./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash 91fda61e05234dbe68b069d372f5d4b0bb73b229 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:26:06,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:26:06,041 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:26:06,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:26:06,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:26:06,065 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:26:06,066 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:26:06,068 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:26:06,070 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:26:06,070 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:26:06,071 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:26:06,072 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:26:06,072 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:26:06,074 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:26:06,075 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:26:06,075 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:26:06,078 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:26:06,082 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:26:06,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:26:06,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:26:06,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:26:06,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:26:06,100 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:26:06,100 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:26:06,104 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:26:06,105 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:26:06,106 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:26:06,106 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:26:06,110 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:26:06,112 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:26:06,113 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:26:06,114 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:26:06,114 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:26:06,114 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:26:06,115 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:26:06,116 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:26:06,116 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 23:26:06,144 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:26:06,144 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:26:06,146 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:26:06,146 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:26:06,146 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:26:06,146 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:26:06,146 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:26:06,147 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:26:06,148 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:26:06,148 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:26:06,148 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:26:06,148 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:26:06,148 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 23:26:06,148 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:26:06,149 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:26:06,149 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 23:26:06,150 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:26:06,150 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:26:06,150 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:26:06,150 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:26:06,150 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 23:26:06,150 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:26:06,151 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:26:06,151 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:26:06,151 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:26:06,151 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:26:06,151 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:26:06,151 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:26:06,153 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:26:06,153 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:26:06,153 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:26:06,155 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:26:06,155 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91fda61e05234dbe68b069d372f5d4b0bb73b229 [2018-11-28 23:26:06,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:26:06,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:26:06,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:26:06,215 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:26:06,216 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:26:06,216 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-11-28 23:26:06,286 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b4bbfd3/bcb012a80a944d76aa1a6de0862f12f8/FLAG14b5be302 [2018-11-28 23:26:06,709 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:26:06,709 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-11-28 23:26:06,717 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b4bbfd3/bcb012a80a944d76aa1a6de0862f12f8/FLAG14b5be302 [2018-11-28 23:26:07,079 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32b4bbfd3/bcb012a80a944d76aa1a6de0862f12f8 [2018-11-28 23:26:07,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:26:07,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:26:07,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:26:07,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:26:07,089 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:26:07,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c4abafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07, skipping insertion in model container [2018-11-28 23:26:07,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:26:07,128 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:26:07,384 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:26:07,391 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:26:07,424 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:26:07,445 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:26:07,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07 WrapperNode [2018-11-28 23:26:07,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:26:07,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:26:07,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:26:07,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:26:07,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:26:07,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:26:07,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:26:07,490 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:26:07,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... [2018-11-28 23:26:07,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:26:07,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:26:07,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:26:07,512 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:26:07,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:07,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:26:07,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:26:07,947 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:26:07,947 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:26:07,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:26:07 BoogieIcfgContainer [2018-11-28 23:26:07,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:26:07,948 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:26:07,949 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:26:07,952 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:26:07,953 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:26:07,953 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:26:07" (1/3) ... [2018-11-28 23:26:07,955 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fdb3971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:26:07, skipping insertion in model container [2018-11-28 23:26:07,955 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:26:07,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:26:07" (2/3) ... [2018-11-28 23:26:07,957 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fdb3971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:26:07, skipping insertion in model container [2018-11-28 23:26:07,957 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:26:07,957 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:26:07" (3/3) ... [2018-11-28 23:26:07,960 INFO L375 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-11-28 23:26:08,077 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:26:08,078 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:26:08,079 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:26:08,079 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:26:08,079 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:26:08,079 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:26:08,079 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:26:08,079 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:26:08,080 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:26:08,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2018-11-28 23:26:08,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-11-28 23:26:08,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:26:08,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:26:08,138 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:26:08,138 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:26:08,138 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:26:08,138 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2018-11-28 23:26:08,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-11-28 23:26:08,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:26:08,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:26:08,142 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:26:08,142 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:26:08,149 INFO L794 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 24#L100true [2018-11-28 23:26:08,150 INFO L796 eck$LassoCheckResult]: Loop: 24#L100true assume !false; 8#L19true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 22#L25true assume 8466 == main_~s__state~0; 4#L26true assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 23#L58-1true assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 24#L100true [2018-11-28 23:26:08,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:08,156 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:26:08,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:08,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:08,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:08,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:08,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:08,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:08,258 INFO L82 PathProgramCache]: Analyzing trace with hash 38329778, now seen corresponding path program 1 times [2018-11-28 23:26:08,258 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:08,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:08,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:08,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:08,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:08,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:08,275 INFO L82 PathProgramCache]: Analyzing trace with hash 925833459, now seen corresponding path program 1 times [2018-11-28 23:26:08,275 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:08,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:08,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:08,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:08,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:08,395 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-11-28 23:26:08,451 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:08,455 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:08,455 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:08,455 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:08,456 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:26:08,456 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:08,456 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:08,456 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:08,456 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration1_Loop [2018-11-28 23:26:08,456 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:08,457 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:08,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:08,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:08,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:08,715 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-28 23:26:08,862 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:08,863 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:08,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:08,868 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:08,879 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:26:08,879 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=7} Honda state: {ULTIMATE.start_main_~s__hit~0=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:08,901 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:08,902 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:08,933 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:26:08,933 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:08,941 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:26:08,966 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:08,966 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:08,966 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:08,966 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:08,966 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:26:08,967 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:08,967 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:08,967 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:08,967 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration1_Loop [2018-11-28 23:26:08,967 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:08,967 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:08,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:08,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:08,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:09,134 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:09,139 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:26:09,141 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:09,143 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:09,143 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:09,144 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:09,144 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:26:09,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:09,147 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:26:09,147 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:09,152 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:26:09,152 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:09,153 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:09,153 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:09,153 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:09,154 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:26:09,154 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:09,155 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:26:09,155 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:09,162 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:26:09,168 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:26:09,168 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:26:09,170 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:26:09,171 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:26:09,171 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:26:09,171 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2018-11-28 23:26:09,173 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:26:09,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:09,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:09,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:26:09,577 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:26:09,579 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states. Second operand 4 states. [2018-11-28 23:26:09,829 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states.. Second operand 4 states. Result 51 states and 83 transitions. Complement of second has 5 states. [2018-11-28 23:26:09,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:26:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:26:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2018-11-28 23:26:09,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 1 letters. Loop has 5 letters. [2018-11-28 23:26:09,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:09,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 6 letters. Loop has 5 letters. [2018-11-28 23:26:09,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:09,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 1 letters. Loop has 10 letters. [2018-11-28 23:26:09,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:09,838 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 83 transitions. [2018-11-28 23:26:09,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-11-28 23:26:09,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 37 states and 58 transitions. [2018-11-28 23:26:09,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-28 23:26:09,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-11-28 23:26:09,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 58 transitions. [2018-11-28 23:26:09,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:26:09,851 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 58 transitions. [2018-11-28 23:26:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 58 transitions. [2018-11-28 23:26:09,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-28 23:26:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 23:26:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2018-11-28 23:26:09,881 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 56 transitions. [2018-11-28 23:26:09,881 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 56 transitions. [2018-11-28 23:26:09,881 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:26:09,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 56 transitions. [2018-11-28 23:26:09,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-11-28 23:26:09,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:26:09,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:26:09,884 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:26:09,884 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:26:09,884 INFO L794 eck$LassoCheckResult]: Stem: 148#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 149#L100 assume !false; 134#L19 [2018-11-28 23:26:09,885 INFO L796 eck$LassoCheckResult]: Loop: 134#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 135#L25 assume 8466 == main_~s__state~0; 119#L26 assume !(0 == main_~blastFlag~0); 120#L58-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 125#L100 assume !false; 134#L19 [2018-11-28 23:26:09,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:09,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:26:09,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:09,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:09,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:09,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:09,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:09,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash 43059010, now seen corresponding path program 1 times [2018-11-28 23:26:09,893 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:09,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:09,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:09,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:09,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:09,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:09,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1363931911, now seen corresponding path program 1 times [2018-11-28 23:26:09,901 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:09,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:09,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:09,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:09,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:26:09,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:26:09,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:26:10,020 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:10,020 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:10,020 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:10,020 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:10,021 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:26:10,021 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:10,021 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:10,021 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:10,021 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration2_Loop [2018-11-28 23:26:10,021 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:10,021 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:10,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:10,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:10,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:10,208 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-28 23:26:10,533 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-28 23:26:10,544 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:10,544 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:10,553 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:10,554 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:10,558 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:26:10,558 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=7} Honda state: {ULTIMATE.start_main_~s__hit~0=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:10,583 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:10,583 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:10,588 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:26:10,588 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0=-8} Honda state: {ULTIMATE.start_main_~blastFlag~0=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:10,611 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:10,611 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:10,637 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:26:10,638 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:10,643 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:26:10,662 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:10,662 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:10,662 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:10,662 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:10,662 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:26:10,662 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:10,663 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:10,663 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:10,663 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration2_Loop [2018-11-28 23:26:10,663 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:10,663 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:10,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:10,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:10,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:10,862 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:10,862 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:26:10,863 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:10,865 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:10,865 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:10,865 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:10,865 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:26:10,865 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:10,866 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:26:10,866 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:10,872 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:26:10,872 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:10,873 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:10,873 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:10,874 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:10,874 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:26:10,874 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:10,875 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:26:10,875 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:10,891 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:26:10,891 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:10,892 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:10,892 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:10,896 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:10,896 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:26:10,896 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:10,897 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:26:10,897 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:10,908 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:26:10,921 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:26:10,921 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:26:10,924 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:26:10,924 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:26:10,924 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:26:10,924 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8561 Supporting invariants [] [2018-11-28 23:26:10,926 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:26:10,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:10,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:10,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:26:11,035 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:26:11,035 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 56 transitions. cyclomatic complexity: 23 Second operand 5 states. [2018-11-28 23:26:11,161 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 56 transitions. cyclomatic complexity: 23. Second operand 5 states. Result 103 states and 154 transitions. Complement of second has 7 states. [2018-11-28 23:26:11,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:26:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:26:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2018-11-28 23:26:11,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 5 letters. [2018-11-28 23:26:11,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:11,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 7 letters. Loop has 5 letters. [2018-11-28 23:26:11,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:11,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 10 letters. [2018-11-28 23:26:11,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:11,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 154 transitions. [2018-11-28 23:26:11,171 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-11-28 23:26:11,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 76 states and 120 transitions. [2018-11-28 23:26:11,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 23:26:11,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 23:26:11,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 120 transitions. [2018-11-28 23:26:11,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:26:11,175 INFO L705 BuchiCegarLoop]: Abstraction has 76 states and 120 transitions. [2018-11-28 23:26:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 120 transitions. [2018-11-28 23:26:11,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2018-11-28 23:26:11,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-28 23:26:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2018-11-28 23:26:11,181 INFO L728 BuchiCegarLoop]: Abstraction has 53 states and 85 transitions. [2018-11-28 23:26:11,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:26:11,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:26:11,187 INFO L87 Difference]: Start difference. First operand 53 states and 85 transitions. Second operand 3 states. [2018-11-28 23:26:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:26:11,245 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2018-11-28 23:26:11,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:26:11,246 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 127 transitions. [2018-11-28 23:26:11,249 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2018-11-28 23:26:11,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 86 states and 124 transitions. [2018-11-28 23:26:11,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2018-11-28 23:26:11,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2018-11-28 23:26:11,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 124 transitions. [2018-11-28 23:26:11,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:26:11,252 INFO L705 BuchiCegarLoop]: Abstraction has 86 states and 124 transitions. [2018-11-28 23:26:11,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 124 transitions. [2018-11-28 23:26:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2018-11-28 23:26:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-28 23:26:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 122 transitions. [2018-11-28 23:26:11,261 INFO L728 BuchiCegarLoop]: Abstraction has 84 states and 122 transitions. [2018-11-28 23:26:11,262 INFO L608 BuchiCegarLoop]: Abstraction has 84 states and 122 transitions. [2018-11-28 23:26:11,262 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:26:11,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states and 122 transitions. [2018-11-28 23:26:11,264 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2018-11-28 23:26:11,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:26:11,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:26:11,266 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:26:11,266 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:26:11,266 INFO L794 eck$LassoCheckResult]: Stem: 476#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 477#L100 assume !false; 461#L19 [2018-11-28 23:26:11,266 INFO L796 eck$LassoCheckResult]: Loop: 461#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 462#L25 assume !(8466 == main_~s__state~0); 468#L30 assume 8512 == main_~s__state~0; 469#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L70 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 452#L100 assume !false; 461#L19 [2018-11-28 23:26:11,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:11,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2018-11-28 23:26:11,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:11,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:11,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:11,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:11,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:11,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:11,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1336146262, now seen corresponding path program 1 times [2018-11-28 23:26:11,276 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:11,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:11,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:11,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:26:11,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:11,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:11,286 INFO L82 PathProgramCache]: Analyzing trace with hash 669100671, now seen corresponding path program 1 times [2018-11-28 23:26:11,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:11,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:11,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:11,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:11,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:26:11,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:26:11,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:26:11,403 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:11,403 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:11,403 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:11,404 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:11,404 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:26:11,404 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:11,404 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:11,405 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:11,405 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration3_Loop [2018-11-28 23:26:11,405 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:11,405 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:11,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:11,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:11,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:11,534 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:11,535 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:11,540 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:11,541 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:11,569 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:26:11,569 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=-8, ULTIMATE.start_main_~tmp___1~0=-8} Honda state: {ULTIMATE.start_main_#t~nondet1=-8, ULTIMATE.start_main_~tmp___1~0=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:11,604 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:11,604 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:11,632 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:26:11,632 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:11,641 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:26:11,658 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:11,659 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:11,659 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:11,659 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:11,659 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:26:11,659 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:11,659 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:11,659 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:11,660 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration3_Loop [2018-11-28 23:26:11,660 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:11,660 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:11,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:11,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:11,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:11,782 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:11,783 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:26:11,785 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:11,789 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:11,790 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:11,790 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:11,790 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:26:11,790 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:11,793 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:26:11,793 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:11,805 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:26:11,806 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:11,806 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:11,807 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:11,807 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:11,807 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:26:11,807 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:11,809 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:26:11,810 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:11,814 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:26:11,818 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:26:11,818 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:26:11,819 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:26:11,819 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:26:11,819 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:26:11,819 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2018-11-28 23:26:11,820 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:26:11,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:11,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:11,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:26:11,927 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:26:11,927 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84 states and 122 transitions. cyclomatic complexity: 44 Second operand 5 states. [2018-11-28 23:26:12,201 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84 states and 122 transitions. cyclomatic complexity: 44. Second operand 5 states. Result 169 states and 231 transitions. Complement of second has 9 states. [2018-11-28 23:26:12,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:26:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:26:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2018-11-28 23:26:12,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 23:26:12,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:12,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-28 23:26:12,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:12,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 12 letters. [2018-11-28 23:26:12,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:12,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 169 states and 231 transitions. [2018-11-28 23:26:12,209 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2018-11-28 23:26:12,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 169 states to 140 states and 195 transitions. [2018-11-28 23:26:12,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2018-11-28 23:26:12,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2018-11-28 23:26:12,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 195 transitions. [2018-11-28 23:26:12,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:26:12,212 INFO L705 BuchiCegarLoop]: Abstraction has 140 states and 195 transitions. [2018-11-28 23:26:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 195 transitions. [2018-11-28 23:26:12,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 104. [2018-11-28 23:26:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-28 23:26:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2018-11-28 23:26:12,224 INFO L728 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2018-11-28 23:26:12,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:26:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:26:12,225 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand 3 states. [2018-11-28 23:26:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:26:12,281 INFO L93 Difference]: Finished difference Result 64 states and 93 transitions. [2018-11-28 23:26:12,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:26:12,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 93 transitions. [2018-11-28 23:26:12,283 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-11-28 23:26:12,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 60 states and 89 transitions. [2018-11-28 23:26:12,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-11-28 23:26:12,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-28 23:26:12,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 89 transitions. [2018-11-28 23:26:12,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:26:12,286 INFO L705 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2018-11-28 23:26:12,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 89 transitions. [2018-11-28 23:26:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-11-28 23:26:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-28 23:26:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 89 transitions. [2018-11-28 23:26:12,291 INFO L728 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2018-11-28 23:26:12,291 INFO L608 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2018-11-28 23:26:12,291 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:26:12,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 89 transitions. [2018-11-28 23:26:12,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-11-28 23:26:12,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:26:12,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:26:12,293 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-28 23:26:12,293 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:26:12,294 INFO L794 eck$LassoCheckResult]: Stem: 952#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 953#L100 assume !false; 942#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 943#L25 assume 8466 == main_~s__state~0; 924#L26 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 925#L58-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 963#L100 assume !false; 962#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 954#L25 assume !(8466 == main_~s__state~0); 944#L30 [2018-11-28 23:26:12,294 INFO L796 eck$LassoCheckResult]: Loop: 944#L30 assume 8512 == main_~s__state~0; 945#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 926#L70 assume !(0 != main_~tmp___1~0);main_~s__state~0 := 8640; 928#L100 assume !false; 961#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 960#L25 assume !(8466 == main_~s__state~0); 944#L30 [2018-11-28 23:26:12,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:12,294 INFO L82 PathProgramCache]: Analyzing trace with hash -775328166, now seen corresponding path program 1 times [2018-11-28 23:26:12,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:12,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:12,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:12,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:12,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1593798804, now seen corresponding path program 1 times [2018-11-28 23:26:12,309 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:12,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:12,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:12,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:12,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1200158765, now seen corresponding path program 1 times [2018-11-28 23:26:12,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:12,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:12,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:12,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,371 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:12,371 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:12,371 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:12,371 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:12,371 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:26:12,371 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:12,371 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:12,372 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:12,372 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration4_Loop [2018-11-28 23:26:12,372 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:12,372 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:12,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:12,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:12,435 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:12,435 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:12,443 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:26:12,444 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:12,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:26:12,469 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:26:12,477 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:26:12,495 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:26:12,495 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:26:12,495 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:26:12,495 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:26:12,495 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:26:12,495 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:26:12,495 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:26:12,495 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:26:12,496 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration4_Loop [2018-11-28 23:26:12,496 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:26:12,496 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:26:12,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:12,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:26:12,552 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:26:12,553 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:26:12,553 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:26:12,554 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:26:12,554 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:26:12,555 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:26:12,556 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:26:12,556 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:26:12,556 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:26:12,557 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:26:12,562 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:26:12,566 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:26:12,566 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:26:12,567 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:26:12,567 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:26:12,567 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:26:12,567 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2018-11-28 23:26:12,570 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:26:12,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:12,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:26:12,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:26:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:26:12,639 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:26:12,640 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 89 transitions. cyclomatic complexity: 33 Second operand 4 states. [2018-11-28 23:26:12,828 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 89 transitions. cyclomatic complexity: 33. Second operand 4 states. Result 182 states and 280 transitions. Complement of second has 9 states. [2018-11-28 23:26:12,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:26:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:26:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2018-11-28 23:26:12,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 23:26:12,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:12,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 15 letters. Loop has 6 letters. [2018-11-28 23:26:12,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:12,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 9 letters. Loop has 12 letters. [2018-11-28 23:26:12,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:26:12,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 280 transitions. [2018-11-28 23:26:12,838 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2018-11-28 23:26:12,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 162 states and 244 transitions. [2018-11-28 23:26:12,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-11-28 23:26:12,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2018-11-28 23:26:12,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 244 transitions. [2018-11-28 23:26:12,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:26:12,842 INFO L705 BuchiCegarLoop]: Abstraction has 162 states and 244 transitions. [2018-11-28 23:26:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states and 244 transitions. [2018-11-28 23:26:12,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 124. [2018-11-28 23:26:12,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-11-28 23:26:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2018-11-28 23:26:12,858 INFO L728 BuchiCegarLoop]: Abstraction has 124 states and 182 transitions. [2018-11-28 23:26:12,858 INFO L608 BuchiCegarLoop]: Abstraction has 124 states and 182 transitions. [2018-11-28 23:26:12,858 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:26:12,858 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 124 states and 182 transitions. [2018-11-28 23:26:12,860 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2018-11-28 23:26:12,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:26:12,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:26:12,862 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:26:12,862 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:26:12,862 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1267#L100 assume !false; 1313#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1314#L25 assume 8466 == main_~s__state~0; 1309#L26 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1307#L58-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 1285#L100 assume !false; 1282#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1272#L25 assume !(8466 == main_~s__state~0); 1273#L30 assume 8512 == main_~s__state~0; 1262#L31 [2018-11-28 23:26:12,862 INFO L796 eck$LassoCheckResult]: Loop: 1262#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 1243#L70 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 1244#L100 assume !false; 1255#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1256#L25 assume 8466 == main_~s__state~0; 1238#L26 assume !(0 == main_~blastFlag~0); 1239#L58-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 1301#L100 assume !false; 1293#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1289#L25 assume !(8466 == main_~s__state~0); 1261#L30 assume 8512 == main_~s__state~0; 1262#L31 [2018-11-28 23:26:12,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:12,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1734630653, now seen corresponding path program 1 times [2018-11-28 23:26:12,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:12,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:12,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:12,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:12,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1859066665, now seen corresponding path program 1 times [2018-11-28 23:26:12,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:12,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:12,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:12,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:26:12,889 INFO L82 PathProgramCache]: Analyzing trace with hash -845557157, now seen corresponding path program 1 times [2018-11-28 23:26:12,889 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:26:12,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:26:12,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:26:12,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:26:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:26:13,369 WARN L180 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2018-11-28 23:26:13,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:26:13 BoogieIcfgContainer [2018-11-28 23:26:13,428 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:26:13,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:26:13,429 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:26:13,430 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:26:13,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:26:07" (3/4) ... [2018-11-28 23:26:13,434 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-28 23:26:13,492 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:26:13,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:26:13,494 INFO L168 Benchmark]: Toolchain (without parser) took 6411.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.4 MB). Free memory was 952.7 MB in the beginning and 1.2 GB in the end (delta: -233.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:26:13,496 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:26:13,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.81 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:26:13,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.71 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:26:13,497 INFO L168 Benchmark]: Boogie Preprocessor took 21.91 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:26:13,499 INFO L168 Benchmark]: RCFGBuilder took 436.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:26:13,500 INFO L168 Benchmark]: BuchiAutomizer took 5479.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -90.5 MB). Peak memory consumption was 316.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:26:13,501 INFO L168 Benchmark]: Witness Printer took 64.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:26:13,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 360.81 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 42.71 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.91 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 436.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5479.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -90.5 MB). Peak memory consumption was 316.8 MB. Max. memory is 11.5 GB. * Witness Printer took 64.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 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 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8561 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function -1 * s__state + 8576 and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 124 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.4s. Construction of modules took 0.6s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 124 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 143 SDtfs, 145 SDslu, 114 SDs, 0 SdLazy, 176 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf97 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf119 smp94 tf112 neg98 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 30]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6f9f60a2=0, \result=0, tmp___1=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f532c9e=1, s__hit=0, blastFlag=2, s__state=8512} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 30]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L10] int s__state ; [L11] int s__hit = __VERIFIER_nondet_int() ; [L12] int blastFlag ; [L13] int tmp___1; [L15] s__state = 8466 [L16] blastFlag = 0 [L18] COND TRUE 1 [L19] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L25] COND TRUE s__state == 8466 [L58] COND TRUE blastFlag == 0 [L59] blastFlag = 2 [L61] COND FALSE !(\read(s__hit)) [L64] s__state = 8512 [L18] COND TRUE 1 [L19] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L25] COND FALSE !(s__state == 8466) [L30] COND TRUE s__state == 8512 Loop: [L69] tmp___1 = __VERIFIER_nondet_int() [L70] COND TRUE \read(tmp___1) [L71] s__state = 8466 [L18] COND TRUE 1 [L19] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L25] COND TRUE s__state == 8466 [L58] COND FALSE !(blastFlag == 0) [L61] COND FALSE !(\read(s__hit)) [L64] s__state = 8512 [L18] COND TRUE 1 [L19] COND FALSE !(s__state <= 8512 && blastFlag > 2) [L25] COND FALSE !(s__state == 8466) [L30] COND TRUE s__state == 8512 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...