./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f77d0d21d7cb1d6a29608eb65655982c4edaf4ed ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.23-0cd3be1 [2018-11-28 13:07:46,903 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:07:46,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:07:46,910 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:07:46,911 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:07:46,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:07:46,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:07:46,913 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:07:46,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:07:46,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:07:46,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:07:46,915 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:07:46,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:07:46,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:07:46,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:07:46,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:07:46,918 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:07:46,920 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:07:46,921 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:07:46,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:07:46,922 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:07:46,923 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:07:46,925 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:07:46,925 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:07:46,925 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:07:46,926 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:07:46,926 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:07:46,926 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:07:46,927 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:07:46,928 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:07:46,928 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:07:46,928 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:07:46,928 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:07:46,929 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:07:46,929 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:07:46,930 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:07:46,930 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 13:07:46,938 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:07:46,938 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:07:46,939 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:07:46,939 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:07:46,939 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:07:46,939 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 13:07:46,939 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 13:07:46,940 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 13:07:46,940 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 13:07:46,940 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 13:07:46,940 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 13:07:46,940 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:07:46,940 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:07:46,940 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:07:46,941 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:07:46,941 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 13:07:46,941 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 13:07:46,941 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 13:07:46,941 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:07:46,941 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 13:07:46,941 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:07:46,942 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 13:07:46,942 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:07:46,942 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:07:46,942 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 13:07:46,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:07:46,942 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:07:46,943 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 13:07:46,943 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 13:07:46,943 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f77d0d21d7cb1d6a29608eb65655982c4edaf4ed [2018-11-28 13:07:46,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:07:46,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:07:46,974 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:07:46,975 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:07:46,975 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:07:46,975 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c [2018-11-28 13:07:47,011 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/data/779e151a0/655269255ea04c2a94f0b20009fc6930/FLAG3467cc0fb [2018-11-28 13:07:47,392 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:07:47,392 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/sv-benchmarks/c/termination-restricted-15/Ex07_false-termination_true-no-overflow.c [2018-11-28 13:07:47,396 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/data/779e151a0/655269255ea04c2a94f0b20009fc6930/FLAG3467cc0fb [2018-11-28 13:07:47,404 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/data/779e151a0/655269255ea04c2a94f0b20009fc6930 [2018-11-28 13:07:47,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:07:47,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:07:47,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:07:47,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:07:47,410 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:07:47,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158ddca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47, skipping insertion in model container [2018-11-28 13:07:47,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:07:47,426 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:07:47,512 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:07:47,514 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:07:47,522 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:07:47,530 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:07:47,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47 WrapperNode [2018-11-28 13:07:47,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:07:47,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:07:47,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:07:47,531 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:07:47,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:07:47,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:07:47,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:07:47,551 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:07:47,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... [2018-11-28 13:07:47,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:07:47,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:07:47,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:07:47,564 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:07:47,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:07:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:07:47,745 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:07:47,746 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 13:07:47,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:07:47 BoogieIcfgContainer [2018-11-28 13:07:47,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:07:47,747 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 13:07:47,747 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 13:07:47,750 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 13:07:47,751 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:07:47,751 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 01:07:47" (1/3) ... [2018-11-28 13:07:47,752 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1cad4ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:07:47, skipping insertion in model container [2018-11-28 13:07:47,752 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:07:47,752 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:07:47" (2/3) ... [2018-11-28 13:07:47,753 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1cad4ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:07:47, skipping insertion in model container [2018-11-28 13:07:47,753 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:07:47,753 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:07:47" (3/3) ... [2018-11-28 13:07:47,755 INFO L375 chiAutomizerObserver]: Analyzing ICFG Ex07_false-termination_true-no-overflow.c [2018-11-28 13:07:47,804 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:07:47,805 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 13:07:47,805 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 13:07:47,805 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 13:07:47,805 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:07:47,805 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:07:47,805 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 13:07:47,805 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:07:47,805 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 13:07:47,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 13:07:47,830 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:07:47,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:07:47,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:07:47,835 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 13:07:47,835 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:07:47,835 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 13:07:47,835 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 13:07:47,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:07:47,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:07:47,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:07:47,836 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 13:07:47,836 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:07:47,842 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2018-11-28 13:07:47,842 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(0 != ~unnamed0~0~true); 3#L10true assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 9#L10-2true assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 5#L13-1true [2018-11-28 13:07:47,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:47,847 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 13:07:47,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:47,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:47,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:47,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:47,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:47,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2018-11-28 13:07:47,913 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:47,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:47,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:47,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:47,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:07:47,969 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 13:07:47,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:07:47,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:07:47,976 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 13:07:47,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:07:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:07:47,993 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-11-28 13:07:48,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:07:48,022 INFO L93 Difference]: Finished difference Result 7 states and 10 transitions. [2018-11-28 13:07:48,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:07:48,024 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 10 transitions. [2018-11-28 13:07:48,024 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:07:48,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 13:07:48,028 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 13:07:48,028 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 13:07:48,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 13:07:48,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:07:48,029 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 13:07:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 13:07:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-28 13:07:48,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 13:07:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 13:07:48,051 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 13:07:48,051 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 13:07:48,051 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 13:07:48,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-28 13:07:48,051 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:07:48,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:07:48,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:07:48,052 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 13:07:48,052 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:07:48,052 INFO L794 eck$LassoCheckResult]: Stem: 27#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; 28#L13-1 [2018-11-28 13:07:48,052 INFO L796 eck$LassoCheckResult]: Loop: 28#L13-1 assume !!(0 != ~unnamed0~0~true); 24#L10 assume !(main_~i~0 > 0); 26#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 28#L13-1 [2018-11-28 13:07:48,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-28 13:07:48,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,057 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2018-11-28 13:07:48,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:07:48,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,064 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2018-11-28 13:07:48,065 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,114 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:07:48,115 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:07:48,115 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:07:48,115 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:07:48,115 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:07:48,116 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,116 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:07:48,116 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:07:48,116 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 13:07:48,116 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:07:48,116 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:07:48,131 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 13:07:48,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:07:48,143 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 13:07:48,202 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:07:48,203 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,206 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:07:48,206 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:07:48,225 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:07:48,225 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,233 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:07:48,233 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:07:48,253 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:07:48,253 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,259 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:07:48,259 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,275 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:07:48,275 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:07:48,294 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:07:48,295 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:07:48,295 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:07:48,295 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:07:48,295 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:07:48,295 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:07:48,295 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,295 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:07:48,295 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:07:48,295 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 13:07:48,295 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:07:48,295 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:07:48,296 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 13:07:48,298 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 13:07:48,303 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 13:07:48,335 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:07:48,338 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:07:48,340 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 13:07:48,340 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:07:48,341 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:07:48,341 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:07:48,341 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:07:48,343 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 13:07:48,344 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 13:07:48,349 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:07:48,349 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 13:07:48,350 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:07:48,350 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:07:48,350 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:07:48,350 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:07:48,350 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:07:48,351 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:07:48,351 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:07:48,355 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:07:48,357 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:07:48,357 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:07:48,359 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:07:48,359 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:07:48,359 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:07:48,359 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 13:07:48,360 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:07:48,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:07:48,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:07:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:07:48,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:07:48,421 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 13:07:48,423 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 13:07:48,424 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-28 13:07:48,452 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 19 states and 26 transitions. Complement of second has 8 states. [2018-11-28 13:07:48,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 13:07:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:07:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2018-11-28 13:07:48,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 13:07:48,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:07:48,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 13:07:48,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:07:48,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 13:07:48,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:07:48,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2018-11-28 13:07:48,457 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:07:48,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 13 states and 17 transitions. [2018-11-28 13:07:48,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-28 13:07:48,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 13:07:48,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-11-28 13:07:48,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:07:48,459 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-11-28 13:07:48,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-11-28 13:07:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-11-28 13:07:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 13:07:48,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-11-28 13:07:48,460 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-28 13:07:48,461 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-28 13:07:48,461 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 13:07:48,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-11-28 13:07:48,461 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:07:48,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:07:48,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:07:48,462 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 13:07:48,462 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:07:48,462 INFO L794 eck$LassoCheckResult]: Stem: 91#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; 92#L13-1 assume !!(0 != ~unnamed0~0~true); 96#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 98#L10-2 [2018-11-28 13:07:48,462 INFO L796 eck$LassoCheckResult]: Loop: 98#L10-2 assume !(main_~i~0 < 0); 93#L13-1 assume !!(0 != ~unnamed0~0~true); 94#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 98#L10-2 [2018-11-28 13:07:48,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 13:07:48,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,468 INFO L82 PathProgramCache]: Analyzing trace with hash 50295, now seen corresponding path program 1 times [2018-11-28 13:07:48,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,473 INFO L82 PathProgramCache]: Analyzing trace with hash 925775829, now seen corresponding path program 1 times [2018-11-28 13:07:48,473 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,509 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:07:48,510 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:07:48,510 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:07:48,510 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:07:48,510 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:07:48,510 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,510 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:07:48,510 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:07:48,510 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 13:07:48,510 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:07:48,510 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:07:48,511 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 13:07:48,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:07:48,524 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 13:07:48,555 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:07:48,556 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,566 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:07:48,566 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:07:48,585 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:07:48,585 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,593 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:07:48,593 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,610 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:07:48,610 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:07:48,634 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:07:48,635 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:07:48,635 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:07:48,635 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:07:48,635 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:07:48,635 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:07:48,635 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:07:48,636 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:07:48,636 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:07:48,636 INFO L131 ssoRankerPreferences]: Filename of dumped script: Ex07_false-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 13:07:48,636 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:07:48,636 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:07:48,636 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 13:07:48,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:07:48,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:07:48,671 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:07:48,671 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:07:48,672 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 13:07:48,672 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:07:48,672 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:07:48,672 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:07:48,673 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:07:48,673 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:07:48,673 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:07:48,673 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:07:48,677 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:07:48,680 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:07:48,680 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 13:07:48,680 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:07:48,681 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:07:48,681 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:07:48,681 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 13:07:48,681 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:07:48,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:07:48,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:07:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:07:48,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:07:48,712 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 13:07:48,712 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 13:07:48,713 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-11-28 13:07:48,741 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2018-11-28 13:07:48,741 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 13:07:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:07:48,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-28 13:07:48,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 13:07:48,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:07:48,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 13:07:48,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:07:48,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 13:07:48,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:07:48,743 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2018-11-28 13:07:48,743 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:07:48,744 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2018-11-28 13:07:48,744 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 13:07:48,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-28 13:07:48,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-11-28 13:07:48,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:07:48,744 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-28 13:07:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-11-28 13:07:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2018-11-28 13:07:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 13:07:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-28 13:07:48,746 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 13:07:48,746 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 13:07:48,746 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 13:07:48,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-28 13:07:48,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:07:48,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:07:48,747 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:07:48,747 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 13:07:48,747 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:07:48,748 INFO L794 eck$LassoCheckResult]: Stem: 160#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; 161#L13-1 assume !!(0 != ~unnamed0~0~true); 168#L10 assume !(main_~i~0 > 0); 156#L10-2 [2018-11-28 13:07:48,748 INFO L796 eck$LassoCheckResult]: Loop: 156#L10-2 assume !(main_~i~0 < 0); 162#L13-1 assume !!(0 != ~unnamed0~0~true); 155#L10 assume !(main_~i~0 > 0); 156#L10-2 [2018-11-28 13:07:48,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-28 13:07:48,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,753 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2018-11-28 13:07:48,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:07:48,758 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2018-11-28 13:07:48,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:07:48,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:07:48,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:07:48,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:07:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:07:48,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 01:07:48 BoogieIcfgContainer [2018-11-28 13:07:48,814 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 13:07:48,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:07:48,815 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:07:48,815 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:07:48,816 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:07:47" (3/4) ... [2018-11-28 13:07:48,819 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 13:07:48,851 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0f0b20d5-fd21-452b-8770-fbd99b2003b4/bin-2019/uautomizer/witness.graphml [2018-11-28 13:07:48,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:07:48,852 INFO L168 Benchmark]: Toolchain (without parser) took 1445.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 954.0 MB in the beginning and 989.7 MB in the end (delta: -35.7 MB). Peak memory consumption was 111.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:07:48,853 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:07:48,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.62 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 945.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2018-11-28 13:07:48,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.88 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:07:48,854 INFO L168 Benchmark]: Boogie Preprocessor took 12.27 ms. Allocated memory is still 1.0 GB. Free memory is still 943.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:07:48,854 INFO L168 Benchmark]: RCFGBuilder took 183.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:07:48,855 INFO L168 Benchmark]: BuchiAutomizer took 1067.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.7 MB in the end (delta: 141.1 MB). Peak memory consumption was 141.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:07:48,855 INFO L168 Benchmark]: Witness Printer took 36.60 ms. Allocated memory is still 1.2 GB. Free memory is still 989.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:07:48,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.62 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 945.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.88 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.27 ms. Allocated memory is still 1.0 GB. Free memory is still 943.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1067.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 989.7 MB in the end (delta: 141.1 MB). Peak memory consumption was 141.1 MB. Max. memory is 11.5 GB. * Witness Printer took 36.60 ms. Allocated memory is still 1.2 GB. Free memory is still 989.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 13 SDslu, 5 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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@4737605b=0, \result=0, i=0} - 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 \read(true) [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE \read(true) [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...