b73a-871b68b22405/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 -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2018-11-23 00:39:51,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 00:39:51,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 00:39:51,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 00:39:51,701 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 00:39:51,701 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 00:39:51,702 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 00:39:51,738 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/data/6073f8bdb/b0239b2a856c4f5db2945ab65a0bcda7/FLAG1136413b0 [2018-11-23 00:39:52,150 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 00:39:52,150 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 00:39:52,154 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/data/6073f8bdb/b0239b2a856c4f5db2945ab65a0bcda7/FLAG1136413b0 [2018-11-23 00:39:52,163 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/data/6073f8bdb/b0239b2a856c4f5db2945ab65a0bcda7 [2018-11-23 00:39:52,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 00:39:52,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 00:39:52,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 00:39:52,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 00:39:52,171 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 00:39:52,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd21f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52, skipping insertion in model container [2018-11-23 00:39:52,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 00:39:52,197 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 00:39:52,315 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:39:52,317 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 00:39:52,327 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 00:39:52,337 INFO L195 MainTranslator]: Completed translation [2018-11-23 00:39:52,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52 WrapperNode [2018-11-23 00:39:52,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 00:39:52,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 00:39:52,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 00:39:52,338 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 00:39:52,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 00:39:52,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 00:39:52,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 00:39:52,356 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 00:39:52,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... [2018-11-23 00:39:52,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 00:39:52,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 00:39:52,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 00:39:52,367 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 00:39:52,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:52,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 00:39:52,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 00:39:52,522 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 00:39:52,522 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-23 00:39:52,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:52 BoogieIcfgContainer [2018-11-23 00:39:52,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 00:39:52,523 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 00:39:52,523 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 00:39:52,525 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 00:39:52,525 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 00:39:52,526 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 12:39:52" (1/3) ... [2018-11-23 00:39:52,526 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59d05e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:39:52, skipping insertion in model container [2018-11-23 00:39:52,526 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 00:39:52,526 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:52" (2/3) ... [2018-11-23 00:39:52,527 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59d05e65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:39:52, skipping insertion in model container [2018-11-23 00:39:52,527 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 00:39:52,527 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:52" (3/3) ... [2018-11-23 00:39:52,528 INFO L375 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 00:39:52,560 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 00:39:52,561 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 00:39:52,561 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 00:39:52,561 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 00:39:52,561 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 00:39:52,561 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 00:39:52,561 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 00:39:52,561 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 00:39:52,561 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 00:39:52,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-23 00:39:52,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 00:39:52,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:52,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:52,587 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 00:39:52,587 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:52,587 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 00:39:52,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-23 00:39:52,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 00:39:52,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:52,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:52,588 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 00:39:52,588 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:52,592 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2018-11-23 00:39:52,593 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 12#L25true assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 10#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L25-2true [2018-11-23 00:39:52,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 00:39:52,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:52,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:52,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:52,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:52,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:52,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:52,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2018-11-23 00:39:52,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:52,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:52,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:52,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:52,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:52,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2018-11-23 00:39:52,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:52,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:52,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:52,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:52,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:52,738 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:52,739 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:52,739 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:52,739 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:52,740 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:52,740 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:52,740 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:52,740 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:52,740 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-23 00:39:52,740 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:52,740 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:52,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:52,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:52,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:52,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:52,865 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:52,865 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:52,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:52,868 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:52,887 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:52,887 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_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:52,890 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:52,890 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:52,905 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:52,905 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_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:52,911 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:52,911 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:52,939 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:52,939 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:52,970 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:52,971 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:52,971 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:52,971 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:52,971 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:52,971 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:52,972 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:52,972 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:52,972 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:52,972 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-23 00:39:52,972 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:52,972 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:52,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:52,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:52,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:52,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,032 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:53,037 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:53,038 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 [2018-11-23 00:39:53,039 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:53,040 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:53,040 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:53,040 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:53,044 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:53,044 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:53,050 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:53,051 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 [2018-11-23 00:39:53,051 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:53,052 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:53,052 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:53,052 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:53,052 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:53,053 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:53,053 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:53,061 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:53,066 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:53,066 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:53,068 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:53,068 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:53,068 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:53,069 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:53,070 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:53,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:53,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:53,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:53,167 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 [2018-11-23 00:39:53,168 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-11-23 00:39:53,209 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 40 states and 55 transitions. Complement of second has 8 states. [2018-11-23 00:39:53,209 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 [2018-11-23 00:39:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-23 00:39:53,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 00:39:53,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:53,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-23 00:39:53,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:53,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2018-11-23 00:39:53,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:53,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2018-11-23 00:39:53,216 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-23 00:39:53,220 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2018-11-23 00:39:53,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-23 00:39:53,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-23 00:39:53,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2018-11-23 00:39:53,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:53,222 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-23 00:39:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2018-11-23 00:39:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2018-11-23 00:39:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 00:39:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2018-11-23 00:39:53,242 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2018-11-23 00:39:53,242 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2018-11-23 00:39:53,242 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 00:39:53,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2018-11-23 00:39:53,242 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-23 00:39:53,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:53,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:53,243 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 00:39:53,243 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:53,243 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2018-11-23 00:39:53,243 INFO L796 eck$LassoCheckResult]: Loop: 106#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 97#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 98#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 105#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2018-11-23 00:39:53,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-23 00:39:53,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:53,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:53,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:53,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2018-11-23 00:39:53,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:53,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:53,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:53,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2018-11-23 00:39:53,257 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:53,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:53,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:53,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,291 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:53,291 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:53,291 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:53,291 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:53,291 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:53,291 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:53,291 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:53,291 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:53,291 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-23 00:39:53,291 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:53,291 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:53,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,376 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:53,377 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,387 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:53,387 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:53,412 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:53,412 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_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,415 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:53,415 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:53,431 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:53,431 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_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,435 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:53,435 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,457 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:53,457 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:53,511 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:53,512 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:53,513 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:53,513 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:53,513 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:53,513 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:53,513 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:53,513 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:53,513 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:53,513 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-23 00:39:53,513 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:53,513 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:53,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,605 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:53,606 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:53,606 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 [2018-11-23 00:39:53,608 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:53,609 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:53,609 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:53,609 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:53,610 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:53,611 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:53,613 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:53,614 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 [2018-11-23 00:39:53,614 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:53,615 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:53,615 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:53,615 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:53,616 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:53,616 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:53,620 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:53,621 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 [2018-11-23 00:39:53,621 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:53,622 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:53,622 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:53,622 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:53,622 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:53,623 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:53,623 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:53,629 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:53,635 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:53,635 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:53,635 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:53,636 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:53,636 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:53,636 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:53,636 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:53,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:53,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:53,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:53,661 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 [2018-11-23 00:39:53,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2018-11-23 00:39:53,680 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2018-11-23 00:39:53,681 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 [2018-11-23 00:39:53,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:53,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-11-23 00:39:53,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-23 00:39:53,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:53,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 00:39:53,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:53,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-23 00:39:53,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:53,682 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2018-11-23 00:39:53,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 00:39:53,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2018-11-23 00:39:53,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-23 00:39:53,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-23 00:39:53,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2018-11-23 00:39:53,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:53,685 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-23 00:39:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2018-11-23 00:39:53,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-23 00:39:53,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-23 00:39:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-11-23 00:39:53,687 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-23 00:39:53,687 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-23 00:39:53,687 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 00:39:53,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2018-11-23 00:39:53,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 00:39:53,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:53,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:53,688 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 00:39:53,688 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:53,688 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2018-11-23 00:39:53,688 INFO L796 eck$LassoCheckResult]: Loop: 192#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 184#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 185#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 199#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2018-11-23 00:39:53,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,688 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2018-11-23 00:39:53,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:53,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:53,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:53,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2018-11-23 00:39:53,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:53,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:53,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:53,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2018-11-23 00:39:53,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:53,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:53,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:53,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:53,736 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:53,736 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:53,736 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:53,736 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:53,736 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:53,737 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:53,737 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:53,737 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:53,737 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-23 00:39:53,737 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:53,737 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:53,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,806 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:53,807 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,808 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:53,808 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:53,811 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:53,811 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,826 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:53,826 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:53,840 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:53,841 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_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,847 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:53,847 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:53,866 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:53,866 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_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:53,869 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:53,885 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:53,885 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:53,954 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:53,955 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:53,955 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:53,956 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:53,956 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:53,956 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:53,956 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:53,956 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:53,956 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:53,956 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-23 00:39:53,956 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:53,956 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:53,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:53,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,018 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:54,019 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:54,019 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 [2018-11-23 00:39:54,020 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,020 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:54,020 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,020 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,020 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,021 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:54,021 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:54,022 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,022 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 [2018-11-23 00:39:54,023 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,023 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,023 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,023 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,024 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:54,024 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:54,028 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,029 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 [2018-11-23 00:39:54,029 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,029 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,029 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,029 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,030 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:54,031 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:54,033 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,033 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 00:39:54,034 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,034 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:54,034 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,034 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,034 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,035 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:54,035 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:54,039 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:54,043 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:54,043 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:54,043 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:54,044 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:54,044 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:54,044 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 00:39:54,045 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:54,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:54,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:54,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:54,083 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 [2018-11-23 00:39:54,083 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-23 00:39:54,105 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 7 states. [2018-11-23 00:39:54,106 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 [2018-11-23 00:39:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-23 00:39:54,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-23 00:39:54,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-23 00:39:54,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2018-11-23 00:39:54,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2018-11-23 00:39:54,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 00:39:54,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2018-11-23 00:39:54,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-23 00:39:54,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-23 00:39:54,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2018-11-23 00:39:54,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:54,110 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2018-11-23 00:39:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2018-11-23 00:39:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-11-23 00:39:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-23 00:39:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2018-11-23 00:39:54,113 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-23 00:39:54,113 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-23 00:39:54,113 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 00:39:54,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2018-11-23 00:39:54,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 00:39:54,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:54,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:54,114 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-23 00:39:54,114 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:54,115 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2018-11-23 00:39:54,115 INFO L796 eck$LassoCheckResult]: Loop: 285#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 282#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 301#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2018-11-23 00:39:54,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2018-11-23 00:39:54,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:54,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2018-11-23 00:39:54,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:54,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,127 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2018-11-23 00:39:54,127 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:54,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,163 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:54,163 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:54,163 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:54,163 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:54,163 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:54,163 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,163 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:54,163 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:54,164 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-23 00:39:54,164 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:54,164 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:54,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,230 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:54,231 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:54,233 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,233 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,235 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,235 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:54,250 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,250 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,265 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,265 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:54,267 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,268 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,283 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,283 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:54,287 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,287 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:54,306 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:54,306 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,424 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:54,426 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:54,426 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:54,426 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:54,426 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:54,426 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:54,427 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,427 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:54,427 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:54,427 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-23 00:39:54,427 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:54,427 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:54,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,475 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:54,475 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:54,476 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 [2018-11-23 00:39:54,476 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,476 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:54,476 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,476 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 00:39:54,476 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,477 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 00:39:54,477 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:54,479 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,479 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 [2018-11-23 00:39:54,479 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,480 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,480 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,480 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,481 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:54,481 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:54,484 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,484 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 [2018-11-23 00:39:54,485 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,485 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,485 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,485 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,486 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:54,486 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:54,502 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,503 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 [2018-11-23 00:39:54,503 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,503 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:54,504 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,504 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,504 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,504 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:54,504 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:54,508 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:54,511 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:54,511 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:54,511 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:54,511 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:54,511 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:54,512 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:54,512 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:54,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:54,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:54,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:54,544 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 [2018-11-23 00:39:54,544 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-23 00:39:54,561 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 78 states and 116 transitions. Complement of second has 7 states. [2018-11-23 00:39:54,561 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 [2018-11-23 00:39:54,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-23 00:39:54,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-23 00:39:54,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-23 00:39:54,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,562 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-23 00:39:54,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2018-11-23 00:39:54,564 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-23 00:39:54,565 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2018-11-23 00:39:54,565 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-23 00:39:54,565 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-11-23 00:39:54,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2018-11-23 00:39:54,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:54,565 INFO L705 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2018-11-23 00:39:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2018-11-23 00:39:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2018-11-23 00:39:54,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-23 00:39:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2018-11-23 00:39:54,568 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2018-11-23 00:39:54,568 INFO L608 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2018-11-23 00:39:54,568 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 00:39:54,568 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2018-11-23 00:39:54,568 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-11-23 00:39:54,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:54,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:54,570 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:39:54,570 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:54,570 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2018-11-23 00:39:54,570 INFO L796 eck$LassoCheckResult]: Loop: 446#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 482#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 465#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 445#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2018-11-23 00:39:54,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,570 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2018-11-23 00:39:54,570 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:54,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2018-11-23 00:39:54,576 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:54,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2018-11-23 00:39:54,581 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:54,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,619 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:54,619 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:54,619 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:54,619 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:54,619 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:54,619 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,619 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:54,619 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:54,619 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-23 00:39:54,620 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:54,620 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:54,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,656 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:54,656 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:54,658 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,658 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,673 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,673 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/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 [2018-11-23 00:39:54,676 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,676 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,691 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,691 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,694 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,694 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,696 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,696 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,711 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,711 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,729 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:54,729 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,746 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:54,747 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:54,747 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:54,748 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:54,748 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:54,748 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:54,748 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,748 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:54,748 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:54,748 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-23 00:39:54,748 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:54,748 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:54,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,793 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:54,793 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:54,793 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 [2018-11-23 00:39:54,794 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,794 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,794 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,794 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,795 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:54,795 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:54,797 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,797 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 [2018-11-23 00:39:54,797 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,797 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:54,797 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,798 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 00:39:54,798 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,798 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 00:39:54,798 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:54,800 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,800 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 [2018-11-23 00:39:54,801 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,801 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,801 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,801 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,802 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:54,802 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:54,804 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:54,804 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 [2018-11-23 00:39:54,804 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:54,804 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:54,805 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:54,805 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:54,805 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:54,805 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:54,805 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:54,807 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:54,809 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:54,809 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:54,809 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:54,809 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:54,809 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:54,809 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:54,809 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:54,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:54,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:54,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:54,838 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 [2018-11-23 00:39:54,838 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2018-11-23 00:39:54,851 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 106 states and 158 transitions. Complement of second has 7 states. [2018-11-23 00:39:54,851 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 [2018-11-23 00:39:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-23 00:39:54,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-23 00:39:54,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2018-11-23 00:39:54,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2018-11-23 00:39:54,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:54,852 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2018-11-23 00:39:54,854 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-23 00:39:54,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2018-11-23 00:39:54,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2018-11-23 00:39:54,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2018-11-23 00:39:54,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2018-11-23 00:39:54,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:54,855 INFO L705 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2018-11-23 00:39:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2018-11-23 00:39:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2018-11-23 00:39:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-23 00:39:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2018-11-23 00:39:54,858 INFO L728 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2018-11-23 00:39:54,858 INFO L608 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2018-11-23 00:39:54,858 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 00:39:54,858 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2018-11-23 00:39:54,858 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-23 00:39:54,859 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:54,859 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:54,859 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:39:54,859 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:54,859 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2018-11-23 00:39:54,859 INFO L796 eck$LassoCheckResult]: Loop: 672#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 721#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 719#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 718#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2018-11-23 00:39:54,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,860 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2018-11-23 00:39:54,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:54,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2018-11-23 00:39:54,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:54,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:54,873 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2018-11-23 00:39:54,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:54,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:54,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:54,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:54,907 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:54,908 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:54,908 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:54,908 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:54,908 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:54,908 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,908 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:54,908 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:54,908 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-23 00:39:54,908 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:54,908 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:54,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:54,953 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:54,953 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,956 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,956 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,970 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,971 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_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,974 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,974 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:54,988 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:54,988 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_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:54,991 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:54,991 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,008 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:55,008 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:55,077 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:55,078 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:55,078 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:55,078 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:55,078 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:55,079 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:55,079 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,079 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:55,079 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:55,079 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-23 00:39:55,079 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:55,079 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:55,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,118 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:55,118 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:55,118 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 [2018-11-23 00:39:55,119 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:55,119 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:55,119 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:55,119 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:55,120 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:55,120 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:55,122 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:55,123 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 [2018-11-23 00:39:55,123 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:55,123 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:55,123 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:55,123 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:55,123 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:55,124 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:55,124 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:55,126 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:55,127 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:55,128 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:55,128 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:55,128 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:55,128 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:55,128 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 00:39:55,128 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:55,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:55,158 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 [2018-11-23 00:39:55,158 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-23 00:39:55,174 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 112 states and 173 transitions. Complement of second has 7 states. [2018-11-23 00:39:55,174 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 [2018-11-23 00:39:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-23 00:39:55,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-23 00:39:55,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,175 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:39:55,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:55,201 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 [2018-11-23 00:39:55,201 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-23 00:39:55,217 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 107 states and 160 transitions. Complement of second has 7 states. [2018-11-23 00:39:55,218 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 [2018-11-23 00:39:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 00:39:55,219 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-23 00:39:55,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,219 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:39:55,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:55,266 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 [2018-11-23 00:39:55,266 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-11-23 00:39:55,282 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 128 states and 203 transitions. Complement of second has 8 states. [2018-11-23 00:39:55,282 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 [2018-11-23 00:39:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-23 00:39:55,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-23 00:39:55,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-23 00:39:55,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-23 00:39:55,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2018-11-23 00:39:55,286 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2018-11-23 00:39:55,291 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2018-11-23 00:39:55,291 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-23 00:39:55,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-23 00:39:55,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2018-11-23 00:39:55,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:55,292 INFO L705 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2018-11-23 00:39:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2018-11-23 00:39:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2018-11-23 00:39:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-23 00:39:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2018-11-23 00:39:55,296 INFO L728 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2018-11-23 00:39:55,296 INFO L608 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2018-11-23 00:39:55,296 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-23 00:39:55,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2018-11-23 00:39:55,296 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2018-11-23 00:39:55,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:55,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:55,297 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-23 00:39:55,297 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:39:55,297 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2018-11-23 00:39:55,297 INFO L796 eck$LassoCheckResult]: Loop: 1261#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1252#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1253#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1265#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1254#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1255#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1266#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1316#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2018-11-23 00:39:55,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2018-11-23 00:39:55,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:55,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:55,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:55,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,303 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2018-11-23 00:39:55,303 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:55,303 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:55,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:55,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2018-11-23 00:39:55,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:55,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:55,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:55,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,346 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:55,346 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:55,346 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:55,346 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:55,346 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:55,346 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,346 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:55,346 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:55,346 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-23 00:39:55,346 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:55,346 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:55,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,396 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:55,396 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,398 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:55,398 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:55,417 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:55,513 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:55,514 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:55,514 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:55,514 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:55,514 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:55,514 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:55,514 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,514 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:55,514 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:55,514 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-23 00:39:55,514 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:55,514 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:55,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,556 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:55,556 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:55,557 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 [2018-11-23 00:39:55,557 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:55,557 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:55,557 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:55,557 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:55,557 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:55,558 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:55,558 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:55,561 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:55,563 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:55,563 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:55,564 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:55,564 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:55,564 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:55,564 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:55,564 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:55,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:55,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:55,618 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 [2018-11-23 00:39:55,618 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2018-11-23 00:39:55,659 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 246 states and 366 transitions. Complement of second has 13 states. [2018-11-23 00:39:55,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 00:39:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 00:39:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-23 00:39:55,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-23 00:39:55,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-23 00:39:55,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-23 00:39:55,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:55,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2018-11-23 00:39:55,663 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2018-11-23 00:39:55,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2018-11-23 00:39:55,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2018-11-23 00:39:55,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2018-11-23 00:39:55,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2018-11-23 00:39:55,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:55,665 INFO L705 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2018-11-23 00:39:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2018-11-23 00:39:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2018-11-23 00:39:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-11-23 00:39:55,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2018-11-23 00:39:55,677 INFO L728 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2018-11-23 00:39:55,677 INFO L608 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2018-11-23 00:39:55,677 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-23 00:39:55,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2018-11-23 00:39:55,679 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2018-11-23 00:39:55,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:55,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:55,682 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:39:55,683 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:39:55,683 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2018-11-23 00:39:55,683 INFO L796 eck$LassoCheckResult]: Loop: 1771#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1761#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1762#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1746#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1672#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1673#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1784#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1781#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2018-11-23 00:39:55,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,683 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2018-11-23 00:39:55,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:55,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:55,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:55,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2018-11-23 00:39:55,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:55,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:55,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:55,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:55,694 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2018-11-23 00:39:55,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:55,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:55,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:55,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:55,733 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:55,733 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:55,733 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:55,733 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:55,733 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:55,733 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,733 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:55,733 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:55,733 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-23 00:39:55,733 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:55,733 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:55,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,773 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:55,773 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,776 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:55,776 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:55,790 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:55,790 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,793 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:55,793 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:55,795 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:55,796 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,811 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:55,811 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:55,826 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:55,826 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,829 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:55,829 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,847 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:55,847 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:55,926 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:55,927 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:55,927 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:55,927 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:55,927 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:55,927 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:55,927 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:55,927 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:55,927 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:55,927 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-23 00:39:55,927 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:55,927 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:55,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:55,984 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:55,985 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:55,985 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 [2018-11-23 00:39:55,985 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:55,985 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:55,986 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:55,986 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:55,986 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:55,986 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:55,987 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:55,988 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 [2018-11-23 00:39:55,988 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:55,988 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:55,988 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:55,988 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 00:39:55,988 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:55,989 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 00:39:55,989 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:55,990 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:55,990 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 [2018-11-23 00:39:55,991 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:55,991 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:55,991 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:55,991 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:55,991 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:55,991 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:55,992 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:55,994 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:55,995 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:55,996 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:55,996 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:55,996 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:55,996 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:55,996 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:55,996 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:56,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:56,044 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 [2018-11-23 00:39:56,044 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-23 00:39:56,096 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 330 states and 503 transitions. Complement of second has 13 states. [2018-11-23 00:39:56,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 00:39:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 00:39:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-23 00:39:56,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-23 00:39:56,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,097 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:39:56,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:56,135 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-23 00:39:56,136 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-23 00:39:56,194 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 326 states and 483 transitions. Complement of second has 15 states. [2018-11-23 00:39:56,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2018-11-23 00:39:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 00:39:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2018-11-23 00:39:56,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-23 00:39:56,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,195 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:39:56,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:56,235 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 4 loop predicates [2018-11-23 00:39:56,236 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2018-11-23 00:39:56,293 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 525 states and 786 transitions. Complement of second has 23 states. [2018-11-23 00:39:56,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 00:39:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 00:39:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2018-11-23 00:39:56,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2018-11-23 00:39:56,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2018-11-23 00:39:56,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2018-11-23 00:39:56,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2018-11-23 00:39:56,300 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2018-11-23 00:39:56,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2018-11-23 00:39:56,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2018-11-23 00:39:56,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2018-11-23 00:39:56,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2018-11-23 00:39:56,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:56,303 INFO L705 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2018-11-23 00:39:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2018-11-23 00:39:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2018-11-23 00:39:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-11-23 00:39:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2018-11-23 00:39:56,312 INFO L728 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2018-11-23 00:39:56,312 INFO L608 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2018-11-23 00:39:56,312 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-23 00:39:56,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2018-11-23 00:39:56,313 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2018-11-23 00:39:56,313 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:56,313 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:56,314 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-23 00:39:56,314 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 00:39:56,314 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2018-11-23 00:39:56,314 INFO L796 eck$LassoCheckResult]: Loop: 3300#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3421#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3422#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3412#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3414#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3470#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3469#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3415#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2018-11-23 00:39:56,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2018-11-23 00:39:56,315 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:56,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:56,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,316 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:56,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2018-11-23 00:39:56,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:56,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:56,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:56,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2018-11-23 00:39:56,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:56,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:56,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:56,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,399 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:56,399 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:56,399 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:56,399 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:56,400 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:56,400 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,400 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:56,400 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:56,400 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-11-23 00:39:56,400 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:56,400 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:56,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,446 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:56,446 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,448 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:56,449 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:56,463 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:56,464 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:56,466 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:56,468 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 00:39:56,469 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,483 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:56,483 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,500 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:56,500 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:56,562 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:56,563 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:56,563 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:56,563 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:56,563 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:56,563 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:56,563 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,563 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:56,563 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:56,563 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-11-23 00:39:56,563 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:56,563 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:56,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,613 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:56,613 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:56,613 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 [2018-11-23 00:39:56,614 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:56,614 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:56,614 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:56,614 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:56,615 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:56,615 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:56,616 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:56,616 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 [2018-11-23 00:39:56,617 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:56,617 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:56,617 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:56,617 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 00:39:56,617 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:56,617 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 00:39:56,618 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:56,619 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:56,619 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 [2018-11-23 00:39:56,619 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:56,619 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:56,619 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:56,620 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:56,620 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:56,620 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:56,621 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:56,621 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 [2018-11-23 00:39:56,622 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:56,622 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:56,622 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:56,622 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:56,622 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:56,623 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:56,623 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:56,624 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:56,626 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:56,626 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:56,627 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:56,627 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:56,627 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:56,627 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:56,627 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:56,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:56,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:56,707 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 [2018-11-23 00:39:56,707 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2018-11-23 00:39:56,763 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133. Second operand 5 states. Result 490 states and 759 transitions. Complement of second has 12 states. [2018-11-23 00:39:56,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 00:39:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 00:39:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2018-11-23 00:39:56,764 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-23 00:39:56,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-23 00:39:56,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-23 00:39:56,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:56,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2018-11-23 00:39:56,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-23 00:39:56,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2018-11-23 00:39:56,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-11-23 00:39:56,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-23 00:39:56,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2018-11-23 00:39:56,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 00:39:56,770 INFO L705 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2018-11-23 00:39:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2018-11-23 00:39:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2018-11-23 00:39:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-11-23 00:39:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2018-11-23 00:39:56,777 INFO L728 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2018-11-23 00:39:56,777 INFO L608 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2018-11-23 00:39:56,777 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-23 00:39:56,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2018-11-23 00:39:56,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 00:39:56,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 00:39:56,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 00:39:56,778 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2018-11-23 00:39:56,778 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 00:39:56,778 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2018-11-23 00:39:56,779 INFO L796 eck$LassoCheckResult]: Loop: 4079#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4074#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4075#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4078#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2018-11-23 00:39:56,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,779 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2018-11-23 00:39:56,779 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:56,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:56,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:56,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2018-11-23 00:39:56,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:56,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:56,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 00:39:56,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2018-11-23 00:39:56,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 00:39:56,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 00:39:56,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 00:39:56,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 00:39:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 00:39:56,822 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:56,822 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:56,822 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:56,822 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:56,822 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 00:39:56,823 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,823 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:56,823 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:56,823 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-23 00:39:56,823 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:56,823 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:56,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,860 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:56,860 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 00:39:56,862 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10325a09-72b4-48fc-b73a-871b68b22405/bin-2019/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,879 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 00:39:56,879 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 00:39:56,948 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 00:39:56,949 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 00:39:56,949 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 00:39:56,949 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 00:39:56,949 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 00:39:56,949 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 00:39:56,949 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 00:39:56,950 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 00:39:56,950 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 00:39:56,950 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-23 00:39:56,950 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 00:39:56,950 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 00:39:56,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 00:39:56,992 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 00:39:56,992 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 00:39:56,992 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 [2018-11-23 00:39:56,992 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:56,993 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:56,993 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:56,993 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:56,993 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 00:39:56,993 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 00:39:56,994 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 00:39:56,994 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 [2018-11-23 00:39:56,995 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 00:39:56,995 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 00:39:56,995 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 00:39:56,995 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 00:39:56,995 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 00:39:56,996 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 00:39:56,996 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 00:39:56,997 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 00:39:56,999 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 00:39:56,999 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 00:39:56,999 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 00:39:56,999 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 00:39:56,999 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 00:39:57,000 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 00:39:57,000 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 00:39:57,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:57,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:57,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:57,026 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 [2018-11-23 00:39:57,026 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-23 00:39:57,041 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 302 states and 452 transitions. Complement of second has 7 states. [2018-11-23 00:39:57,041 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 [2018-11-23 00:39:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:57,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-23 00:39:57,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-23 00:39:57,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:57,042 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:39:57,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:57,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:57,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:57,070 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 [2018-11-23 00:39:57,070 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-23 00:39:57,090 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 313 states and 443 transitions. Complement of second has 7 states. [2018-11-23 00:39:57,091 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 [2018-11-23 00:39:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 00:39:57,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-23 00:39:57,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:57,092 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 00:39:57,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 00:39:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:57,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 00:39:57,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 00:39:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 00:39:57,123 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 [2018-11-23 00:39:57,123 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2018-11-23 00:39:57,137 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 423 states and 703 transitions. Complement of second has 8 states. [2018-11-23 00:39:57,138 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 [2018-11-23 00:39:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 00:39:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-23 00:39:57,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2018-11-23 00:39:57,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:57,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2018-11-23 00:39:57,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:57,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-23 00:39:57,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 00:39:57,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2018-11-23 00:39:57,142 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 00:39:57,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2018-11-23 00:39:57,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 00:39:57,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 00:39:57,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 00:39:57,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 00:39:57,143 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:39:57,143 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:39:57,143 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 00:39:57,143 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-23 00:39:57,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 00:39:57,143 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 00:39:57,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 00:39:57,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 12:39:57 BoogieIcfgContainer [2018-11-23 00:39:57,149 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 00:39:57,149 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 00:39:57,149 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 00:39:57,150 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 00:39:57,150 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:52" (3/4) ... [2018-11-23 00:39:57,153 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 00:39:57,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 00:39:57,154 INFO L168 Benchmark]: Toolchain (without parser) took 4987.80 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 324.0 MB). Free memory was 958.1 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 153.5 MB. Max. memory is 11.5 GB. [2018-11-23 00:39:57,155 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-11-23 00:39:57,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.94 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 00:39:57,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.71 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 00:39:57,156 INFO L168 Benchmark]: Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:39:57,156 INFO L168 Benchmark]: RCFGBuilder took 155.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 00:39:57,156 INFO L168 Benchmark]: BuchiAutomizer took 4626.13 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 164.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.4 MB). Peak memory consumption was 179.5 MB. Max. memory is 11.5 GB. [2018-11-23 00:39:57,157 INFO L168 Benchmark]: Witness Printer took 3.80 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 00:39:57,159 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 169.94 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 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 17.71 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -199.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4626.13 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 164.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.4 MB). Peak memory consumption was 179.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.80 ms. Allocated memory is still 1.4 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 10 terminating modules (0 trivial, 7 deterministic, 3 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 7 locations. One deterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 3.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 316 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 205 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 191 SDtfs, 249 SDslu, 111 SDs, 0 SdLazy, 311 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax150 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp100 dnf100 smp100 tf107 neg100 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 20 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...