./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/AlternKonv_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-restricted-15/AlternKonv_false-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 475cf88887990488194ca7f61a6d05f74a450e7b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:17:07,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:17:07,571 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:17:07,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:17:07,584 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:17:07,586 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:17:07,587 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:17:07,589 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:17:07,591 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:17:07,592 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:17:07,592 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:17:07,593 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:17:07,594 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:17:07,595 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:17:07,596 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:17:07,597 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:17:07,598 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:17:07,599 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:17:07,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:17:07,603 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:17:07,604 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:17:07,606 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:17:07,608 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:17:07,609 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:17:07,609 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:17:07,610 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:17:07,611 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:17:07,612 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:17:07,613 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:17:07,614 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:17:07,614 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:17:07,615 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:17:07,615 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:17:07,616 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:17:07,617 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:17:07,618 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:17:07,618 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:17:07,636 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:17:07,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:17:07,638 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:17:07,638 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:17:07,638 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:17:07,643 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:17:07,643 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:17:07,643 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:17:07,644 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:17:07,645 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:17:07,645 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:17:07,645 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:17:07,645 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:17:07,645 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:17:07,646 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:17:07,646 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:17:07,646 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:17:07,646 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:17:07,646 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:17:07,646 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:17:07,647 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:17:07,649 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:17:07,650 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:17:07,650 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:17:07,650 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:17:07,650 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:17:07,650 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:17:07,651 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:17:07,652 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:17:07,654 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 475cf88887990488194ca7f61a6d05f74a450e7b [2018-11-28 23:17:07,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:17:07,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:17:07,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:17:07,732 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:17:07,732 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:17:07,733 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/AlternKonv_false-termination_true-no-overflow.c [2018-11-28 23:17:07,802 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a355a1da3/d2118ed5ddc640079925223a827a207b/FLAG537bdce65 [2018-11-28 23:17:08,293 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:17:08,294 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/AlternKonv_false-termination_true-no-overflow.c [2018-11-28 23:17:08,300 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a355a1da3/d2118ed5ddc640079925223a827a207b/FLAG537bdce65 [2018-11-28 23:17:08,651 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a355a1da3/d2118ed5ddc640079925223a827a207b [2018-11-28 23:17:08,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:17:08,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:17:08,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:17:08,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:17:08,665 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:17:08,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:08,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e5c430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08, skipping insertion in model container [2018-11-28 23:17:08,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:08,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:17:08,705 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:17:08,940 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:17:08,945 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:17:08,965 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:17:08,982 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:17:08,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08 WrapperNode [2018-11-28 23:17:08,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:17:08,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:17:08,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:17:08,984 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:17:08,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:17:09,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:17:09,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:17:09,024 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:17:09,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... [2018-11-28 23:17:09,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:17:09,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:17:09,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:17:09,055 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:17:09,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:17:09,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:17:09,507 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:17:09,507 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:17:09,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:09 BoogieIcfgContainer [2018-11-28 23:17:09,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:17:09,509 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:17:09,509 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:17:09,513 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:17:09,514 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:09,514 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:17:08" (1/3) ... [2018-11-28 23:17:09,515 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@355a9985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:17:09, skipping insertion in model container [2018-11-28 23:17:09,515 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:09,516 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:17:08" (2/3) ... [2018-11-28 23:17:09,516 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@355a9985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:17:09, skipping insertion in model container [2018-11-28 23:17:09,516 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:17:09,516 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:09" (3/3) ... [2018-11-28 23:17:09,518 INFO L375 chiAutomizerObserver]: Analyzing ICFG AlternKonv_false-termination_true-no-overflow.c [2018-11-28 23:17:09,581 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:17:09,581 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:17:09,582 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:17:09,582 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:17:09,582 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:17:09,582 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:17:09,582 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:17:09,582 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:17:09,582 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:17:09,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-28 23:17:09,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:17:09,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:09,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:09,630 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:17:09,631 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:09,631 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:17:09,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-28 23:17:09,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:17:09,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:09,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:09,633 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:17:09,633 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:09,643 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2018-11-28 23:17:09,643 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(0 != main_~i~0); 3#L10true assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 6#L12true assume !(main_~i~0 < 0); 5#L18-2true [2018-11-28 23:17:09,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:17:09,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:09,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:09,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:09,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:09,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:09,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:09,754 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 1 times [2018-11-28 23:17:09,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:09,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:09,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:09,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:09,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:09,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash 963348, now seen corresponding path program 1 times [2018-11-28 23:17:09,769 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:09,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:09,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:09,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:09,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:09,951 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-28 23:17:10,018 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:10,019 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:10,019 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:10,019 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:10,020 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:10,020 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:10,020 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:10,020 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:10,020 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:17:10,020 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:10,021 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:10,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:10,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:10,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:10,340 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:10,341 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:10,354 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:10,354 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:10,407 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:10,408 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:10,414 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:10,414 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:10,436 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:10,436 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:10,441 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:10,442 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:10,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:10,469 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:10,494 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:10,496 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:10,496 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:10,497 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:10,497 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:10,497 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:10,497 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:10,497 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:10,497 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:10,497 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:17:10,497 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:10,498 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:10,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:10,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:10,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:10,722 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:10,728 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:10,730 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 [2018-11-28 23:17:10,732 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:10,732 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:10,732 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:10,733 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:10,739 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:10,739 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:10,749 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:10,750 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 [2018-11-28 23:17:10,751 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:10,751 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:10,751 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:10,751 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:10,754 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:10,755 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:10,765 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:10,765 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 [2018-11-28 23:17:10,766 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:10,766 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:10,767 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:10,767 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:10,767 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:10,768 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:10,768 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:10,776 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:10,782 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:17:10,782 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:17:10,785 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:10,785 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:10,785 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:10,786 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:10,787 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:11,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:11,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:11,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:11,207 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 [2018-11-28 23:17:11,208 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2018-11-28 23:17:11,364 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 32 states and 45 transitions. Complement of second has 6 states. [2018-11-28 23:17:11,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:17:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2018-11-28 23:17:11,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 23:17:11,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:11,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:17:11,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:11,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 23:17:11,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:11,372 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2018-11-28 23:17:11,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:17:11,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 14 states and 20 transitions. [2018-11-28 23:17:11,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:17:11,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-28 23:17:11,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-11-28 23:17:11,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:11,384 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-11-28 23:17:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2018-11-28 23:17:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 23:17:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2018-11-28 23:17:11,411 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-28 23:17:11,411 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-11-28 23:17:11,412 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:17:11,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2018-11-28 23:17:11,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:17:11,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:11,413 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:11,413 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:17:11,413 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:11,414 INFO L794 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 86#L18-2 assume !!(0 != main_~i~0); 79#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2018-11-28 23:17:11,414 INFO L796 eck$LassoCheckResult]: Loop: 80#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 89#L18-2 assume !!(0 != main_~i~0); 90#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2018-11-28 23:17:11,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 1 times [2018-11-28 23:17:11,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:11,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash 57996, now seen corresponding path program 1 times [2018-11-28 23:17:11,426 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:11,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:11,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:17:11,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-11-28 23:17:11,476 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:17:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:17:11,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:17:11,481 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-28 23:17:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:17:11,600 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2018-11-28 23:17:11,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:17:11,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2018-11-28 23:17:11,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:17:11,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 20 transitions. [2018-11-28 23:17:11,605 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 23:17:11,605 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-28 23:17:11,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-11-28 23:17:11,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:11,605 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-11-28 23:17:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 23:17:11,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 23:17:11,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-28 23:17:11,608 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:11,608 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:11,608 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:17:11,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-28 23:17:11,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:17:11,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:11,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:11,610 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:17:11,610 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:11,610 INFO L794 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 116#L18-2 assume !!(0 != main_~i~0); 111#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2018-11-28 23:17:11,610 INFO L796 eck$LassoCheckResult]: Loop: 112#L18 assume !(main_~i~0 > 0); 122#L18-2 assume !!(0 != main_~i~0); 124#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2018-11-28 23:17:11,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 2 times [2018-11-28 23:17:11,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:11,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,627 INFO L82 PathProgramCache]: Analyzing trace with hash 59918, now seen corresponding path program 1 times [2018-11-28 23:17:11,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:11,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:11,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:11,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:17:11,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:17:11,673 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:17:11,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:17:11,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:17:11,674 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-28 23:17:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:17:11,705 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2018-11-28 23:17:11,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:17:11,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2018-11-28 23:17:11,708 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:17:11,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2018-11-28 23:17:11,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 23:17:11,709 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-28 23:17:11,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2018-11-28 23:17:11,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:11,710 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-11-28 23:17:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2018-11-28 23:17:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-11-28 23:17:11,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 23:17:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-28 23:17:11,712 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:11,712 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:17:11,712 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:17:11,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-28 23:17:11,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:17:11,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:11,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:11,714 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:17:11,714 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2018-11-28 23:17:11,714 INFO L794 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 153#L18-2 assume !!(0 != main_~i~0); 148#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2018-11-28 23:17:11,715 INFO L796 eck$LassoCheckResult]: Loop: 149#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 154#L18-2 assume !!(0 != main_~i~0); 155#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 157#L12 assume !(main_~i~0 < 0); 159#L18-2 assume !!(0 != main_~i~0); 161#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2018-11-28 23:17:11,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,715 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 3 times [2018-11-28 23:17:11,715 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:11,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1727393992, now seen corresponding path program 1 times [2018-11-28 23:17:11,726 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:11,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash 684415735, now seen corresponding path program 1 times [2018-11-28 23:17:11,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:11,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:11,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:11,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:11,858 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2018-11-28 23:17:11,873 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:11,873 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:11,873 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:11,874 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:11,874 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:11,874 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:11,874 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:11,875 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:11,875 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:17:11,875 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:11,875 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:11,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:11,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:11,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,084 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-11-28 23:17:12,389 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 23:17:12,391 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:12,392 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:12,406 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:12,406 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:12,462 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:12,462 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:17:12,471 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:12,471 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:12,492 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:12,492 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:12,498 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:12,498 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:12,526 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:12,527 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:12,536 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:12,553 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:12,554 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:12,554 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:12,554 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:12,554 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:12,554 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:12,554 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:12,554 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:12,555 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:17:12,555 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:12,555 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:12,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:12,684 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:12,684 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:12,684 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 [2018-11-28 23:17:12,685 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:12,686 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:12,686 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:12,686 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:12,688 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:12,688 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:12,692 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:12,693 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 [2018-11-28 23:17:12,693 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:12,694 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:12,694 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:12,694 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:12,694 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:12,695 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:12,695 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:12,699 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:12,702 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-28 23:17:12,702 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:17:12,703 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:12,703 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:12,703 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:12,703 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:12,704 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:12,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:12,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:12,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:12,805 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 [2018-11-28 23:17:12,805 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-28 23:17:12,834 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 5 states. [2018-11-28 23:17:12,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:17:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-28 23:17:12,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:17:12,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:12,838 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:17:12,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:12,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:12,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:12,930 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:17:12,931 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-28 23:17:13,044 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 43 states and 63 transitions. Complement of second has 9 states. [2018-11-28 23:17:13,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:13,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:17:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-28 23:17:13,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 23:17:13,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 23:17:13,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 12 letters. [2018-11-28 23:17:13,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 63 transitions. [2018-11-28 23:17:13,053 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2018-11-28 23:17:13,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 41 states and 60 transitions. [2018-11-28 23:17:13,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-28 23:17:13,054 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-28 23:17:13,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2018-11-28 23:17:13,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:13,055 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2018-11-28 23:17:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2018-11-28 23:17:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2018-11-28 23:17:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 23:17:13,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 55 transitions. [2018-11-28 23:17:13,066 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2018-11-28 23:17:13,066 INFO L608 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2018-11-28 23:17:13,066 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:17:13,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 55 transitions. [2018-11-28 23:17:13,068 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2018-11-28 23:17:13,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:13,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:13,072 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:17:13,072 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:17:13,072 INFO L794 eck$LassoCheckResult]: Stem: 323#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 324#L18-2 assume !!(0 != main_~i~0); 321#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 322#L12 assume main_~i~0 < 0; 328#L13 [2018-11-28 23:17:13,072 INFO L796 eck$LassoCheckResult]: Loop: 328#L13 assume !(main_~i~0 <= -2147483648);main_~i~0 := -1 * main_~i~0; 334#L18-2 assume !!(0 != main_~i~0); 354#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 352#L12 assume main_~i~0 < 0; 328#L13 [2018-11-28 23:17:13,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2018-11-28 23:17:13,073 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1559161, now seen corresponding path program 1 times [2018-11-28 23:17:13,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,096 INFO L82 PathProgramCache]: Analyzing trace with hash 608049029, now seen corresponding path program 1 times [2018-11-28 23:17:13,097 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:13,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:17:13,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:17:13,204 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:13,204 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:13,204 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:13,204 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:13,204 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:13,204 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,205 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:13,205 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:13,205 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:17:13,205 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:13,205 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:13,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,308 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:13,308 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,313 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:13,313 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:13,333 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:13,333 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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:13,337 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:13,338 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:13,359 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:17:13,359 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:13,364 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:13,364 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:13,390 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:13,390 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:13,461 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:13,463 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:13,464 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:13,464 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:13,464 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:13,464 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:13,464 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:13,464 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:13,464 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:13,464 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:17:13,465 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:13,465 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:13,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:13,604 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:13,604 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:13,605 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 [2018-11-28 23:17:13,606 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:13,606 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:13,606 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:13,606 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:13,608 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:13,608 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:13,621 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:13,623 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 [2018-11-28 23:17:13,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:13,624 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:13,624 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:13,624 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:13,626 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:17:13,626 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:17:13,633 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:17:13,634 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 [2018-11-28 23:17:13,634 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:13,634 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:13,637 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:13,637 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:13,637 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:13,638 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:13,638 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:13,644 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:13,652 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:17:13,654 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:17:13,655 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:13,655 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:13,655 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:13,655 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:13,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:13,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:13,687 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:13,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:13,733 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 [2018-11-28 23:17:13,733 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24 Second operand 4 states. [2018-11-28 23:17:13,881 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 147 states and 212 transitions. Complement of second has 11 states. [2018-11-28 23:17:13,883 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 [2018-11-28 23:17:13,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:17:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2018-11-28 23:17:13,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 23:17:13,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 23:17:13,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-28 23:17:13,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:13,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 147 states and 212 transitions. [2018-11-28 23:17:13,891 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 23 [2018-11-28 23:17:13,893 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 147 states to 121 states and 178 transitions. [2018-11-28 23:17:13,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-28 23:17:13,894 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-28 23:17:13,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 178 transitions. [2018-11-28 23:17:13,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:13,894 INFO L705 BuchiCegarLoop]: Abstraction has 121 states and 178 transitions. [2018-11-28 23:17:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 178 transitions. [2018-11-28 23:17:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2018-11-28 23:17:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-11-28 23:17:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2018-11-28 23:17:13,904 INFO L728 BuchiCegarLoop]: Abstraction has 101 states and 153 transitions. [2018-11-28 23:17:13,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:17:13,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:17:13,905 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 4 states. [2018-11-28 23:17:13,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:17:13,951 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2018-11-28 23:17:13,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:17:13,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 105 transitions. [2018-11-28 23:17:13,954 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 31 [2018-11-28 23:17:13,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 72 states and 97 transitions. [2018-11-28 23:17:13,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2018-11-28 23:17:13,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2018-11-28 23:17:13,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 97 transitions. [2018-11-28 23:17:13,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:13,957 INFO L705 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2018-11-28 23:17:13,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 97 transitions. [2018-11-28 23:17:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 35. [2018-11-28 23:17:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 23:17:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2018-11-28 23:17:13,961 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-28 23:17:13,962 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-28 23:17:13,962 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:17:13,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2018-11-28 23:17:13,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-28 23:17:13,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:13,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:13,963 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:17:13,963 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:17:13,963 INFO L794 eck$LassoCheckResult]: Stem: 746#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 747#L18-2 assume !!(0 != main_~i~0); 766#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 768#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 753#L18-2 [2018-11-28 23:17:13,964 INFO L796 eck$LassoCheckResult]: Loop: 753#L18-2 assume !!(0 != main_~i~0); 773#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 751#L12 assume !(main_~i~0 < 0); 753#L18-2 [2018-11-28 23:17:13,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash 963757, now seen corresponding path program 1 times [2018-11-28 23:17:13,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,977 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 2 times [2018-11-28 23:17:13,977 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:13,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:13,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1353476249, now seen corresponding path program 2 times [2018-11-28 23:17:13,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:13,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:13,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:13,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,039 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:14,040 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:14,040 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:14,040 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:14,040 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:17:14,040 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:14,040 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:14,040 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:14,041 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:17:14,041 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:14,041 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:14,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:14,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:14,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:14,104 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:14,105 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:14,110 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:17:14,110 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:17:14,134 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:17:14,134 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:17:14,157 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:17:14,159 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:17:14,159 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:17:14,159 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:17:14,160 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:17:14,160 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:17:14,160 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:17:14,160 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:17:14,160 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:17:14,160 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv_false-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:17:14,160 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:17:14,160 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:17:14,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:14,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:14,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:17:14,227 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:17:14,227 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:17:14,229 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 [2018-11-28 23:17:14,230 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:17:14,230 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:17:14,230 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:17:14,230 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:17:14,230 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:17:14,232 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:17:14,232 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:17:14,242 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:17:14,246 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2018-11-28 23:17:14,247 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:17:14,247 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:17:14,248 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:17:14,248 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:17:14,248 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-28 23:17:14,248 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:17:14,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:14,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:17:14,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:17:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:17:14,342 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 [2018-11-28 23:17:14,342 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 4 states. [2018-11-28 23:17:14,370 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 4 states. Result 73 states and 96 transitions. Complement of second has 5 states. [2018-11-28 23:17:14,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:17:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:17:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-11-28 23:17:14,372 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:17:14,373 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:14,373 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-28 23:17:14,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:14,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-28 23:17:14,374 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:17:14,374 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 96 transitions. [2018-11-28 23:17:14,376 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2018-11-28 23:17:14,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 65 states and 88 transitions. [2018-11-28 23:17:14,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 23:17:14,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2018-11-28 23:17:14,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 88 transitions. [2018-11-28 23:17:14,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:17:14,378 INFO L705 BuchiCegarLoop]: Abstraction has 65 states and 88 transitions. [2018-11-28 23:17:14,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 88 transitions. [2018-11-28 23:17:14,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2018-11-28 23:17:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-28 23:17:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2018-11-28 23:17:14,383 INFO L728 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2018-11-28 23:17:14,383 INFO L608 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2018-11-28 23:17:14,383 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 23:17:14,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 80 transitions. [2018-11-28 23:17:14,384 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2018-11-28 23:17:14,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:17:14,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:17:14,385 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:17:14,385 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2018-11-28 23:17:14,385 INFO L794 eck$LassoCheckResult]: Stem: 896#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 897#L18-2 assume !!(0 != main_~i~0); 927#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 925#L18 assume !(main_~i~0 > 0); 908#L18-2 [2018-11-28 23:17:14,385 INFO L796 eck$LassoCheckResult]: Loop: 908#L18-2 assume !!(0 != main_~i~0); 948#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 936#L12 assume !(main_~i~0 < 0); 947#L18-2 assume !!(0 != main_~i~0); 935#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 893#L18 assume !(main_~i~0 > 0); 908#L18-2 [2018-11-28 23:17:14,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,386 INFO L82 PathProgramCache]: Analyzing trace with hash 963759, now seen corresponding path program 1 times [2018-11-28 23:17:14,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:14,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:14,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:17:14,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1186496604, now seen corresponding path program 1 times [2018-11-28 23:17:14,393 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:14,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:14,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:14,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:17:14,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1517058698, now seen corresponding path program 1 times [2018-11-28 23:17:14,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:17:14,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:17:14,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:17:14,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:17:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:17:14,542 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-11-28 23:17:14,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:17:14 BoogieIcfgContainer [2018-11-28 23:17:14,621 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:17:14,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:17:14,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:17:14,622 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:17:14,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:17:09" (3/4) ... [2018-11-28 23:17:14,626 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 23:17:14,671 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:17:14,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:17:14,673 INFO L168 Benchmark]: Toolchain (without parser) took 6017.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -229.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:14,674 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:14,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.04 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:14,675 INFO L168 Benchmark]: Boogie Preprocessor took 29.67 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:17:14,676 INFO L168 Benchmark]: RCFGBuilder took 453.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,677 INFO L168 Benchmark]: BuchiAutomizer took 5112.48 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -84.2 MB). Peak memory consumption was 312.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,678 INFO L168 Benchmark]: Witness Printer took 50.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:17:14,682 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.04 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.67 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 453.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -163.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5112.48 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 75.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -84.2 MB). Peak memory consumption was 312.4 MB. Max. memory is 11.5 GB. * Witness Printer took 50.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 6 locations. One deterministic module has affine ranking function -1 * i and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 57 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.3s. Construction of modules took 0.4s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 57 states and ocurred in iteration 6. Nontrivial modules had stage [3, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 61 SDtfs, 69 SDslu, 3 SDs, 0 SdLazy, 142 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT3 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax190 hnf98 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp93 dnf100 smp100 tf111 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58ad67fe=0, \result=0, i=-1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) Loop: [L9] COND TRUE i != 0 [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...