./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 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 0.1.23-1dbac8b [2018-10-27 06:09:27,350 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:09:27,352 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:09:27,362 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:09:27,363 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:09:27,364 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:09:27,365 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:09:27,366 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:09:27,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:09:27,368 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:09:27,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:09:27,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:09:27,370 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:09:27,371 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:09:27,372 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:09:27,372 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:09:27,373 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:09:27,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:09:27,376 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:09:27,377 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:09:27,378 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:09:27,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:09:27,381 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:09:27,382 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:09:27,382 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:09:27,383 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:09:27,384 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:09:27,384 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:09:27,385 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:09:27,386 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:09:27,386 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:09:27,387 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:09:27,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:09:27,388 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:09:27,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:09:27,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:09:27,389 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-10-27 06:09:27,402 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:09:27,402 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:09:27,403 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:09:27,403 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:09:27,403 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:09:27,404 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:09:27,404 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:09:27,404 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:09:27,404 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:09:27,404 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:09:27,404 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:09:27,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:09:27,405 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 06:09:27,405 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:09:27,405 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:09:27,405 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 06:09:27,405 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:09:27,405 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:09:27,406 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:09:27,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:09:27,406 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 06:09:27,406 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:09:27,406 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:09:27,406 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:09:27,407 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:09:27,407 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:09:27,407 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:09:27,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:09:27,407 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:09:27,407 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:09:27,408 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:09:27,408 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91fda61e05234dbe68b069d372f5d4b0bb73b229 [2018-10-27 06:09:27,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:09:27,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:09:27,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:09:27,451 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:09:27,452 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:09:27,452 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-10-27 06:09:27,509 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/data/b036642be/270938c147994a5586620f675b8c6e0c/FLAG035b457f6 [2018-10-27 06:09:27,868 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:09:27,868 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/sv-benchmarks/c/ssh-simplified/s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-10-27 06:09:27,876 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/data/b036642be/270938c147994a5586620f675b8c6e0c/FLAG035b457f6 [2018-10-27 06:09:27,891 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/data/b036642be/270938c147994a5586620f675b8c6e0c [2018-10-27 06:09:27,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:09:27,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:09:27,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:27,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:09:27,905 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:09:27,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721ef99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:27, skipping insertion in model container [2018-10-27 06:09:27,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:27" (1/1) ... [2018-10-27 06:09:27,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:09:27,941 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:09:28,085 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:28,089 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:09:28,106 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:28,119 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:09:28,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28 WrapperNode [2018-10-27 06:09:28,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:28,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:28,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:09:28,121 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:09:28,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:28,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:09:28,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:09:28,155 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:09:28,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... [2018-10-27 06:09:28,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:09:28,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:09:28,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:09:28,196 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:09:28,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:28,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:09:28,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:09:28,765 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:09:28,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:28 BoogieIcfgContainer [2018-10-27 06:09:28,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:09:28,766 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:09:28,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:09:28,769 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:09:28,772 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:28,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:09:27" (1/3) ... [2018-10-27 06:09:28,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5084a2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:28, skipping insertion in model container [2018-10-27 06:09:28,773 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:28,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:28" (2/3) ... [2018-10-27 06:09:28,774 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5084a2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:28, skipping insertion in model container [2018-10-27 06:09:28,774 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:28,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:28" (3/3) ... [2018-10-27 06:09:28,776 INFO L375 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b_true-unreach-call_false-termination.cil.c [2018-10-27 06:09:28,868 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:09:28,869 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:09:28,869 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:09:28,869 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:09:28,869 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:09:28,870 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:09:28,870 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:09:28,870 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:09:28,871 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:09:28,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2018-10-27 06:09:28,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-10-27 06:09:28,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:28,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:28,932 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:28,932 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-10-27 06:09:28,932 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:09:28,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states. [2018-10-27 06:09:28,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-10-27 06:09:28,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:28,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:28,936 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:09:28,937 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-10-27 06:09:28,945 INFO L793 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 26#L100true [2018-10-27 06:09:28,946 INFO L795 eck$LassoCheckResult]: Loop: 26#L100true assume true; 6#L18-1true assume !false; 9#L19true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 24#L25true assume main_~s__state~0 == 8466; 4#L26true assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 25#L58-1true assume !(main_~s__hit~0 != 0);main_~s__state~0 := 8512; 26#L100true [2018-10-27 06:09:28,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:09:28,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:28,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:29,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:29,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1070887826, now seen corresponding path program 1 times [2018-10-27 06:09:29,054 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:29,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:29,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:29,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 150937044, now seen corresponding path program 1 times [2018-10-27 06:09:29,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:29,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:29,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:29,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:29,208 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-27 06:09:29,249 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:29,250 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:29,250 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:29,250 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:29,251 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:29,251 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:29,251 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:29,251 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:29,252 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration1_Loop [2018-10-27 06:09:29,252 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:29,252 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:29,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,597 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:29,599 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:29,603 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:29,603 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:29,631 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:29,631 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:29,656 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:29,658 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:29,658 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:29,658 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:29,658 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:29,658 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:29,659 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:29,659 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:29,660 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:29,660 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration1_Loop [2018-10-27 06:09:29,660 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:29,660 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:29,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:29,804 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:29,808 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:29,809 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 [2018-10-27 06:09:29,811 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:29,811 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:29,811 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:29,812 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:29,812 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:29,814 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:29,814 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:29,825 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:29,832 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:29,832 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:09:29,834 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:29,834 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:29,835 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:29,836 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8489 Supporting invariants [] [2018-10-27 06:09:29,837 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:29,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:29,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:29,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:30,026 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 [2018-10-27 06:09:30,028 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states. Second operand 4 states. [2018-10-27 06:09:30,197 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states.. Second operand 4 states. Result 72 states and 110 transitions. Complement of second has 8 states. [2018-10-27 06:09:30,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:09:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2018-10-27 06:09:30,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 6 letters. [2018-10-27 06:09:30,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:30,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 8 letters. Loop has 6 letters. [2018-10-27 06:09:30,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:30,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 12 letters. [2018-10-27 06:09:30,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:30,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 110 transitions. [2018-10-27 06:09:30,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-10-27 06:09:30,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 40 states and 59 transitions. [2018-10-27 06:09:30,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-10-27 06:09:30,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-10-27 06:09:30,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 59 transitions. [2018-10-27 06:09:30,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:30,217 INFO L705 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2018-10-27 06:09:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 59 transitions. [2018-10-27 06:09:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 29. [2018-10-27 06:09:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-27 06:09:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 42 transitions. [2018-10-27 06:09:30,248 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 42 transitions. [2018-10-27 06:09:30,248 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 42 transitions. [2018-10-27 06:09:30,248 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:09:30,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 42 transitions. [2018-10-27 06:09:30,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-10-27 06:09:30,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:30,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:30,250 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-10-27 06:09:30,250 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:30,250 INFO L793 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 170#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 171#L100 assume true; 157#L18-1 assume !false; 158#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 164#L25 assume !(main_~s__state~0 == 8466); 167#L30 [2018-10-27 06:09:30,251 INFO L795 eck$LassoCheckResult]: Loop: 167#L30 assume main_~s__state~0 == 8512; 168#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 155#L70 assume main_~tmp___1~0 != 0;main_~s__state~0 := 8466; 156#L100 assume true; 177#L18-1 assume !false; 176#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 175#L25 assume !(main_~s__state~0 == 8466); 167#L30 [2018-10-27 06:09:30,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:30,251 INFO L82 PathProgramCache]: Analyzing trace with hash 889541550, now seen corresponding path program 1 times [2018-10-27 06:09:30,251 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:30,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:30,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:30,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:30,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:30,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:09:30,307 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:09:30,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash -299701082, now seen corresponding path program 1 times [2018-10-27 06:09:30,307 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:30,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:30,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:30,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:30,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:30,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:09:30,331 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:30,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:30,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:30,336 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. cyclomatic complexity: 15 Second operand 3 states. [2018-10-27 06:09:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:30,398 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2018-10-27 06:09:30,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:30,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2018-10-27 06:09:30,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2018-10-27 06:09:30,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 48 transitions. [2018-10-27 06:09:30,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2018-10-27 06:09:30,403 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-10-27 06:09:30,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 48 transitions. [2018-10-27 06:09:30,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:30,403 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 48 transitions. [2018-10-27 06:09:30,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 48 transitions. [2018-10-27 06:09:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-10-27 06:09:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-27 06:09:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2018-10-27 06:09:30,408 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 45 transitions. [2018-10-27 06:09:30,408 INFO L608 BuchiCegarLoop]: Abstraction has 33 states and 45 transitions. [2018-10-27 06:09:30,408 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:09:30,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 45 transitions. [2018-10-27 06:09:30,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2018-10-27 06:09:30,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:30,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:30,411 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:30,412 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:30,412 INFO L793 eck$LassoCheckResult]: Stem: 249#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 246#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 247#L100 assume true; 235#L18-1 assume !false; 236#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 241#L25 assume main_~s__state~0 == 8466; 228#L26 assume !(main_~blastFlag~0 == 0); 229#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 251#L100 assume true; 252#L18-1 assume !false; 253#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 250#L25 assume !(main_~s__state~0 == 8466); 243#L30 [2018-10-27 06:09:30,412 INFO L795 eck$LassoCheckResult]: Loop: 243#L30 assume main_~s__state~0 == 8512; 244#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 230#L70 assume !(main_~tmp___1~0 != 0);main_~s__state~0 := 8640; 232#L100 assume true; 256#L18-1 assume !false; 255#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 254#L25 assume !(main_~s__state~0 == 8466); 243#L30 [2018-10-27 06:09:30,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:30,412 INFO L82 PathProgramCache]: Analyzing trace with hash 421822331, now seen corresponding path program 1 times [2018-10-27 06:09:30,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:30,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:30,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:30,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:30,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:30,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:09:30,428 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:09:30,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:30,429 INFO L82 PathProgramCache]: Analyzing trace with hash -297854040, now seen corresponding path program 1 times [2018-10-27 06:09:30,429 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:30,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:30,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:30,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:30,471 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:30,471 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:30,471 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:30,471 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:30,471 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:30,471 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:30,471 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:30,472 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:30,472 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration3_Loop [2018-10-27 06:09:30,472 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:30,472 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:30,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:30,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:30,778 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 06:09:30,821 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:30,821 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:30,825 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:30,825 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:30,831 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:30,832 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0, ULTIMATE.start_main_~tmp___1~0=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0, ULTIMATE.start_main_~tmp___1~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:30,853 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:30,853 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 06:09:30,910 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:30,910 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:30,958 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:30,961 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:30,961 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:30,961 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:30,961 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:30,961 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:30,961 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:30,961 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:30,962 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:30,962 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration3_Loop [2018-10-27 06:09:30,962 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:30,962 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:30,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:31,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:31,117 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:31,117 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:31,117 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 [2018-10-27 06:09:31,118 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:31,118 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:31,118 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:31,118 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:31,119 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:31,119 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:31,119 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:31,124 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:31,124 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 [2018-10-27 06:09:31,125 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:31,125 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:31,125 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:31,125 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:31,125 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:31,126 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:31,126 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:31,131 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:31,136 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:31,136 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:09:31,136 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:31,137 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:31,137 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:31,137 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2018-10-27 06:09:31,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:31,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:31,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:31,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:31,337 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 [2018-10-27 06:09:31,337 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 45 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-10-27 06:09:31,645 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 45 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 99 states and 144 transitions. Complement of second has 9 states. [2018-10-27 06:09:31,648 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 [2018-10-27 06:09:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2018-10-27 06:09:31,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 12 letters. Loop has 7 letters. [2018-10-27 06:09:31,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:31,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 19 letters. Loop has 7 letters. [2018-10-27 06:09:31,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:31,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 59 transitions. Stem has 12 letters. Loop has 14 letters. [2018-10-27 06:09:31,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:31,651 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 144 transitions. [2018-10-27 06:09:31,654 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2018-10-27 06:09:31,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 89 states and 126 transitions. [2018-10-27 06:09:31,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2018-10-27 06:09:31,657 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 63 [2018-10-27 06:09:31,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 126 transitions. [2018-10-27 06:09:31,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:31,659 INFO L705 BuchiCegarLoop]: Abstraction has 89 states and 126 transitions. [2018-10-27 06:09:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 126 transitions. [2018-10-27 06:09:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 69. [2018-10-27 06:09:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-27 06:09:31,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 94 transitions. [2018-10-27 06:09:31,666 INFO L728 BuchiCegarLoop]: Abstraction has 69 states and 94 transitions. [2018-10-27 06:09:31,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:31,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:31,670 INFO L87 Difference]: Start difference. First operand 69 states and 94 transitions. Second operand 3 states. [2018-10-27 06:09:31,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:31,695 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2018-10-27 06:09:31,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:31,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 98 transitions. [2018-10-27 06:09:31,699 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2018-10-27 06:09:31,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 73 states and 98 transitions. [2018-10-27 06:09:31,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2018-10-27 06:09:31,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2018-10-27 06:09:31,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 98 transitions. [2018-10-27 06:09:31,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:31,700 INFO L705 BuchiCegarLoop]: Abstraction has 73 states and 98 transitions. [2018-10-27 06:09:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 98 transitions. [2018-10-27 06:09:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-27 06:09:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-27 06:09:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 98 transitions. [2018-10-27 06:09:31,707 INFO L728 BuchiCegarLoop]: Abstraction has 73 states and 98 transitions. [2018-10-27 06:09:31,707 INFO L608 BuchiCegarLoop]: Abstraction has 73 states and 98 transitions. [2018-10-27 06:09:31,707 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:09:31,707 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 98 transitions. [2018-10-27 06:09:31,708 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2018-10-27 06:09:31,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:31,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:31,709 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:31,709 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:31,712 INFO L793 eck$LassoCheckResult]: Stem: 612#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 609#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;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; 610#L100 assume true; 637#L18-1 assume !false; 638#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 636#L25 assume main_~s__state~0 == 8466; 628#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 627#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 625#L100 assume true; 623#L18-1 assume !false; 621#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 619#L25 assume !(main_~s__state~0 == 8466); 616#L30 assume main_~s__state~0 == 8512; 606#L31 [2018-10-27 06:09:31,712 INFO L795 eck$LassoCheckResult]: Loop: 606#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 589#L70 assume main_~tmp___1~0 != 0;main_~s__state~0 := 8466; 590#L100 assume true; 594#L18-1 assume !false; 595#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 602#L25 assume main_~s__state~0 == 8466; 614#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 643#L58-1 assume !(main_~s__hit~0 != 0);main_~s__state~0 := 8512; 642#L100 assume true; 641#L18-1 assume !false; 640#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 639#L25 assume !(main_~s__state~0 == 8466); 605#L30 assume main_~s__state~0 == 8512; 606#L31 [2018-10-27 06:09:31,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:31,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1583416964, now seen corresponding path program 1 times [2018-10-27 06:09:31,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:31,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:31,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:31,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:31,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:31,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:31,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:09:31,757 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:09:31,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:31,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1351796327, now seen corresponding path program 1 times [2018-10-27 06:09:31,757 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:31,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:31,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:31,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:31,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:31,823 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:31,824 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:31,824 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:31,824 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:31,824 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:31,824 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:31,824 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:31,824 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:31,825 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration4_Loop [2018-10-27 06:09:31,825 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:31,825 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:31,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:31,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:31,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:31,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:32,005 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:32,005 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:32,008 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:32,009 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:32,020 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:32,020 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:32,040 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:32,040 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/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 [2018-10-27 06:09:32,062 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:32,062 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:32,066 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:32,084 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:32,084 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:32,084 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:32,084 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:32,085 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:32,085 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:32,085 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:32,085 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:32,085 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration4_Loop [2018-10-27 06:09:32,085 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:32,085 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:32,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:32,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:32,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:32,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:32,359 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 06:09:32,561 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:32,561 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:32,561 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 [2018-10-27 06:09:32,562 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:32,562 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:32,562 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:32,563 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:32,563 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:32,563 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:32,563 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:32,564 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:32,565 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 [2018-10-27 06:09:32,565 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:32,566 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:32,566 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:32,567 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:32,568 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:32,568 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:32,568 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:32,572 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:32,576 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:32,576 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:09:32,576 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:32,576 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:32,577 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:32,577 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2018-10-27 06:09:32,577 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:32,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:32,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:32,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:32,630 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 [2018-10-27 06:09:32,630 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 98 transitions. cyclomatic complexity: 29 Second operand 4 states. [2018-10-27 06:09:32,705 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 98 transitions. cyclomatic complexity: 29. Second operand 4 states. Result 155 states and 217 transitions. Complement of second has 4 states. [2018-10-27 06:09:32,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:09:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2018-10-27 06:09:32,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 54 transitions. Stem has 13 letters. Loop has 13 letters. [2018-10-27 06:09:32,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:32,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 54 transitions. Stem has 26 letters. Loop has 13 letters. [2018-10-27 06:09:32,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:32,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 54 transitions. Stem has 13 letters. Loop has 26 letters. [2018-10-27 06:09:32,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:32,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 217 transitions. [2018-10-27 06:09:32,710 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 49 [2018-10-27 06:09:32,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 155 states and 217 transitions. [2018-10-27 06:09:32,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2018-10-27 06:09:32,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2018-10-27 06:09:32,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 217 transitions. [2018-10-27 06:09:32,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:32,713 INFO L705 BuchiCegarLoop]: Abstraction has 155 states and 217 transitions. [2018-10-27 06:09:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states and 217 transitions. [2018-10-27 06:09:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2018-10-27 06:09:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-27 06:09:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 212 transitions. [2018-10-27 06:09:32,725 INFO L728 BuchiCegarLoop]: Abstraction has 151 states and 212 transitions. [2018-10-27 06:09:32,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:32,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:32,726 INFO L87 Difference]: Start difference. First operand 151 states and 212 transitions. Second operand 3 states. [2018-10-27 06:09:32,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:32,756 INFO L93 Difference]: Finished difference Result 198 states and 259 transitions. [2018-10-27 06:09:32,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:32,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 198 states and 259 transitions. [2018-10-27 06:09:32,760 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 63 [2018-10-27 06:09:32,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 198 states to 187 states and 248 transitions. [2018-10-27 06:09:32,763 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 87 [2018-10-27 06:09:32,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2018-10-27 06:09:32,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 248 transitions. [2018-10-27 06:09:32,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:32,764 INFO L705 BuchiCegarLoop]: Abstraction has 187 states and 248 transitions. [2018-10-27 06:09:32,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 248 transitions. [2018-10-27 06:09:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 171. [2018-10-27 06:09:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-27 06:09:32,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 232 transitions. [2018-10-27 06:09:32,775 INFO L728 BuchiCegarLoop]: Abstraction has 171 states and 232 transitions. [2018-10-27 06:09:32,775 INFO L608 BuchiCegarLoop]: Abstraction has 171 states and 232 transitions. [2018-10-27 06:09:32,775 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:09:32,775 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 171 states and 232 transitions. [2018-10-27 06:09:32,777 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 61 [2018-10-27 06:09:32,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:32,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:32,777 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:32,778 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:32,780 INFO L793 eck$LassoCheckResult]: Stem: 1296#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1292#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1293#L100 assume true; 1379#L18-1 assume !false; 1378#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1377#L25 assume main_~s__state~0 == 8466; 1370#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 1369#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 1301#L100 [2018-10-27 06:09:32,781 INFO L795 eck$LassoCheckResult]: Loop: 1301#L100 assume true; 1388#L18-1 assume !false; 1387#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1383#L25 assume !(main_~s__state~0 == 8466); 1363#L30 assume !(main_~s__state~0 == 8512); 1359#L46 assume !(main_~s__state~0 == 8640); 1357#L50 assume main_~s__state~0 == 8656; 1285#L51 assume main_~blastFlag~0 == 2;main_~blastFlag~0 := 3; 1286#L89-1 assume main_~blastFlag~0 == 4;main_~blastFlag~0 := 5; 1298#L93-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8640; 1353#L100 assume true; 1352#L18-1 assume !false; 1351#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1349#L25 assume main_~s__state~0 == 8466; 1350#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 1354#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 1301#L100 [2018-10-27 06:09:32,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:32,781 INFO L82 PathProgramCache]: Analyzing trace with hash 150937042, now seen corresponding path program 1 times [2018-10-27 06:09:32,781 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:32,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:32,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:32,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:32,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:32,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1285792690, now seen corresponding path program 1 times [2018-10-27 06:09:32,792 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:32,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:32,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:32,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:32,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:32,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:09:32,827 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:32,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:32,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:32,828 INFO L87 Difference]: Start difference. First operand 171 states and 232 transitions. cyclomatic complexity: 69 Second operand 3 states. [2018-10-27 06:09:32,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:32,858 INFO L93 Difference]: Finished difference Result 247 states and 331 transitions. [2018-10-27 06:09:32,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:32,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 247 states and 331 transitions. [2018-10-27 06:09:32,861 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 109 [2018-10-27 06:09:32,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 247 states to 247 states and 331 transitions. [2018-10-27 06:09:32,863 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 127 [2018-10-27 06:09:32,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 127 [2018-10-27 06:09:32,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 247 states and 331 transitions. [2018-10-27 06:09:32,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:32,864 INFO L705 BuchiCegarLoop]: Abstraction has 247 states and 331 transitions. [2018-10-27 06:09:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states and 331 transitions. [2018-10-27 06:09:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-27 06:09:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-27 06:09:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 331 transitions. [2018-10-27 06:09:32,876 INFO L728 BuchiCegarLoop]: Abstraction has 247 states and 331 transitions. [2018-10-27 06:09:32,876 INFO L608 BuchiCegarLoop]: Abstraction has 247 states and 331 transitions. [2018-10-27 06:09:32,876 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:09:32,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 331 transitions. [2018-10-27 06:09:32,881 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 109 [2018-10-27 06:09:32,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:32,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:32,882 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:32,882 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:32,882 INFO L793 eck$LassoCheckResult]: Stem: 1726#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1720#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;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; 1721#L100 assume true; 1869#L18-1 assume !false; 1868#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1866#L25 assume main_~s__state~0 == 8466; 1852#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 1851#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 1846#L100 [2018-10-27 06:09:32,882 INFO L795 eck$LassoCheckResult]: Loop: 1846#L100 assume true; 1861#L18-1 assume !false; 1860#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1859#L25 assume !(main_~s__state~0 == 8466); 1858#L30 assume !(main_~s__state~0 == 8512); 1857#L46 assume !(main_~s__state~0 == 8640); 1836#L50 assume main_~s__state~0 == 8656; 1854#L51 assume main_~blastFlag~0 == 2;main_~blastFlag~0 := 3; 1795#L89-1 assume !(main_~blastFlag~0 == 4); 1850#L96 assume !(main_~blastFlag~0 == 5); 1847#L93-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8640; 1844#L100 assume true; 1842#L18-1 assume !false; 1837#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1831#L25 assume main_~s__state~0 == 8466; 1832#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 1791#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 1846#L100 [2018-10-27 06:09:32,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:32,883 INFO L82 PathProgramCache]: Analyzing trace with hash 150937042, now seen corresponding path program 2 times [2018-10-27 06:09:32,883 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:32,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:32,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:32,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:32,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:32,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1455518701, now seen corresponding path program 1 times [2018-10-27 06:09:32,896 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:32,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:32,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:32,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:32,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:32,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:32,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:09:32,925 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:32,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:32,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:32,925 INFO L87 Difference]: Start difference. First operand 247 states and 331 transitions. cyclomatic complexity: 92 Second operand 3 states. [2018-10-27 06:09:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:32,950 INFO L93 Difference]: Finished difference Result 213 states and 260 transitions. [2018-10-27 06:09:32,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:32,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 260 transitions. [2018-10-27 06:09:32,953 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 89 [2018-10-27 06:09:32,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 158 states and 193 transitions. [2018-10-27 06:09:32,954 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 105 [2018-10-27 06:09:32,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2018-10-27 06:09:32,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 193 transitions. [2018-10-27 06:09:32,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:32,955 INFO L705 BuchiCegarLoop]: Abstraction has 158 states and 193 transitions. [2018-10-27 06:09:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 193 transitions. [2018-10-27 06:09:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2018-10-27 06:09:32,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-27 06:09:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2018-10-27 06:09:32,963 INFO L728 BuchiCegarLoop]: Abstraction has 111 states and 137 transitions. [2018-10-27 06:09:32,963 INFO L608 BuchiCegarLoop]: Abstraction has 111 states and 137 transitions. [2018-10-27 06:09:32,963 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-10-27 06:09:32,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 137 transitions. [2018-10-27 06:09:32,964 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2018-10-27 06:09:32,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:32,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:32,965 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:32,965 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:32,965 INFO L793 eck$LassoCheckResult]: Stem: 2180#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2177#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2178#L100 assume true; 2161#L18-1 assume !false; 2162#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2167#L25 assume main_~s__state~0 == 8466; 2183#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 2202#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 2181#L100 [2018-10-27 06:09:32,965 INFO L795 eck$LassoCheckResult]: Loop: 2181#L100 assume true; 2257#L18-1 assume !false; 2256#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2255#L25 assume !(main_~s__state~0 == 8466); 2254#L30 assume !(main_~s__state~0 == 8512); 2182#L46 assume !(main_~s__state~0 == 8640); 2164#L50 assume main_~s__state~0 == 8656; 2165#L51 assume main_~blastFlag~0 == 2;main_~blastFlag~0 := 3; 2169#L89-1 assume !(main_~blastFlag~0 == 4); 2179#L96 assume !(main_~blastFlag~0 == 5); 2163#L93-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8640; 2158#L100 assume true; 2159#L18-1 assume !false; 2160#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2166#L25 assume !(main_~s__state~0 == 8466); 2171#L30 assume !(main_~s__state~0 == 8512); 2172#L46 assume main_~s__state~0 == 8640; 2147#L47 assume !(main_~blastFlag~0 == 3); 2148#L78-1 assume !(main_~s__hit~0 != 0);main_~s__state~0 := 8656; 2181#L100 [2018-10-27 06:09:32,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:32,966 INFO L82 PathProgramCache]: Analyzing trace with hash 150937042, now seen corresponding path program 3 times [2018-10-27 06:09:32,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:32,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:32,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:32,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:32,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:32,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1404451150, now seen corresponding path program 1 times [2018-10-27 06:09:32,976 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:32,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:32,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:32,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:33,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:33,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:09:33,013 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:33,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:33,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:33,014 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. cyclomatic complexity: 32 Second operand 3 states. [2018-10-27 06:09:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:33,063 INFO L93 Difference]: Finished difference Result 123 states and 150 transitions. [2018-10-27 06:09:33,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:33,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 150 transitions. [2018-10-27 06:09:33,065 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 63 [2018-10-27 06:09:33,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 123 states and 150 transitions. [2018-10-27 06:09:33,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2018-10-27 06:09:33,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2018-10-27 06:09:33,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 150 transitions. [2018-10-27 06:09:33,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:33,066 INFO L705 BuchiCegarLoop]: Abstraction has 123 states and 150 transitions. [2018-10-27 06:09:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 150 transitions. [2018-10-27 06:09:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-27 06:09:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-27 06:09:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2018-10-27 06:09:33,069 INFO L728 BuchiCegarLoop]: Abstraction has 123 states and 150 transitions. [2018-10-27 06:09:33,069 INFO L608 BuchiCegarLoop]: Abstraction has 123 states and 150 transitions. [2018-10-27 06:09:33,069 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-10-27 06:09:33,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 123 states and 150 transitions. [2018-10-27 06:09:33,074 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 63 [2018-10-27 06:09:33,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:33,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:33,075 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:33,075 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:33,076 INFO L793 eck$LassoCheckResult]: Stem: 2418#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2415#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;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; 2416#L100 assume true; 2476#L18-1 assume !false; 2475#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2474#L25 assume main_~s__state~0 == 8466; 2469#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 2466#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 2465#L100 [2018-10-27 06:09:33,076 INFO L795 eck$LassoCheckResult]: Loop: 2465#L100 assume true; 2503#L18-1 assume !false; 2502#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2501#L25 assume !(main_~s__state~0 == 8466); 2500#L30 assume !(main_~s__state~0 == 8512); 2499#L46 assume !(main_~s__state~0 == 8640); 2440#L50 assume main_~s__state~0 == 8656; 2441#L51 assume !(main_~blastFlag~0 == 2); 2420#L89-1 assume !(main_~blastFlag~0 == 4); 2417#L96 assume !(main_~blastFlag~0 == 5); 2403#L93-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8640; 2398#L100 assume true; 2399#L18-1 assume !false; 2400#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2406#L25 assume !(main_~s__state~0 == 8466); 2422#L30 assume !(main_~s__state~0 == 8512); 2442#L46 assume main_~s__state~0 == 8640; 2498#L47 assume !(main_~blastFlag~0 == 3); 2504#L78-1 assume !(main_~s__hit~0 != 0);main_~s__state~0 := 8656; 2465#L100 [2018-10-27 06:09:33,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash 150937042, now seen corresponding path program 4 times [2018-10-27 06:09:33,076 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:33,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1146285712, now seen corresponding path program 1 times [2018-10-27 06:09:33,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,089 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:33,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:33,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:33,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:09:33,125 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:09:33,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:33,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:33,125 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. cyclomatic complexity: 34 Second operand 3 states. [2018-10-27 06:09:33,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:33,160 INFO L93 Difference]: Finished difference Result 151 states and 181 transitions. [2018-10-27 06:09:33,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:33,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 151 states and 181 transitions. [2018-10-27 06:09:33,162 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 46 [2018-10-27 06:09:33,163 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 151 states to 146 states and 173 transitions. [2018-10-27 06:09:33,163 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2018-10-27 06:09:33,164 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2018-10-27 06:09:33,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 146 states and 173 transitions. [2018-10-27 06:09:33,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:33,164 INFO L705 BuchiCegarLoop]: Abstraction has 146 states and 173 transitions. [2018-10-27 06:09:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states and 173 transitions. [2018-10-27 06:09:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 115. [2018-10-27 06:09:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-27 06:09:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 139 transitions. [2018-10-27 06:09:33,170 INFO L728 BuchiCegarLoop]: Abstraction has 115 states and 139 transitions. [2018-10-27 06:09:33,170 INFO L608 BuchiCegarLoop]: Abstraction has 115 states and 139 transitions. [2018-10-27 06:09:33,170 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-10-27 06:09:33,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 139 transitions. [2018-10-27 06:09:33,171 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 46 [2018-10-27 06:09:33,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:33,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:33,172 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:33,172 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:33,172 INFO L793 eck$LassoCheckResult]: Stem: 2701#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2697#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2698#L100 assume true; 2756#L18-1 assume !false; 2755#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2753#L25 assume main_~s__state~0 == 8466; 2750#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 2706#L58-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8656; 2684#L100 [2018-10-27 06:09:33,172 INFO L795 eck$LassoCheckResult]: Loop: 2684#L100 assume true; 2679#L18-1 assume !false; 2680#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2779#L25 assume !(main_~s__state~0 == 8466); 2778#L30 assume !(main_~s__state~0 == 8512); 2777#L46 assume !(main_~s__state~0 == 8640); 2685#L50 assume main_~s__state~0 == 8656; 2686#L51 assume !(main_~blastFlag~0 == 2); 2702#L89-1 assume !(main_~blastFlag~0 == 4); 2703#L96 assume !(main_~blastFlag~0 == 5); 2683#L93-1 assume main_~s__hit~0 != 0;main_~s__state~0 := 8640; 2684#L100 [2018-10-27 06:09:33,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,173 INFO L82 PathProgramCache]: Analyzing trace with hash 150937042, now seen corresponding path program 5 times [2018-10-27 06:09:33,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:33,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1957121316, now seen corresponding path program 1 times [2018-10-27 06:09:33,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:33,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1531086741, now seen corresponding path program 1 times [2018-10-27 06:09:33,197 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:33,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:33,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:09:33,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:09:33,327 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:33,327 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:33,327 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:33,327 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:33,328 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:33,328 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:33,328 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:33,328 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:33,328 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration9_Loop [2018-10-27 06:09:33,328 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:33,328 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:33,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:33,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:33,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:33,415 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:33,415 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/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 [2018-10-27 06:09:33,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:33,419 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:33,422 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:33,422 INFO L446 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 /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/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 [2018-10-27 06:09:33,443 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:33,443 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/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 [2018-10-27 06:09:33,476 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:33,476 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:33,496 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:33,498 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:33,498 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:33,498 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:33,498 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:33,498 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:33,498 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:33,498 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:33,499 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:33,499 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b_true-unreach-call_false-termination.cil.c_Iteration9_Loop [2018-10-27 06:09:33,499 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:33,499 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:33,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:33,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:33,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:33,623 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:33,623 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:33,624 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 [2018-10-27 06:09:33,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:33,624 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:33,625 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:33,625 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:09:33,625 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:33,625 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:09:33,626 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:33,627 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:33,627 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 [2018-10-27 06:09:33,627 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:33,628 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:33,628 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:33,628 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:33,628 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:33,628 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:33,629 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:33,640 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:33,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:33,643 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:09:33,643 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:33,643 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:33,643 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:33,643 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2018-10-27 06:09:33,644 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:33,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:33,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:33,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:33,735 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 [2018-10-27 06:09:33,735 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 115 states and 139 transitions. cyclomatic complexity: 32 Second operand 4 states. [2018-10-27 06:09:33,764 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 115 states and 139 transitions. cyclomatic complexity: 32. Second operand 4 states. Result 158 states and 185 transitions. Complement of second has 6 states. [2018-10-27 06:09:33,767 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 [2018-10-27 06:09:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2018-10-27 06:09:33,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 8 letters. Loop has 11 letters. [2018-10-27 06:09:33,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:33,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 19 letters. Loop has 11 letters. [2018-10-27 06:09:33,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:33,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 40 transitions. Stem has 8 letters. Loop has 22 letters. [2018-10-27 06:09:33,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:33,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 185 transitions. [2018-10-27 06:09:33,774 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 46 [2018-10-27 06:09:33,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 115 states and 136 transitions. [2018-10-27 06:09:33,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2018-10-27 06:09:33,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 63 [2018-10-27 06:09:33,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 136 transitions. [2018-10-27 06:09:33,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:33,776 INFO L705 BuchiCegarLoop]: Abstraction has 115 states and 136 transitions. [2018-10-27 06:09:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 136 transitions. [2018-10-27 06:09:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-27 06:09:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-27 06:09:33,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2018-10-27 06:09:33,777 INFO L728 BuchiCegarLoop]: Abstraction has 115 states and 136 transitions. [2018-10-27 06:09:33,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:09:33,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:09:33,778 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand 3 states. [2018-10-27 06:09:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:09:33,799 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2018-10-27 06:09:33,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:09:33,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 110 transitions. [2018-10-27 06:09:33,800 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 24 [2018-10-27 06:09:33,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 72 states and 80 transitions. [2018-10-27 06:09:33,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2018-10-27 06:09:33,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2018-10-27 06:09:33,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 80 transitions. [2018-10-27 06:09:33,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:33,801 INFO L705 BuchiCegarLoop]: Abstraction has 72 states and 80 transitions. [2018-10-27 06:09:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 80 transitions. [2018-10-27 06:09:33,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2018-10-27 06:09:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-27 06:09:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2018-10-27 06:09:33,803 INFO L728 BuchiCegarLoop]: Abstraction has 70 states and 78 transitions. [2018-10-27 06:09:33,803 INFO L608 BuchiCegarLoop]: Abstraction has 70 states and 78 transitions. [2018-10-27 06:09:33,803 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-10-27 06:09:33,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states and 78 transitions. [2018-10-27 06:09:33,804 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 24 [2018-10-27 06:09:33,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:33,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:33,805 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:33,805 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:33,805 INFO L793 eck$LassoCheckResult]: Stem: 3264#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3262#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 3263#L100 assume true; 3294#L18-1 assume !false; 3293#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3292#L25 assume main_~s__state~0 == 8466; 3290#L26 assume main_~blastFlag~0 == 0;main_~blastFlag~0 := 2; 3240#L58-1 assume !(main_~s__hit~0 != 0);main_~s__state~0 := 8512; 3270#L100 assume true; 3246#L18-1 assume !false; 3247#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3254#L25 assume !(main_~s__state~0 == 8466); 3295#L30 assume main_~s__state~0 == 8512; 3258#L31 [2018-10-27 06:09:33,805 INFO L795 eck$LassoCheckResult]: Loop: 3258#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 3241#L70 assume main_~tmp___1~0 != 0;main_~s__state~0 := 8466; 3242#L100 assume true; 3302#L18-1 assume !false; 3300#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3274#L25 assume main_~s__state~0 == 8466; 3237#L26 assume !(main_~blastFlag~0 == 0); 3238#L58-1 assume !(main_~s__hit~0 != 0);main_~s__state~0 := 8512; 3269#L100 assume true; 3301#L18-1 assume !false; 3299#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3298#L25 assume !(main_~s__state~0 == 8466); 3257#L30 assume main_~s__state~0 == 8512; 3258#L31 [2018-10-27 06:09:33,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1526158662, now seen corresponding path program 1 times [2018-10-27 06:09:33,805 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:33,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash 423211035, now seen corresponding path program 1 times [2018-10-27 06:09:33,815 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:33,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:33,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1650194946, now seen corresponding path program 1 times [2018-10-27 06:09:33,823 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:33,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:33,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:33,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:33,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:09:33 BoogieIcfgContainer [2018-10-27 06:09:33,916 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:09:33,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:09:33,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:09:33,917 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:09:33,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:28" (3/4) ... [2018-10-27 06:09:33,920 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-10-27 06:09:33,966 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e0e3eaf0-6406-44a3-8d0e-102f449514bc/bin-2019/uautomizer/witness.graphml [2018-10-27 06:09:33,966 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:09:33,967 INFO L168 Benchmark]: Toolchain (without parser) took 6070.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 957.0 MB in the beginning and 1.1 GB in the end (delta: -105.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:33,968 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:33,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.26 ms. Allocated memory is still 1.0 GB. Free memory was 957.0 MB in the beginning and 946.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:33,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.21 ms. Allocated memory is still 1.0 GB. Free memory was 946.1 MB in the beginning and 943.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:33,969 INFO L168 Benchmark]: Boogie Preprocessor took 40.35 ms. Allocated memory is still 1.0 GB. Free memory is still 943.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:33,969 INFO L168 Benchmark]: RCFGBuilder took 570.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:33,970 INFO L168 Benchmark]: BuchiAutomizer took 5149.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 74.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:33,975 INFO L168 Benchmark]: Witness Printer took 49.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:33,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 219.26 ms. Allocated memory is still 1.0 GB. Free memory was 957.0 MB in the beginning and 946.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.21 ms. Allocated memory is still 1.0 GB. Free memory was 946.1 MB in the beginning and 943.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.35 ms. Allocated memory is still 1.0 GB. Free memory is still 943.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 570.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -197.3 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5149.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 74.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 11.5 GB. * Witness Printer took 49.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 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 12 terminating modules (8 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * s__state + 8489 and consists of 5 locations. One deterministic module has affine ranking function -1 * s__state + 8576 and consists of 5 locations. One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 3 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 70 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.0s and 10 iterations. TraceHistogramMax:2. Analysis of lassos took 3.3s. Construction of modules took 0.6s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 134 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 247 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 4/4 HoareTripleCheckerStatistics: 373 SDtfs, 224 SDslu, 203 SDs, 0 SdLazy, 223 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT1 conc0 concLT1 SILN0 SILU0 SILI1 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq193 hnf92 smp100 dnf189 smp79 tf111 neg93 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 3ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 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@3f279b37=0, \result=0, tmp___1=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@662e24ab=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...