./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/NonTermination3-1.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-crafted/NonTermination3-1.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 76e89a58b9c6f7059fcf416ee7a1666558a3d440 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:56:38,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:56:38,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:56:38,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:56:38,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:56:38,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:56:38,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:56:38,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:56:38,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:56:38,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:56:38,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:56:38,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:56:38,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:56:38,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:56:38,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:56:38,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:56:38,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:56:38,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:56:38,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:56:38,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:56:38,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:56:38,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:56:38,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:56:38,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:56:38,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:56:38,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:56:38,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:56:38,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:56:38,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:56:38,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:56:38,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:56:38,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:56:38,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:56:38,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:56:38,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:56:38,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:56:38,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:56:38,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:56:38,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:56:38,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:56:38,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:56:38,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:56:38,395 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:56:38,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:56:38,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:56:38,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:56:38,398 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:56:38,398 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:56:38,398 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:56:38,399 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:56:38,399 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:56:38,399 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:56:38,399 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:56:38,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:56:38,400 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:56:38,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:56:38,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:56:38,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:56:38,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:56:38,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:56:38,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:56:38,402 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:56:38,402 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:56:38,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:56:38,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:56:38,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:56:38,403 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:56:38,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:56:38,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:56:38,404 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:56:38,405 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:56:38,406 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 -> 76e89a58b9c6f7059fcf416ee7a1666558a3d440 [2019-11-28 02:56:38,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:56:38,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:56:38,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:56:38,752 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:56:38,752 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:56:38,753 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2019-11-28 02:56:38,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c570b5963/f451867ece51402ba20897827ca25bc4/FLAGfadf756aa [2019-11-28 02:56:39,328 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:56:39,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2019-11-28 02:56:39,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c570b5963/f451867ece51402ba20897827ca25bc4/FLAGfadf756aa [2019-11-28 02:56:39,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c570b5963/f451867ece51402ba20897827ca25bc4 [2019-11-28 02:56:39,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:56:39,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:56:39,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:56:39,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:56:39,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:56:39,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:39,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a08f8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39, skipping insertion in model container [2019-11-28 02:56:39,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:39,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:56:39,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:56:39,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:56:39,927 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:56:39,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:56:39,977 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:56:39,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39 WrapperNode [2019-11-28 02:56:39,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:56:39,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:56:39,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:56:39,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:56:39,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:39,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:56:40,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:56:40,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:56:40,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:56:40,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (1/1) ... [2019-11-28 02:56:40,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:56:40,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:56:40,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:56:40,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:56:40,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (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 02:56:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:56:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:56:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:56:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:56:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:56:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:56:40,386 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:56:40,387 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 02:56:40,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:40 BoogieIcfgContainer [2019-11-28 02:56:40,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:56:40,390 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:56:40,391 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:56:40,410 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:56:40,415 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:40,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:39" (1/3) ... [2019-11-28 02:56:40,418 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20829c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:40, skipping insertion in model container [2019-11-28 02:56:40,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:40,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:39" (2/3) ... [2019-11-28 02:56:40,424 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20829c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:40, skipping insertion in model container [2019-11-28 02:56:40,424 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:56:40,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:40" (3/3) ... [2019-11-28 02:56:40,430 INFO L371 chiAutomizerObserver]: Analyzing ICFG NonTermination3-1.c [2019-11-28 02:56:40,504 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:56:40,504 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:56:40,504 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:56:40,504 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:56:40,505 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:56:40,505 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:56:40,505 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:56:40,505 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:56:40,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 02:56:40,537 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-28 02:56:40,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:40,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:40,543 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:56:40,544 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:56:40,544 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:56:40,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2019-11-28 02:56:40,545 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-28 02:56:40,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:40,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:40,546 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-28 02:56:40,546 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-28 02:56:40,554 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 5#L13-3true [2019-11-28 02:56:40,555 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-3true assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 7#L13-2true main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 5#L13-3true [2019-11-28 02:56:40,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-11-28 02:56:40,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:40,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449939669] [2019-11-28 02:56:40,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:40,677 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:40,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2019-11-28 02:56:40,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:40,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808665477] [2019-11-28 02:56:40,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:40,700 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:40,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:40,702 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2019-11-28 02:56:40,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:40,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856265532] [2019-11-28 02:56:40,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:40,743 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:40,967 INFO L210 LassoAnalysis]: Preferences: [2019-11-28 02:56:40,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-28 02:56:40,968 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-28 02:56:40,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-28 02:56:40,969 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-28 02:56:40,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:40,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-28 02:56:40,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-28 02:56:40,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: NonTermination3-1.c_Iteration1_Lasso [2019-11-28 02:56:40,971 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-28 02:56:40,971 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-28 02:56:40,998 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 02:56:41,006 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 02:56:41,011 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 02:56:41,015 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 02:56:41,084 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 02:56:41,088 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 02:56:41,096 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 02:56:41,100 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 02:56:41,105 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 02:56:41,109 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 02:56:41,282 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-28 02:56:41,288 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:41,295 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 02:56:41,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:41,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,302 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:41,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-28 02:56:41,305 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:41,320 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 02:56:41,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:41,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:41,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:41,327 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:41,340 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 02:56:41,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:41,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:41,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:41,348 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 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 02:56:41,359 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 02:56:41,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,369 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:41,370 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:56:41,376 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 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 [2019-11-28 02:56:41,390 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 02:56:41,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,396 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:41,397 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:56:41,401 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 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 [2019-11-28 02:56:41,414 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 02:56:41,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,421 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:41,422 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:56:41,428 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:41,442 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 02:56:41,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:41,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:41,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:41,449 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:41,462 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 02:56:41,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-28 02:56:41,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-28 02:56:41,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,466 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-28 02:56:41,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:41,469 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-28 02:56:41,484 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 02:56:41,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-28 02:56:41,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-28 02:56:41,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:41,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-28 02:56:41,494 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-28 02:56:41,494 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-28 02:56:41,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-28 02:56:41,548 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2019-11-28 02:56:41,548 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. 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 02:56:41,556 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:56:41,560 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-28 02:56:41,561 INFO L510 LassoAnalysis]: Proved termination. [2019-11-28 02:56:41,562 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~n~0 + 19 Supporting invariants [] [2019-11-28 02:56:41,574 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2019-11-28 02:56:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:41,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-28 02:56:41,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:41,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:41,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:41,673 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 02:56:41,691 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 02:56:41,693 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2019-11-28 02:56:41,751 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 28 states and 40 transitions. Complement of second has 7 states. [2019-11-28 02:56:41,752 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 02:56:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-28 02:56:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2019-11-28 02:56:41,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-28 02:56:41,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:41,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-28 02:56:41,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:41,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-28 02:56:41,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-28 02:56:41,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 40 transitions. [2019-11-28 02:56:41,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:41,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 9 states and 12 transitions. [2019-11-28 02:56:41,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:41,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-28 02:56:41,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2019-11-28 02:56:41,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:41,774 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2019-11-28 02:56:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2019-11-28 02:56:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-28 02:56:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 02:56:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-11-28 02:56:41,807 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:56:41,807 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-28 02:56:41,808 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-28 02:56:41,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-11-28 02:56:41,809 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:41,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:41,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:41,809 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-28 02:56:41,810 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:41,810 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 84#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 85#L13-3 assume !(main_~n~0 < 10); 83#L17-4 [2019-11-28 02:56:41,811 INFO L796 eck$LassoCheckResult]: Loop: 83#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 89#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 82#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 83#L17-4 [2019-11-28 02:56:41,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:41,811 INFO L82 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2019-11-28 02:56:41,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:41,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268850309] [2019-11-28 02:56:41,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:41,864 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 02:56:41,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268850309] [2019-11-28 02:56:41,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:56:41,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 02:56:41,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488440100] [2019-11-28 02:56:41,871 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 1 times [2019-11-28 02:56:41,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:41,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977404289] [2019-11-28 02:56:41,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:41,920 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:42,032 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-11-28 02:56:42,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:42,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-28 02:56:42,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-28 02:56:42,087 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-28 02:56:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:42,106 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2019-11-28 02:56:42,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-28 02:56:42,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2019-11-28 02:56:42,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:42,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 11 transitions. [2019-11-28 02:56:42,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:42,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:42,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2019-11-28 02:56:42,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:42,113 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-28 02:56:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2019-11-28 02:56:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-28 02:56:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-28 02:56:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2019-11-28 02:56:42,116 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-11-28 02:56:42,116 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-11-28 02:56:42,117 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-28 02:56:42,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2019-11-28 02:56:42,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:42,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:42,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:42,126 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-28 02:56:42,127 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:42,127 INFO L794 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 105#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 106#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 109#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 110#L13-3 assume !(main_~n~0 < 10); 108#L17-4 [2019-11-28 02:56:42,128 INFO L796 eck$LassoCheckResult]: Loop: 108#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 112#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 107#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 108#L17-4 [2019-11-28 02:56:42,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:42,129 INFO L82 PathProgramCache]: Analyzing trace with hash 28698723, now seen corresponding path program 1 times [2019-11-28 02:56:42,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:42,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501994949] [2019-11-28 02:56:42,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:42,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501994949] [2019-11-28 02:56:42,187 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716093633] [2019-11-28 02:56:42,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:42,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 02:56:42,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:42,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:42,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-28 02:56:42,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668389020] [2019-11-28 02:56:42,251 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:42,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:42,252 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 2 times [2019-11-28 02:56:42,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:42,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628315853] [2019-11-28 02:56:42,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:42,282 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:42,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:56:42,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:56:42,415 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 5 states. [2019-11-28 02:56:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:42,435 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2019-11-28 02:56:42,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:56:42,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-28 02:56:42,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:42,438 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2019-11-28 02:56:42,438 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:42,438 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:42,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2019-11-28 02:56:42,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:42,439 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-28 02:56:42,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2019-11-28 02:56:42,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2019-11-28 02:56:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-28 02:56:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2019-11-28 02:56:42,441 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 02:56:42,441 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2019-11-28 02:56:42,441 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-28 02:56:42,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2019-11-28 02:56:42,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:42,443 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:42,443 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:42,444 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2019-11-28 02:56:42,444 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:42,444 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 144#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 145#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 148#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 149#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 150#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 153#L13-3 assume !(main_~n~0 < 10); 147#L17-4 [2019-11-28 02:56:42,444 INFO L796 eck$LassoCheckResult]: Loop: 147#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 152#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 146#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 147#L17-4 [2019-11-28 02:56:42,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:42,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1809671329, now seen corresponding path program 2 times [2019-11-28 02:56:42,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:42,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61643772] [2019-11-28 02:56:42,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:42,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61643772] [2019-11-28 02:56:42,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955929022] [2019-11-28 02:56:42,495 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:42,530 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:56:42,530 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:56:42,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:56:42,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:42,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:42,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-28 02:56:42,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108417406] [2019-11-28 02:56:42,542 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:42,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:42,543 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 3 times [2019-11-28 02:56:42,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:42,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862381497] [2019-11-28 02:56:42,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:42,559 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:42,673 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-11-28 02:56:42,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:42,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 02:56:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-28 02:56:42,708 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 6 states. [2019-11-28 02:56:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:42,727 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-28 02:56:42,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:56:42,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2019-11-28 02:56:42,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:42,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 15 transitions. [2019-11-28 02:56:42,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:42,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:42,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2019-11-28 02:56:42,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:42,731 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2019-11-28 02:56:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2019-11-28 02:56:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-28 02:56:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-28 02:56:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-11-28 02:56:42,733 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 02:56:42,733 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-28 02:56:42,733 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-28 02:56:42,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2019-11-28 02:56:42,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:42,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:42,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:42,735 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1] [2019-11-28 02:56:42,735 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:42,736 INFO L794 eck$LassoCheckResult]: Stem: 201#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 196#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 197#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 198#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 199#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 200#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 205#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 204#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 203#L13-3 assume !(main_~n~0 < 10); 195#L17-4 [2019-11-28 02:56:42,736 INFO L796 eck$LassoCheckResult]: Loop: 195#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 202#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 194#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 195#L17-4 [2019-11-28 02:56:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:42,736 INFO L82 PathProgramCache]: Analyzing trace with hash -367605409, now seen corresponding path program 3 times [2019-11-28 02:56:42,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:42,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343249431] [2019-11-28 02:56:42,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:42,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343249431] [2019-11-28 02:56:42,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115813004] [2019-11-28 02:56:42,785 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:42,836 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-28 02:56:42,837 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:56:42,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:56:42,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:42,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:42,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-28 02:56:42,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27194356] [2019-11-28 02:56:42,849 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:42,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 4 times [2019-11-28 02:56:42,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:42,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957570150] [2019-11-28 02:56:42,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:42,863 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:42,968 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-11-28 02:56:43,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-28 02:56:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-28 02:56:43,016 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 7 states. [2019-11-28 02:56:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:43,056 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-28 02:56:43,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:56:43,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2019-11-28 02:56:43,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:43,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 17 transitions. [2019-11-28 02:56:43,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:43,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:43,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2019-11-28 02:56:43,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:43,061 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-28 02:56:43,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2019-11-28 02:56:43,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-11-28 02:56:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-28 02:56:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-28 02:56:43,066 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 02:56:43,066 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-28 02:56:43,066 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-28 02:56:43,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2019-11-28 02:56:43,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:43,069 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:43,069 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:43,070 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1] [2019-11-28 02:56:43,070 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:43,071 INFO L794 eck$LassoCheckResult]: Stem: 262#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 255#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 256#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 259#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 260#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 261#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 263#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 268#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 267#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 266#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 265#L13-3 assume !(main_~n~0 < 10); 258#L17-4 [2019-11-28 02:56:43,071 INFO L796 eck$LassoCheckResult]: Loop: 258#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 264#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 257#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 258#L17-4 [2019-11-28 02:56:43,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:43,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1081477475, now seen corresponding path program 4 times [2019-11-28 02:56:43,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:43,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96723256] [2019-11-28 02:56:43,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:43,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96723256] [2019-11-28 02:56:43,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387131703] [2019-11-28 02:56:43,163 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:43,198 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:56:43,198 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:56:43,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:56:43,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:43,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:43,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-28 02:56:43,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731449266] [2019-11-28 02:56:43,241 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:43,241 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 5 times [2019-11-28 02:56:43,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:43,241 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651647806] [2019-11-28 02:56:43,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:43,278 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:43,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:43,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:56:43,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:56:43,410 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand 8 states. [2019-11-28 02:56:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:43,445 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2019-11-28 02:56:43,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:56:43,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2019-11-28 02:56:43,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:43,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2019-11-28 02:56:43,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:43,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:43,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2019-11-28 02:56:43,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:43,450 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-28 02:56:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2019-11-28 02:56:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-11-28 02:56:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 02:56:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-28 02:56:43,454 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-28 02:56:43,454 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-28 02:56:43,454 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-28 02:56:43,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2019-11-28 02:56:43,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:43,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:43,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:43,458 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1] [2019-11-28 02:56:43,459 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:43,459 INFO L794 eck$LassoCheckResult]: Stem: 334#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 329#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 330#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 331#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 332#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 333#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 335#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 342#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 341#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 340#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 339#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 338#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 337#L13-3 assume !(main_~n~0 < 10); 328#L17-4 [2019-11-28 02:56:43,459 INFO L796 eck$LassoCheckResult]: Loop: 328#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 336#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 327#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 328#L17-4 [2019-11-28 02:56:43,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash 82234459, now seen corresponding path program 5 times [2019-11-28 02:56:43,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:43,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482581205] [2019-11-28 02:56:43,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:43,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482581205] [2019-11-28 02:56:43,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357286098] [2019-11-28 02:56:43,557 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:43,593 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-28 02:56:43,593 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:56:43,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:56:43,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:43,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:43,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-28 02:56:43,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510117264] [2019-11-28 02:56:43,609 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 6 times [2019-11-28 02:56:43,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:43,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751039406] [2019-11-28 02:56:43,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:43,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:43,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:43,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:56:43,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:56:43,731 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand 9 states. [2019-11-28 02:56:43,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:43,775 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-28 02:56:43,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:56:43,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2019-11-28 02:56:43,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:43,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 21 transitions. [2019-11-28 02:56:43,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:43,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:43,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2019-11-28 02:56:43,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:43,782 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-11-28 02:56:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2019-11-28 02:56:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-28 02:56:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 02:56:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-28 02:56:43,785 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-28 02:56:43,785 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-28 02:56:43,786 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-28 02:56:43,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 20 transitions. [2019-11-28 02:56:43,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:43,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:43,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:43,787 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 1, 1, 1] [2019-11-28 02:56:43,788 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:43,788 INFO L794 eck$LassoCheckResult]: Stem: 417#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 410#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 411#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 414#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 415#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 416#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 418#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 427#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 426#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 425#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 424#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 423#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 422#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 421#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 420#L13-3 assume !(main_~n~0 < 10); 413#L17-4 [2019-11-28 02:56:43,789 INFO L796 eck$LassoCheckResult]: Loop: 413#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 419#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 412#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 413#L17-4 [2019-11-28 02:56:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1717906073, now seen corresponding path program 6 times [2019-11-28 02:56:43,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:43,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279284929] [2019-11-28 02:56:43,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:43,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279284929] [2019-11-28 02:56:43,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850141403] [2019-11-28 02:56:43,882 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:43,933 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-28 02:56:43,933 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:56:43,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:56:43,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:43,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:43,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-28 02:56:43,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921846957] [2019-11-28 02:56:43,948 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:43,950 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 7 times [2019-11-28 02:56:43,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:43,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018357344] [2019-11-28 02:56:43,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:43,965 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:44,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:44,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:56:44,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:56:44,081 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. cyclomatic complexity: 4 Second operand 10 states. [2019-11-28 02:56:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:44,115 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-11-28 02:56:44,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:56:44,116 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2019-11-28 02:56:44,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:44,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 23 transitions. [2019-11-28 02:56:44,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:44,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:44,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 23 transitions. [2019-11-28 02:56:44,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:44,118 INFO L688 BuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-28 02:56:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 23 transitions. [2019-11-28 02:56:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-11-28 02:56:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 02:56:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-28 02:56:44,121 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-28 02:56:44,121 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-28 02:56:44,122 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-28 02:56:44,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 22 transitions. [2019-11-28 02:56:44,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:44,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:44,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:44,124 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 1, 1, 1] [2019-11-28 02:56:44,124 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:44,124 INFO L794 eck$LassoCheckResult]: Stem: 511#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 504#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 505#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 508#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 509#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 510#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 512#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 523#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 522#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 521#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 520#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 519#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 518#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 517#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 516#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 515#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 514#L13-3 assume !(main_~n~0 < 10); 507#L17-4 [2019-11-28 02:56:44,124 INFO L796 eck$LassoCheckResult]: Loop: 507#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 513#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 506#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 507#L17-4 [2019-11-28 02:56:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:44,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1640296791, now seen corresponding path program 7 times [2019-11-28 02:56:44,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:44,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510159635] [2019-11-28 02:56:44,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:44,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510159635] [2019-11-28 02:56:44,202 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17579178] [2019-11-28 02:56:44,203 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:44,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 02:56:44,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:44,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:44,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-28 02:56:44,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593332517] [2019-11-28 02:56:44,258 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:44,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:44,258 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 8 times [2019-11-28 02:56:44,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:44,259 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761056974] [2019-11-28 02:56:44,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:44,272 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:44,381 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2019-11-28 02:56:44,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:44,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 02:56:44,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:56:44,412 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. cyclomatic complexity: 4 Second operand 11 states. [2019-11-28 02:56:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:44,460 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-11-28 02:56:44,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:56:44,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 25 transitions. [2019-11-28 02:56:44,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:44,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 25 transitions. [2019-11-28 02:56:44,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:44,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:44,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 25 transitions. [2019-11-28 02:56:44,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:44,464 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-28 02:56:44,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 25 transitions. [2019-11-28 02:56:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-28 02:56:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 02:56:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-28 02:56:44,469 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-28 02:56:44,469 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-28 02:56:44,469 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-28 02:56:44,469 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 24 transitions. [2019-11-28 02:56:44,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:44,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:44,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:44,472 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [8, 8, 1, 1, 1] [2019-11-28 02:56:44,472 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:44,472 INFO L794 eck$LassoCheckResult]: Stem: 616#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 611#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 612#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 613#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 614#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 615#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 617#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 630#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 629#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 628#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 627#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 626#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 625#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 624#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 623#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 622#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 621#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 620#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 619#L13-3 assume !(main_~n~0 < 10); 610#L17-4 [2019-11-28 02:56:44,473 INFO L796 eck$LassoCheckResult]: Loop: 610#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 618#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 609#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 610#L17-4 [2019-11-28 02:56:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash 72220821, now seen corresponding path program 8 times [2019-11-28 02:56:44,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:44,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366675731] [2019-11-28 02:56:44,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:44,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366675731] [2019-11-28 02:56:44,591 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581078014] [2019-11-28 02:56:44,591 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:44,632 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:56:44,632 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:56:44,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:56:44,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:44,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:44,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-28 02:56:44,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601011805] [2019-11-28 02:56:44,660 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:44,661 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 9 times [2019-11-28 02:56:44,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:44,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578620960] [2019-11-28 02:56:44,662 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:44,670 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:44,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:44,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 02:56:44,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:56:44,783 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. cyclomatic complexity: 4 Second operand 12 states. [2019-11-28 02:56:44,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:44,838 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-11-28 02:56:44,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:56:44,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2019-11-28 02:56:44,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:44,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 27 transitions. [2019-11-28 02:56:44,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:44,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:44,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 27 transitions. [2019-11-28 02:56:44,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:44,841 INFO L688 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2019-11-28 02:56:44,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 27 transitions. [2019-11-28 02:56:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-11-28 02:56:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:56:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-11-28 02:56:44,844 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-11-28 02:56:44,844 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-11-28 02:56:44,844 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-28 02:56:44,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 26 transitions. [2019-11-28 02:56:44,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:44,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:44,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:44,846 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 1, 1, 1] [2019-11-28 02:56:44,846 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:44,846 INFO L794 eck$LassoCheckResult]: Stem: 732#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 727#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 728#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 729#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 730#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 731#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 733#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 748#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 747#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 746#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 745#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 744#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 743#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 742#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 741#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 740#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 739#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 738#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 737#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 736#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 735#L13-3 assume !(main_~n~0 < 10); 726#L17-4 [2019-11-28 02:56:44,847 INFO L796 eck$LassoCheckResult]: Loop: 726#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 734#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 725#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 726#L17-4 [2019-11-28 02:56:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:44,847 INFO L82 PathProgramCache]: Analyzing trace with hash 684734547, now seen corresponding path program 9 times [2019-11-28 02:56:44,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:44,848 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676728505] [2019-11-28 02:56:44,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:56:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:44,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676728505] [2019-11-28 02:56:44,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108215171] [2019-11-28 02:56:44,926 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:56:44,994 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-28 02:56:44,994 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:56:44,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:56:44,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:56:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:56:45,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:56:45,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-28 02:56:45,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749440423] [2019-11-28 02:56:45,008 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-28 02:56:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:45,008 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 10 times [2019-11-28 02:56:45,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:45,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659027191] [2019-11-28 02:56:45,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,017 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:45,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:56:45,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:56:45,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:56:45,113 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. cyclomatic complexity: 4 Second operand 13 states. [2019-11-28 02:56:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:56:45,176 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-11-28 02:56:45,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 02:56:45,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 28 transitions. [2019-11-28 02:56:45,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:45,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 26 states and 28 transitions. [2019-11-28 02:56:45,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-28 02:56:45,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-28 02:56:45,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 28 transitions. [2019-11-28 02:56:45,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-28 02:56:45,179 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-28 02:56:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 28 transitions. [2019-11-28 02:56:45,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 02:56:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 02:56:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-28 02:56:45,182 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-28 02:56:45,182 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-28 02:56:45,182 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-28 02:56:45,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2019-11-28 02:56:45,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-28 02:56:45,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:56:45,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:56:45,184 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1] [2019-11-28 02:56:45,184 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:56:45,185 INFO L794 eck$LassoCheckResult]: Stem: 858#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 853#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~pre1, main_~n~0, main_#t~nondet5, main_#t~mem3, main_#t~short4, main_~i~0, main_~#a~0.base, main_~#a~0.offset;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;call main_~#a~0.base, main_~#a~0.offset := #Ultimate.allocOnStack(40);main_~n~0 := 0; 854#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 855#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 856#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 857#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 859#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 876#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 875#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 874#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 873#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 872#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 871#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 870#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 869#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 868#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 867#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 866#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 865#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 864#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 863#L13-3 assume !!(main_~n~0 < 10);call write~int(main_#t~nondet2, main_~#a~0.base, main_~#a~0.offset + 4 * main_~n~0, 4);havoc main_#t~nondet2; 862#L13-2 main_#t~pre1 := 1 + main_~n~0;main_~n~0 := 1 + main_~n~0;havoc main_#t~pre1; 861#L13-3 assume !(main_~n~0 < 10); 852#L17-4 [2019-11-28 02:56:45,185 INFO L796 eck$LassoCheckResult]: Loop: 852#L17-4 main_#t~short4 := 0 <= main_~i~0 && main_~i~0 < 10; 860#L17 assume main_#t~short4;call main_#t~mem3 := read~int(main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4);main_#t~short4 := main_#t~mem3 >= 0; 851#L17-2 assume !!main_#t~short4;havoc main_#t~mem3;havoc main_#t~short4;main_~i~0 := main_#t~nondet5;havoc main_#t~nondet5;call write~int(0, main_~#a~0.base, main_~#a~0.offset + 4 * main_~i~0, 4); 852#L17-4 [2019-11-28 02:56:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:45,185 INFO L82 PathProgramCache]: Analyzing trace with hash 899905681, now seen corresponding path program 10 times [2019-11-28 02:56:45,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:45,186 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521132768] [2019-11-28 02:56:45,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,214 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:45,214 INFO L82 PathProgramCache]: Analyzing trace with hash 48762, now seen corresponding path program 11 times [2019-11-28 02:56:45,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:45,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592613319] [2019-11-28 02:56:45,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,223 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:45,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:56:45,224 INFO L82 PathProgramCache]: Analyzing trace with hash -95699990, now seen corresponding path program 1 times [2019-11-28 02:56:45,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:56:45,224 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175342649] [2019-11-28 02:56:45,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:56:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:56:45,270 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:56:48,232 WARN L192 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 212 DAG size of output: 148 [2019-11-28 02:56:48,425 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-28 02:56:48,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:48 BoogieIcfgContainer [2019-11-28 02:56:48,463 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:56:48,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:56:48,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:56:48,464 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:56:48,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:40" (3/4) ... [2019-11-28 02:56:48,468 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 02:56:48,528 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:56:48,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:56:48,534 INFO L168 Benchmark]: Toolchain (without parser) took 8843.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.9 MB). Free memory was 956.3 MB in the beginning and 815.0 MB in the end (delta: 141.4 MB). Peak memory consumption was 354.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:48,536 INFO L168 Benchmark]: CDTParser took 0.25 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 02:56:48,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.20 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:48,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:48,538 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:48,538 INFO L168 Benchmark]: RCFGBuilder took 283.05 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:48,541 INFO L168 Benchmark]: BuchiAutomizer took 8072.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 821.9 MB in the end (delta: 286.2 MB). Peak memory consumption was 357.0 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:48,545 INFO L168 Benchmark]: Witness Printer took 69.47 ms. Allocated memory is still 1.2 GB. Free memory was 821.9 MB in the beginning and 815.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:56:48,548 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 284.20 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 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 100.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.15 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 283.05 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8072.37 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 821.9 MB in the end (delta: 286.2 MB). Peak memory consumption was 357.0 MB. Max. memory is 11.5 GB. * Witness Printer took 69.47 ms. Allocated memory is still 1.2 GB. Free memory was 821.9 MB in the beginning and 815.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (10 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * n + 19 and consists of 5 locations. 10 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.9s and 12 iterations. TraceHistogramMax:10. Analysis of lassos took 7.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 11. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 26 states and ocurred in iteration 11. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 80 SDtfs, 65 SDslu, 251 SDs, 0 SdLazy, 188 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU10 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital88 mio100 ax100 hnf100 lsp93 ukn59 mio100 lsp69 div100 bol100 ite100 ukn100 eq152 hnf92 smp100 dnf100 smp100 tf100 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 1 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@2991ab0c=0, NULL=0, \result=0, NULL=1, n=10, i=7, a=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51b1a937=7, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7f3292f7=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dd0b589=0, a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f90f4f7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@6506cb81=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND FALSE !(n < 10) Loop: [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] EXPR a[i] [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...