./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.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_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 b98f7fd40026cd249d1c292b5307435abc3c32a2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 06:42:07,621 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 06:42:07,622 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 06:42:07,630 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 06:42:07,630 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 06:42:07,630 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 06:42:07,631 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 06:42:07,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 06:42:07,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 06:42:07,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 06:42:07,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 06:42:07,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 06:42:07,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 06:42:07,638 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 06:42:07,638 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 06:42:07,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 06:42:07,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 06:42:07,641 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 06:42:07,642 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 06:42:07,644 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 06:42:07,644 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 06:42:07,645 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 06:42:07,647 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 06:42:07,647 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 06:42:07,647 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 06:42:07,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 06:42:07,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 06:42:07,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 06:42:07,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 06:42:07,651 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 06:42:07,651 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 06:42:07,651 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 06:42:07,652 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 06:42:07,652 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 06:42:07,652 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 06:42:07,653 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 06:42:07,653 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 06:42:07,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 06:42:07,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 06:42:07,666 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 06:42:07,666 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 06:42:07,666 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 06:42:07,666 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 06:42:07,666 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 06:42:07,667 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 06:42:07,667 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 06:42:07,667 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 06:42:07,667 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 06:42:07,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 06:42:07,667 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 06:42:07,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 06:42:07,669 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 06:42:07,670 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 06:42:07,670 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 06:42:07,670 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 06:42:07,670 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 06:42:07,670 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 06:42:07,670 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 06:42:07,671 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 06:42:07,671 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_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 -> b98f7fd40026cd249d1c292b5307435abc3c32a2 [2018-11-23 06:42:07,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 06:42:07,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 06:42:07,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 06:42:07,709 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 06:42:07,709 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 06:42:07,710 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-23 06:42:07,756 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/data/8ea5b6321/d826b05674ba45de890175abcbccdb77/FLAG9b5a01ba3 [2018-11-23 06:42:08,162 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 06:42:08,163 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-23 06:42:08,167 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/data/8ea5b6321/d826b05674ba45de890175abcbccdb77/FLAG9b5a01ba3 [2018-11-23 06:42:08,178 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/data/8ea5b6321/d826b05674ba45de890175abcbccdb77 [2018-11-23 06:42:08,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 06:42:08,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 06:42:08,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 06:42:08,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 06:42:08,184 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 06:42:08,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213ccf52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08, skipping insertion in model container [2018-11-23 06:42:08,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 06:42:08,205 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 06:42:08,316 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:42:08,319 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 06:42:08,328 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 06:42:08,337 INFO L195 MainTranslator]: Completed translation [2018-11-23 06:42:08,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08 WrapperNode [2018-11-23 06:42:08,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 06:42:08,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 06:42:08,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 06:42:08,338 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 06:42:08,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 06:42:08,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 06:42:08,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 06:42:08,359 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 06:42:08,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... [2018-11-23 06:42:08,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 06:42:08,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 06:42:08,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 06:42:08,371 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 06:42:08,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:08,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 06:42:08,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 06:42:08,523 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 06:42:08,523 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 06:42:08,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:42:08 BoogieIcfgContainer [2018-11-23 06:42:08,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 06:42:08,524 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 06:42:08,524 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 06:42:08,526 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 06:42:08,527 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 06:42:08,527 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 06:42:08" (1/3) ... [2018-11-23 06:42:08,528 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c3bff80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 06:42:08, skipping insertion in model container [2018-11-23 06:42:08,528 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 06:42:08,528 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:42:08" (2/3) ... [2018-11-23 06:42:08,528 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c3bff80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 06:42:08, skipping insertion in model container [2018-11-23 06:42:08,528 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 06:42:08,529 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:42:08" (3/3) ... [2018-11-23 06:42:08,530 INFO L375 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-23 06:42:08,576 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 06:42:08,577 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 06:42:08,577 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 06:42:08,577 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 06:42:08,577 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 06:42:08,577 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 06:42:08,577 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 06:42:08,578 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 06:42:08,578 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 06:42:08,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-23 06:42:08,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 06:42:08,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:42:08,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:42:08,603 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 06:42:08,603 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 06:42:08,603 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 06:42:08,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-23 06:42:08,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 06:42:08,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:42:08,604 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:42:08,605 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 06:42:08,605 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 06:42:08,611 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L20true assume main_~k~0 >= 1;main_~i~0 := 0; 11#L22-2true [2018-11-23 06:42:08,612 INFO L796 eck$LassoCheckResult]: Loop: 11#L22-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 5#L24-2true assume !(main_~j~0 <= main_~i~0); 3#L24-3true main_~i~0 := 1 + main_~i~0; 11#L22-2true [2018-11-23 06:42:08,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:08,616 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-23 06:42:08,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:08,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:08,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:08,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:08,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:08,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2018-11-23 06:42:08,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:08,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:08,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:08,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:08,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:08,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:08,693 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2018-11-23 06:42:08,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:08,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:08,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:08,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:08,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:08,736 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 06:42:08,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 06:42:08,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 06:42:08,777 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:08,777 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:08,777 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:08,777 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:08,778 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 06:42:08,778 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:08,778 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:08,778 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:08,778 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 06:42:08,778 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:08,778 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:08,797 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 06:42:08,803 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 06:42:08,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 06:42:08,888 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:08,888 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:08,895 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:08,895 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:08,913 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:42:08,913 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_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:08,915 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:08,915 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:08,930 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:42:08,930 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_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:08,933 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:08,933 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:08,951 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 06:42:08,951 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:09,041 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 06:42:09,042 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:09,042 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:09,042 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:09,043 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:09,043 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 06:42:09,043 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:09,043 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:09,043 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:09,043 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 06:42:09,043 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:09,043 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:09,044 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 06:42:09,055 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 06:42:09,057 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 06:42:09,120 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:09,124 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 06:42:09,125 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 06:42:09,125 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:09,126 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:09,126 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:09,126 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:09,129 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:42:09,129 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:42:09,134 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:09,135 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 06:42:09,135 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:09,135 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:09,135 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:09,135 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:09,137 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:42:09,137 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:42:09,144 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:09,144 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 06:42:09,144 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:09,145 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:09,145 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:09,145 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:09,145 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:09,146 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:09,146 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:09,153 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 06:42:09,160 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 06:42:09,161 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 06:42:09,162 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 06:42:09,162 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 06:42:09,162 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 06:42:09,163 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-23 06:42:09,163 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 06:42:09,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:09,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:09,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:09,243 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 06:42:09,253 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 06:42:09,254 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-11-23 06:42:09,303 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 9 states. [2018-11-23 06:42:09,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 06:42:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 06:42:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 33 transitions. [2018-11-23 06:42:09,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-23 06:42:09,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:09,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 06:42:09,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:09,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-23 06:42:09,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:09,308 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2018-11-23 06:42:09,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 06:42:09,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 14 states and 19 transitions. [2018-11-23 06:42:09,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 06:42:09,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 06:42:09,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2018-11-23 06:42:09,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 06:42:09,313 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-11-23 06:42:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2018-11-23 06:42:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-23 06:42:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-23 06:42:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2018-11-23 06:42:09,331 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2018-11-23 06:42:09,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 06:42:09,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 06:42:09,334 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand 4 states. [2018-11-23 06:42:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:42:09,352 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2018-11-23 06:42:09,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 06:42:09,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2018-11-23 06:42:09,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 06:42:09,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-11-23 06:42:09,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 06:42:09,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 06:42:09,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-11-23 06:42:09,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 06:42:09,355 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-23 06:42:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-11-23 06:42:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-23 06:42:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 06:42:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-11-23 06:42:09,356 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-23 06:42:09,356 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-11-23 06:42:09,356 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 06:42:09,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-11-23 06:42:09,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 06:42:09,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:42:09,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:42:09,356 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 06:42:09,356 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 06:42:09,357 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 122#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 120#L22-2 [2018-11-23 06:42:09,357 INFO L796 eck$LassoCheckResult]: Loop: 120#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 123#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 124#L24-2 assume !(main_~j~0 <= main_~i~0); 119#L24-3 main_~i~0 := 1 + main_~i~0; 120#L22-2 [2018-11-23 06:42:09,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,357 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-11-23 06:42:09,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:09,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:09,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:09,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1332592, now seen corresponding path program 1 times [2018-11-23 06:42:09,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:09,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:09,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:42:09,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,368 INFO L82 PathProgramCache]: Analyzing trace with hash 920235987, now seen corresponding path program 1 times [2018-11-23 06:42:09,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:09,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:09,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:09,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,419 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:09,419 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:09,419 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:09,419 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:09,420 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 06:42:09,420 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:09,420 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:09,420 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:09,420 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 06:42:09,420 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:09,420 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:09,421 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 06:42:09,424 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 06:42:09,429 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 06:42:09,487 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:09,487 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:09,491 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:09,491 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:09,508 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:42:09,508 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_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:09,511 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:09,512 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:09,537 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:42:09,537 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_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:09,539 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:09,539 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:09,558 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 06:42:09,558 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:09,673 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 06:42:09,675 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:09,675 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:09,675 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:09,675 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:09,675 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 06:42:09,675 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:09,676 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:09,676 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:09,676 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 06:42:09,676 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:09,676 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:09,677 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 06:42:09,680 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 06:42:09,696 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 06:42:09,773 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:09,773 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 06:42:09,773 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 06:42:09,774 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:09,774 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:09,774 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:09,774 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:09,775 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:42:09,775 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:42:09,777 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:09,778 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 06:42:09,778 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:09,778 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:09,778 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:09,778 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:09,778 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:09,779 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:09,779 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:09,783 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 06:42:09,787 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 06:42:09,787 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 06:42:09,788 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 06:42:09,788 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 06:42:09,788 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 06:42:09,788 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~k~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-23 06:42:09,788 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 06:42:09,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:09,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:09,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:42:09,839 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 06:42:09,840 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-11-23 06:42:09,872 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 17 states and 22 transitions. Complement of second has 10 states. [2018-11-23 06:42:09,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2018-11-23 06:42:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 06:42:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2018-11-23 06:42:09,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-23 06:42:09,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:09,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 06:42:09,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:09,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-23 06:42:09,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:09,873 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-11-23 06:42:09,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 06:42:09,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 21 transitions. [2018-11-23 06:42:09,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 06:42:09,875 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-23 06:42:09,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2018-11-23 06:42:09,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 06:42:09,875 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2018-11-23 06:42:09,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2018-11-23 06:42:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-11-23 06:42:09,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 06:42:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2018-11-23 06:42:09,877 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2018-11-23 06:42:09,877 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2018-11-23 06:42:09,877 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 06:42:09,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2018-11-23 06:42:09,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 06:42:09,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:42:09,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:42:09,877 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 06:42:09,878 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2018-11-23 06:42:09,878 INFO L794 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 197#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 202#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 198#L24-2 [2018-11-23 06:42:09,878 INFO L796 eck$LassoCheckResult]: Loop: 198#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 199#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 203#L24-2 assume !(main_~j~0 <= main_~i~0); 192#L24-3 main_~i~0 := 1 + main_~i~0; 193#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 198#L24-2 [2018-11-23 06:42:09,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2018-11-23 06:42:09,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:09,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:09,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:09,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,883 INFO L82 PathProgramCache]: Analyzing trace with hash 49622054, now seen corresponding path program 2 times [2018-11-23 06:42:09,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:09,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:09,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:09,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:09,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:09,891 INFO L82 PathProgramCache]: Analyzing trace with hash -416424834, now seen corresponding path program 2 times [2018-11-23 06:42:09,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:09,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:09,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:42:09,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:42:09,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 06:42:09,925 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 06:42:09,931 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 06:42:09,936 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 06:42:09,936 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 06:42:09,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 06:42:09,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 06:42:09,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-23 06:42:10,014 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:10,014 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:10,014 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:10,014 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:10,014 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 06:42:10,014 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:10,014 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:10,014 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:10,014 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 06:42:10,015 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:10,015 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:10,016 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 06:42:10,019 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 06:42:10,027 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 06:42:10,056 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:10,056 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:10,063 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:10,064 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:10,088 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:42:10,088 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_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:10,090 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:10,090 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:10,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 06:42:10,107 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:10,313 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 06:42:10,314 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:10,314 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:10,314 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:10,314 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:10,314 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 06:42:10,314 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:10,315 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:10,315 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:10,315 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 06:42:10,315 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:10,315 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:10,316 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 06:42:10,317 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 06:42:10,324 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 06:42:10,350 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:10,350 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 06:42:10,351 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 06:42:10,351 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:10,351 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:10,351 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:10,351 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:10,352 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:42:10,352 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:42:10,355 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:10,355 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 06:42:10,355 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:10,355 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:10,356 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:10,356 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:10,356 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:10,356 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:10,356 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:10,361 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 06:42:10,365 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 06:42:10,365 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 06:42:10,366 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 06:42:10,366 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 06:42:10,366 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 06:42:10,366 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-23 06:42:10,369 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 06:42:10,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:10,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:10,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-23 06:42:10,398 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 06:42:10,398 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-23 06:42:10,411 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 26 states and 34 transitions. Complement of second has 6 states. [2018-11-23 06:42:10,411 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 06:42:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 06:42:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-23 06:42:10,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 5 letters. [2018-11-23 06:42:10,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:10,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 5 letters. [2018-11-23 06:42:10,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:10,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 10 letters. [2018-11-23 06:42:10,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:10,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 34 transitions. [2018-11-23 06:42:10,414 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 06:42:10,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 18 states and 25 transitions. [2018-11-23 06:42:10,415 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 06:42:10,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-23 06:42:10,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2018-11-23 06:42:10,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 06:42:10,415 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2018-11-23 06:42:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2018-11-23 06:42:10,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-23 06:42:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-23 06:42:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2018-11-23 06:42:10,417 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2018-11-23 06:42:10,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 06:42:10,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-23 06:42:10,418 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand 8 states. [2018-11-23 06:42:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 06:42:10,450 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2018-11-23 06:42:10,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 06:42:10,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2018-11-23 06:42:10,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 06:42:10,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 21 states and 28 transitions. [2018-11-23 06:42:10,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 06:42:10,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 06:42:10,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2018-11-23 06:42:10,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 06:42:10,452 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-11-23 06:42:10,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2018-11-23 06:42:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-23 06:42:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-23 06:42:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-11-23 06:42:10,454 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-11-23 06:42:10,454 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-11-23 06:42:10,454 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 06:42:10,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 25 transitions. [2018-11-23 06:42:10,455 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 06:42:10,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 06:42:10,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 06:42:10,455 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2018-11-23 06:42:10,455 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 06:42:10,456 INFO L794 eck$LassoCheckResult]: Stem: 352#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 353#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 357#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 358#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 355#L24-2 assume !(main_~j~0 <= main_~i~0); 356#L24-3 main_~i~0 := 1 + main_~i~0; 362#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 363#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 354#L24-2 [2018-11-23 06:42:10,456 INFO L796 eck$LassoCheckResult]: Loop: 354#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 354#L24-2 [2018-11-23 06:42:10,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:10,456 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 3 times [2018-11-23 06:42:10,456 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:10,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:10,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:10,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:42:10,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:10,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-11-23 06:42:10,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:10,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:10,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:10,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 06:42:10,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:10,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:10,468 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 4 times [2018-11-23 06:42:10,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 06:42:10,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 06:42:10,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:10,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 06:42:10,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 06:42:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 06:42:10,528 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:10,528 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:10,528 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:10,528 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:10,528 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 06:42:10,528 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:10,529 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:10,529 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:10,529 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-23 06:42:10,529 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:10,529 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:10,530 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 06:42:10,531 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 06:42:10,533 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 06:42:10,540 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 06:42:10,541 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 06:42:10,542 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 06:42:10,542 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 06:42:10,544 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 06:42:10,584 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:10,585 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:10,589 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:10,589 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:10,591 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:42:10,591 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:10,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:10,607 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:10,609 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 06:42:10,609 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:10,624 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 06:42:10,625 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f61239a-94e7-4f6d-8d65-2b53e36221ae/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 06:42:10,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 06:42:10,644 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 06:42:11,123 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 06:42:11,125 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 06:42:11,125 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 06:42:11,125 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 06:42:11,125 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 06:42:11,125 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 06:42:11,125 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 06:42:11,125 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 06:42:11,125 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 06:42:11,126 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-23 06:42:11,126 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 06:42:11,126 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 06:42:11,127 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 06:42:11,129 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 06:42:11,130 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 06:42:11,132 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 06:42:11,133 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 06:42:11,134 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 06:42:11,136 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 06:42:11,145 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 06:42:11,181 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 06:42:11,181 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 06:42:11,182 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 06:42:11,182 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:11,182 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:11,182 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:11,183 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:11,183 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:11,183 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:11,183 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:11,184 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:11,184 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 06:42:11,184 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:11,184 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:11,185 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:11,185 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:11,185 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:11,185 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:11,185 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:11,186 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:11,186 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 06:42:11,186 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:11,186 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:11,186 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:11,187 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:11,187 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:11,187 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:11,187 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:11,187 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:11,188 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 06:42:11,188 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:11,188 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:11,188 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:11,188 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:11,189 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:11,189 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:11,189 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:11,189 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:11,190 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 06:42:11,190 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:11,190 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 06:42:11,190 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:11,190 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:11,190 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:11,191 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 06:42:11,191 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 06:42:11,191 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:11,192 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 06:42:11,192 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:11,192 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:11,192 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:11,192 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:11,193 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:42:11,193 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:42:11,195 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 06:42:11,196 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 06:42:11,196 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 06:42:11,196 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 06:42:11,196 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 06:42:11,196 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 06:42:11,199 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 06:42:11,200 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 06:42:11,211 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 06:42:11,217 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 06:42:11,217 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 06:42:11,218 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 06:42:11,219 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-23 06:42:11,219 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 06:42:11,219 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2018-11-23 06:42:11,226 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 06:42:11,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:11,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:11,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:11,272 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 06:42:11,273 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-23 06:42:11,273 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-23 06:42:11,291 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 6 states. [2018-11-23 06:42:11,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 06:42:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:42:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-23 06:42:11,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-23 06:42:11,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:11,292 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 06:42:11,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:11,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:11,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:11,318 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 06:42:11,318 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-23 06:42:11,319 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-23 06:42:11,345 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 6 states. [2018-11-23 06:42:11,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 06:42:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:42:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-23 06:42:11,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-23 06:42:11,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:11,348 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 06:42:11,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 06:42:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:11,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 06:42:11,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 06:42:11,366 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 06:42:11,366 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-23 06:42:11,367 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-23 06:42:11,381 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 25 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 5 states. [2018-11-23 06:42:11,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 06:42:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 06:42:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-23 06:42:11,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2018-11-23 06:42:11,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:11,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-23 06:42:11,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:11,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-23 06:42:11,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 06:42:11,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-23 06:42:11,382 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 06:42:11,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2018-11-23 06:42:11,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 06:42:11,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 06:42:11,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 06:42:11,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 06:42:11,382 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 06:42:11,382 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 06:42:11,383 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 06:42:11,383 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 06:42:11,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 06:42:11,383 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 06:42:11,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 06:42:11,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 06:42:11 BoogieIcfgContainer [2018-11-23 06:42:11,387 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 06:42:11,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 06:42:11,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 06:42:11,387 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 06:42:11,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:42:08" (3/4) ... [2018-11-23 06:42:11,390 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 06:42:11,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 06:42:11,390 INFO L168 Benchmark]: Toolchain (without parser) took 3209.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 961.9 MB in the beginning and 1.0 GB in the end (delta: -80.3 MB). Peak memory consumption was 64.4 MB. Max. memory is 11.5 GB. [2018-11-23 06:42:11,392 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:42:11,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.24 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 06:42:11,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.61 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 06:42:11,393 INFO L168 Benchmark]: Boogie Preprocessor took 11.72 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:42:11,393 INFO L168 Benchmark]: RCFGBuilder took 152.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 06:42:11,393 INFO L168 Benchmark]: BuchiAutomizer took 2863.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 11.5 GB. [2018-11-23 06:42:11,394 INFO L168 Benchmark]: Witness Printer took 2.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 06:42:11,396 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.24 ms. Allocated memory is still 1.0 GB. Free memory was 961.9 MB in the beginning and 951.2 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 20.61 ms. Allocated memory is still 1.0 GB. Free memory was 951.2 MB in the beginning and 945.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.72 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 152.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2863.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.2 MB). Peak memory consumption was 88.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function k + -1 * i and consists of 6 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 19 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 3/4 HoareTripleCheckerStatistics: 29 SDtfs, 42 SDslu, 9 SDs, 0 SdLazy, 116 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax158 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf92 smp100 dnf100 smp100 tf105 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...