./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/termination-restricted-15/Ex06.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 3ac2445d235ff9d71a6974ac9afce215f9983492 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-30f4e4a [2019-11-28 02:58:17,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:58:17,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:58:17,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:58:17,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:58:17,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:58:17,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:58:17,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:58:17,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:58:17,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:58:17,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:58:17,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:58:17,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:58:17,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:58:17,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:58:17,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:58:17,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:58:17,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:58:17,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:58:17,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:58:17,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:58:17,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:58:17,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:58:17,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:58:17,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:58:17,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:58:17,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:58:17,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:58:17,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:58:17,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:58:17,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:58:17,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:58:17,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:58:17,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:58:17,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:58:17,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:58:17,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:58:17,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:58:17,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:58:17,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:58:17,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:58:17,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:58:17,474 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:58:17,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:58:17,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:58:17,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:58:17,476 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:58:17,476 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:58:17,477 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:58:17,477 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:58:17,477 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:58:17,477 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:58:17,478 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:58:17,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:58:17,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:58:17,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:58:17,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:58:17,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:58:17,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:58:17,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:58:17,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:58:17,480 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:58:17,480 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:58:17,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:58:17,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:58:17,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:58:17,481 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:58:17,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:58:17,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:58:17,481 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:58:17,483 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:58:17,483 INFO L138 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 -> 3ac2445d235ff9d71a6974ac9afce215f9983492 [2019-11-28 02:58:17,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:58:17,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:58:17,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:58:17,836 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:58:17,838 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:58:17,839 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex06.c [2019-11-28 02:58:17,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e810141/7d14302d12434d86839516732ad4de12/FLAGdb111a907 [2019-11-28 02:58:18,440 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:58:18,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex06.c [2019-11-28 02:58:18,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e810141/7d14302d12434d86839516732ad4de12/FLAGdb111a907 [2019-11-28 02:58:18,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e810141/7d14302d12434d86839516732ad4de12 [2019-11-28 02:58:18,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:58:18,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:58:18,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:18,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:58:18,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:58:18,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:18" (1/1) ... [2019-11-28 02:58:18,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c163bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:18, skipping insertion in model container [2019-11-28 02:58:18,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:18" (1/1) ... [2019-11-28 02:58:18,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:58:18,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:58:19,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:19,070 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:58:19,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:19,103 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:58:19,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19 WrapperNode [2019-11-28 02:58:19,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:19,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:19,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:58:19,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:58:19,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:19,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:58:19,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:58:19,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:58:19,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (1/1) ... [2019-11-28 02:58:19,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:58:19,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:58:19,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:58:19,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:58:19,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (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 [2019-11-28 02:58:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:58:19,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:58:19,440 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:58:19,441 INFO L297 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-28 02:58:19,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:19 BoogieIcfgContainer [2019-11-28 02:58:19,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:58:19,443 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:58:19,443 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:58:19,446 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:58:19,447 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:19,447 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:58:18" (1/3) ... [2019-11-28 02:58:19,449 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3064ec57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:19, skipping insertion in model container [2019-11-28 02:58:19,449 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:19,449 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:19" (2/3) ... [2019-11-28 02:58:19,449 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3064ec57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:19, skipping insertion in model container [2019-11-28 02:58:19,450 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:19,450 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:19" (3/3) ... [2019-11-28 02:58:19,452 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex06.c [2019-11-28 02:58:19,503 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:58:19,503 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:58:19,503 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:58:19,504 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:58:19,504 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:58:19,504 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:58:19,504 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:58:19,504 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:58:19,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:58:19,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:58:19,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:19,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:19,547 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:19,547 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:58:19,547 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:58:19,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-28 02:58:19,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:58:19,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:19,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:19,549 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:19,549 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:58:19,556 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2019-11-28 02:58:19,557 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 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 [2019-11-28 02:58:19,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:19,563 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:58:19,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:19,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551762453] [2019-11-28 02:58:19,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,662 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:19,664 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2019-11-28 02:58:19,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:19,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404442268] [2019-11-28 02:58:19,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:19,747 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404442268] [2019-11-28 02:58:19,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:58:19,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:58:19,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220493263] [2019-11-28 02:58:19,759 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-28 02:58:19,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:58:19,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:58:19,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:58:19,806 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-28 02:58:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:58:19,884 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-11-28 02:58:19,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:58:19,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2019-11-28 02:58:19,889 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:58:19,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 7 states and 10 transitions. [2019-11-28 02:58:19,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-28 02:58:19,894 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 02:58:19,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-28 02:58:19,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:58:19,895 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 02:58:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-28 02:58:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-28 02:58:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-28 02:58:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-28 02:58:19,920 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 02:58:19,920 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-28 02:58:19,921 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:58:19,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-28 02:58:19,922 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:58:19,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:19,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:19,922 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:19,922 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:58:19,923 INFO L794 eck$LassoCheckResult]: Stem: 35#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; 36#L13-1 [2019-11-28 02:58:19,923 INFO L796 eck$LassoCheckResult]: Loop: 36#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 32#L10 assume !(main_~i~0 > 0); 34#L10-2 assume main_~i~0 < 0;main_~i~0 := 1 + main_~i~0; 36#L13-1 [2019-11-28 02:58:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:19,924 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-28 02:58:19,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:19,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305283305] [2019-11-28 02:58:19,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,931 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:19,932 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2019-11-28 02:58:19,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:19,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945332419] [2019-11-28 02:58:19,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,945 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:19,945 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 1 times [2019-11-28 02:58:19,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:19,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694483822] [2019-11-28 02:58:19,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:19,958 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:20,031 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:20,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:20,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:20,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:20,033 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:20,033 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,033 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:20,033 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:20,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2019-11-28 02:58:20,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:20,034 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:20,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,182 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:20,183 INFO L404 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) [2019-11-28 02:58:20,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:20,195 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2019-11-28 02:58:20,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:20,219 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,228 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:20,232 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:20,232 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:20,232 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:20,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:20,232 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:20,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:20,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:20,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration2_Loop [2019-11-28 02:58:20,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:20,234 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:20,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,328 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:20,334 INFO L489 LassoAnalysis]: Using template 'affine'. 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 [2019-11-28 02:58:20,353 INFO L120 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 [2019-11-28 02:58:20,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:20,356 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:20,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:20,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:20,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:20,361 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:20,361 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:58:20,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:20,375 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:20,375 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. 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 [2019-11-28 02:58:20,384 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:20,384 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:20,385 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:20,386 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 02:58:20,394 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:20,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:20,449 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:58:20,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:20,462 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:58:20,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:20,489 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 [2019-11-28 02:58:20,490 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 4 states. [2019-11-28 02:58:20,560 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. [2019-11-28 02:58:20,561 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 [2019-11-28 02:58:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-28 02:58:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-11-28 02:58:20,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-28 02:58:20,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:20,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-28 02:58:20,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:20,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-28 02:58:20,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:20,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2019-11-28 02:58:20,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:58:20,571 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 13 states and 17 transitions. [2019-11-28 02:58:20,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-28 02:58:20,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-28 02:58:20,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-11-28 02:58:20,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:20,573 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-28 02:58:20,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-11-28 02:58:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-28 02:58:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:58:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-28 02:58:20,576 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-28 02:58:20,576 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-28 02:58:20,576 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:58:20,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-28 02:58:20,577 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:58:20,577 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:20,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:20,578 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:58:20,578 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:58:20,579 INFO L794 eck$LassoCheckResult]: Stem: 99#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; 100#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 104#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 106#L10-2 [2019-11-28 02:58:20,579 INFO L796 eck$LassoCheckResult]: Loop: 106#L10-2 assume !(main_~i~0 < 0); 101#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 102#L10 assume main_~i~0 > 0;main_~i~0 := main_~i~0 - 1; 106#L10-2 [2019-11-28 02:58:20,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:20,579 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-28 02:58:20,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:20,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748686784] [2019-11-28 02:58:20,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:20,591 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash 50295, now seen corresponding path program 1 times [2019-11-28 02:58:20,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:20,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366564200] [2019-11-28 02:58:20,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:20,602 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:20,603 INFO L82 PathProgramCache]: Analyzing trace with hash 925775829, now seen corresponding path program 1 times [2019-11-28 02:58:20,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:20,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602099594] [2019-11-28 02:58:20,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:20,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:20,663 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:20,664 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:20,664 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:20,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:20,664 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-28 02:58:20,665 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,665 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:20,665 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:20,665 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2019-11-28 02:58:20,665 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:20,665 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:20,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,757 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:20,757 INFO L404 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) [2019-11-28 02:58:20,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:20,765 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,774 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:20,774 INFO L440 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) [2019-11-28 02:58:20,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:20,789 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-28 02:58:20,796 INFO L440 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 [2019-11-28 02:58:20,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-28 02:58:20,811 INFO L160 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) [2019-11-28 02:58:20,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-28 02:58:20,836 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,844 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-28 02:58:20,848 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:58:20,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:58:20,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:58:20,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:58:20,848 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:58:20,851 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,851 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:58:20,851 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:58:20,851 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration3_Loop [2019-11-28 02:58:20,852 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:58:20,852 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:58:20,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-28 02:58:20,949 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:58:20,949 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2019-11-28 02:58:20,964 INFO L120 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 [2019-11-28 02:58:20,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:20,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:20,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:20,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:20,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:20,974 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. 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) [2019-11-28 02:58:20,992 INFO L120 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 Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:20,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:20,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:20,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:20,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:21,000 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:58:21,001 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:58:21,009 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. 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) [2019-11-28 02:58:21,028 INFO L120 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 [2019-11-28 02:58:21,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:58:21,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:58:21,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:58:21,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:58:21,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:58:21,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:58:21,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:21,037 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:58:21,041 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-28 02:58:21,041 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. 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 [2019-11-28 02:58:21,051 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-28 02:58:21,052 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-28 02:58:21,052 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:58:21,052 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-28 02:58:21,054 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-28 02:58:21,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:21,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:58:21,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:58:21,107 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:58:21,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:58:21,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:58:21,121 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 [2019-11-28 02:58:21,121 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-28 02:58:21,148 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. [2019-11-28 02:58:21,149 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 [2019-11-28 02:58:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:58:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-28 02:58:21,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-28 02:58:21,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:21,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-28 02:58:21,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:21,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-28 02:58:21,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:58:21,151 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2019-11-28 02:58:21,153 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-28 02:58:21,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2019-11-28 02:58:21,154 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-28 02:58:21,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-28 02:58:21,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2019-11-28 02:58:21,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-28 02:58:21,155 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-28 02:58:21,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2019-11-28 02:58:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2019-11-28 02:58:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 02:58:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-28 02:58:21,158 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 02:58:21,158 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-28 02:58:21,158 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:58:21,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-28 02:58:21,159 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:58:21,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:21,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:21,160 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:58:21,160 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:58:21,160 INFO L794 eck$LassoCheckResult]: Stem: 168#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; 169#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 176#L10 assume !(main_~i~0 > 0); 164#L10-2 [2019-11-28 02:58:21,160 INFO L796 eck$LassoCheckResult]: Loop: 164#L10-2 assume !(main_~i~0 < 0); 170#L13-1 assume !!(main_~i~0 >= -5 && main_~i~0 <= 5); 163#L10 assume !(main_~i~0 > 0); 164#L10-2 [2019-11-28 02:58:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:21,161 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-28 02:58:21,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:21,161 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60669628] [2019-11-28 02:58:21,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:21,170 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash 50297, now seen corresponding path program 1 times [2019-11-28 02:58:21,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:21,171 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286800398] [2019-11-28 02:58:21,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:21,179 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash 925835413, now seen corresponding path program 1 times [2019-11-28 02:58:21,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:21,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944520913] [2019-11-28 02:58:21,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:21,189 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:21,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:21 BoogieIcfgContainer [2019-11-28 02:58:21,256 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:58:21,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:58:21,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:58:21,257 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:58:21,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:19" (3/4) ... [2019-11-28 02:58:21,261 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 02:58:21,312 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:58:21,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:58:21,316 INFO L168 Benchmark]: Toolchain (without parser) took 2471.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 957.7 MB in the beginning and 934.0 MB in the end (delta: 23.7 MB). Peak memory consumption was 147.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:21,316 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:21,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.27 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:21,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:21,319 INFO L168 Benchmark]: Boogie Preprocessor took 20.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:21,320 INFO L168 Benchmark]: RCFGBuilder took 219.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:21,321 INFO L168 Benchmark]: BuchiAutomizer took 1813.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:21,321 INFO L168 Benchmark]: Witness Printer took 56.62 ms. Allocated memory is still 1.2 GB. Free memory is still 934.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:21,326 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 260.27 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 946.9 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 96.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 219.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1813.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 934.0 MB in the end (delta: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 11.5 GB. * Witness Printer took 56.62 ms. Allocated memory is still 1.2 GB. Free memory is still 934.0 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 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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: 19 SDtfs, 19 SDslu, 3 SDs, 0 SdLazy, 34 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax186 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 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@c208d0d=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 i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) Loop: [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 [L10] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...