./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/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 0.1.24-cad4683 [2019-10-22 09:02:55,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:55,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:55,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:55,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:55,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:55,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:55,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:55,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:55,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:55,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:55,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:55,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:55,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:55,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:55,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:55,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:55,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:55,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:55,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:55,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:55,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:55,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:55,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:55,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:55,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:55,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:55,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:55,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:55,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:55,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:55,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:55,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:55,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:55,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:55,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:55,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:55,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:55,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:55,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:55,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:55,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 09:02:55,398 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:55,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:55,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:55,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:55,400 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:55,400 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:02:55,400 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:02:55,400 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:02:55,401 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:02:55,401 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:02:55,401 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:02:55,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:55,401 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:55,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:55,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:55,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:55,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:55,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:02:55,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:02:55,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:02:55,402 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:55,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:55,403 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:02:55,403 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:55,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:02:55,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:55,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:55,404 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:02:55,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:55,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:55,404 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:02:55,405 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:02:55,405 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/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 [2019-10-22 09:02:55,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:55,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:55,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:55,442 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:55,442 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:55,443 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/../../sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c [2019-10-22 09:02:55,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/data/3990a8cfe/5a589fbc426d4e4e9d67f916c8c817c6/FLAGa562545f1 [2019-10-22 09:02:55,895 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:55,895 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/sv-benchmarks/c/ssh-simplified/s3_srvr_1b.cil.c [2019-10-22 09:02:55,905 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/data/3990a8cfe/5a589fbc426d4e4e9d67f916c8c817c6/FLAGa562545f1 [2019-10-22 09:02:55,919 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/data/3990a8cfe/5a589fbc426d4e4e9d67f916c8c817c6 [2019-10-22 09:02:55,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:55,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:55,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:55,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:55,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:55,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc43f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:55, skipping insertion in model container [2019-10-22 09:02:55,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:55" (1/1) ... [2019-10-22 09:02:55,940 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:55,960 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:56,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:56,111 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:56,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:56,241 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:56,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56 WrapperNode [2019-10-22 09:02:56,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:56,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:56,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:56,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:56,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:56,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:56,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:56,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:56,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... [2019-10-22 09:02:56,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:56,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:56,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:56,307 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:56,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/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 [2019-10-22 09:02:56,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:56,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:56,546 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:56,546 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 09:02:56,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:56 BoogieIcfgContainer [2019-10-22 09:02:56,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:56,548 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:02:56,549 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:02:56,552 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:02:56,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:56,553 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:02:55" (1/3) ... [2019-10-22 09:02:56,554 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@651bd49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:56, skipping insertion in model container [2019-10-22 09:02:56,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:56,555 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:56" (2/3) ... [2019-10-22 09:02:56,555 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@651bd49f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:56, skipping insertion in model container [2019-10-22 09:02:56,555 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:56,555 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:56" (3/3) ... [2019-10-22 09:02:56,557 INFO L371 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2019-10-22 09:02:56,605 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:02:56,605 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:02:56,605 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:02:56,606 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:56,606 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:56,606 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:02:56,606 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:56,606 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:02:56,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-10-22 09:02:56,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-10-22 09:02:56,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:56,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:56,661 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:56,661 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:56,661 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:02:56,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-10-22 09:02:56,663 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-10-22 09:02:56,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:56,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:56,663 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:02:56,663 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:56,670 INFO L791 eck$LassoCheckResult]: Stem: 13#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 24#L100true [2019-10-22 09:02:56,671 INFO L793 eck$LassoCheckResult]: Loop: 24#L100true assume !false; 8#L19true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 22#L25true assume 8466 == main_~s__state~0; 4#L26true assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 23#L58-1true assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 24#L100true [2019-10-22 09:02:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:56,676 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 09:02:56,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:56,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865945917] [2019-10-22 09:02:56,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:56,765 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash 38329778, now seen corresponding path program 1 times [2019-10-22 09:02:56,767 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:56,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53454608] [2019-10-22 09:02:56,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,767 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:56,780 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:56,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:56,782 INFO L82 PathProgramCache]: Analyzing trace with hash 925833459, now seen corresponding path program 1 times [2019-10-22 09:02:56,782 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:56,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073143506] [2019-10-22 09:02:56,783 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,783 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:56,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:56,795 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:56,870 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:56,871 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:56,871 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:56,871 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:56,871 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:56,871 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:56,871 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:56,872 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:56,872 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2019-10-22 09:02:56,872 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:56,872 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:56,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:56,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:56,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:56,994 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:56,995 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/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 [2019-10-22 09:02:57,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:57,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:57,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:57,012 INFO L440 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_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:57,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:57,032 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/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 [2019-10-22 09:02:57,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:57,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:57,074 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:57,077 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:57,077 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:57,077 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:57,077 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:57,077 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:57,078 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:57,078 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:57,078 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:57,078 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2019-10-22 09:02:57,079 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:57,079 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:57,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,203 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:57,208 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:57,211 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:57,212 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:57,212 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:57,213 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:57,213 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 09:02:57,214 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:57,217 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-10-22 09:02:57,217 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:57,223 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:57,224 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:57,225 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:57,227 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:57,227 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:57,227 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:57,227 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:57,228 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:57,229 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:57,237 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:57,243 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:57,243 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:57,245 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:57,245 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:57,245 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:57,246 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2019-10-22 09:02:57,249 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:57,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:57,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:57,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:57,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:57,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:57,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:57,337 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 09:02:57,338 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states. Second operand 4 states. [2019-10-22 09:02:57,426 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states.. Second operand 4 states. Result 51 states and 83 transitions. Complement of second has 5 states. [2019-10-22 09:02:57,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 09:02:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:02:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2019-10-22 09:02:57,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 1 letters. Loop has 5 letters. [2019-10-22 09:02:57,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:57,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 6 letters. Loop has 5 letters. [2019-10-22 09:02:57,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:57,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 45 transitions. Stem has 1 letters. Loop has 10 letters. [2019-10-22 09:02:57,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:57,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 83 transitions. [2019-10-22 09:02:57,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-10-22 09:02:57,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 37 states and 58 transitions. [2019-10-22 09:02:57,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2019-10-22 09:02:57,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-10-22 09:02:57,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 58 transitions. [2019-10-22 09:02:57,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:57,446 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 58 transitions. [2019-10-22 09:02:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 58 transitions. [2019-10-22 09:02:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-10-22 09:02:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 09:02:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2019-10-22 09:02:57,479 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 56 transitions. [2019-10-22 09:02:57,479 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 56 transitions. [2019-10-22 09:02:57,479 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:02:57,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 56 transitions. [2019-10-22 09:02:57,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-10-22 09:02:57,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:57,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:57,481 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:02:57,481 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:57,482 INFO L791 eck$LassoCheckResult]: Stem: 148#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 149#L100 assume !false; 134#L19 [2019-10-22 09:02:57,482 INFO L793 eck$LassoCheckResult]: Loop: 134#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 135#L25 assume 8466 == main_~s__state~0; 119#L26 assume !(0 == main_~blastFlag~0); 120#L58-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 125#L100 assume !false; 134#L19 [2019-10-22 09:02:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:57,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 09:02:57,483 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:57,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403985014] [2019-10-22 09:02:57,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,483 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:57,490 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:57,491 INFO L82 PathProgramCache]: Analyzing trace with hash 43059010, now seen corresponding path program 1 times [2019-10-22 09:02:57,491 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:57,491 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128776789] [2019-10-22 09:02:57,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,491 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:57,499 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:57,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1363931911, now seen corresponding path program 1 times [2019-10-22 09:02:57,500 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:57,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940120366] [2019-10-22 09:02:57,500 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,500 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:57,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:57,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940120366] [2019-10-22 09:02:57,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:57,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:57,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468880490] [2019-10-22 09:02:57,573 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:57,573 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:57,573 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:57,573 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:57,573 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:57,574 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:57,574 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:57,574 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:57,574 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2019-10-22 09:02:57,574 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:57,574 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:57,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,653 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:57,653 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/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 [2019-10-22 09:02:57,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:57,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:57,671 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:57,672 INFO L440 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_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:57,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:57,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:57,692 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:57,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~blastFlag~0=1} Honda state: {ULTIMATE.start_main_~blastFlag~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:57,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:57,703 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:57,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:57,718 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:57,725 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:57,727 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:57,727 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:57,727 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:57,727 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:57,728 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:57,728 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:57,728 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:57,728 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:57,728 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2019-10-22 09:02:57,728 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:57,728 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:57,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:57,801 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:57,802 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:57,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:57,803 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:57,803 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:57,803 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:57,803 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 09:02:57,803 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:57,804 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-10-22 09:02:57,804 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:57,806 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:57,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:57,814 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:57,815 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:57,815 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:57,815 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 09:02:57,815 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:57,816 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-10-22 09:02:57,816 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:57,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:57,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:57,830 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:57,830 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:57,830 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:57,830 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:57,831 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:57,831 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:57,831 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:57,845 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:57,851 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:57,853 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:57,854 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:57,854 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:57,854 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:57,854 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8561 Supporting invariants [] [2019-10-22 09:02:57,854 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:57,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:57,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:57,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:57,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:57,895 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 [2019-10-22 09:02:57,895 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 56 transitions. cyclomatic complexity: 23 Second operand 5 states. [2019-10-22 09:02:57,954 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 56 transitions. cyclomatic complexity: 23. Second operand 5 states. Result 103 states and 154 transitions. Complement of second has 7 states. [2019-10-22 09:02:57,955 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 [2019-10-22 09:02:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 09:02:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2019-10-22 09:02:57,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 5 letters. [2019-10-22 09:02:57,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:57,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 7 letters. Loop has 5 letters. [2019-10-22 09:02:57,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:57,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 2 letters. Loop has 10 letters. [2019-10-22 09:02:57,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:57,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 154 transitions. [2019-10-22 09:02:57,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-10-22 09:02:57,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 76 states and 120 transitions. [2019-10-22 09:02:57,963 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-10-22 09:02:57,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-10-22 09:02:57,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 120 transitions. [2019-10-22 09:02:57,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:57,964 INFO L688 BuchiCegarLoop]: Abstraction has 76 states and 120 transitions. [2019-10-22 09:02:57,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 120 transitions. [2019-10-22 09:02:57,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2019-10-22 09:02:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 09:02:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2019-10-22 09:02:57,969 INFO L711 BuchiCegarLoop]: Abstraction has 53 states and 85 transitions. [2019-10-22 09:02:57,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:57,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:57,974 INFO L87 Difference]: Start difference. First operand 53 states and 85 transitions. Second operand 3 states. [2019-10-22 09:02:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,008 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2019-10-22 09:02:58,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:58,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 89 states and 127 transitions. [2019-10-22 09:02:58,011 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-10-22 09:02:58,012 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 89 states to 86 states and 124 transitions. [2019-10-22 09:02:58,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2019-10-22 09:02:58,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-10-22 09:02:58,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 124 transitions. [2019-10-22 09:02:58,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:58,013 INFO L688 BuchiCegarLoop]: Abstraction has 86 states and 124 transitions. [2019-10-22 09:02:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 124 transitions. [2019-10-22 09:02:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2019-10-22 09:02:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-10-22 09:02:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 122 transitions. [2019-10-22 09:02:58,020 INFO L711 BuchiCegarLoop]: Abstraction has 84 states and 122 transitions. [2019-10-22 09:02:58,020 INFO L591 BuchiCegarLoop]: Abstraction has 84 states and 122 transitions. [2019-10-22 09:02:58,020 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:02:58,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states and 122 transitions. [2019-10-22 09:02:58,022 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-10-22 09:02:58,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:58,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:58,022 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:02:58,023 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,023 INFO L791 eck$LassoCheckResult]: Stem: 476#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 477#L100 assume !false; 461#L19 [2019-10-22 09:02:58,023 INFO L793 eck$LassoCheckResult]: Loop: 461#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 462#L25 assume !(8466 == main_~s__state~0); 468#L30 assume 8512 == main_~s__state~0; 469#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L70 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 452#L100 assume !false; 461#L19 [2019-10-22 09:02:58,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2019-10-22 09:02:58,024 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,024 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685299675] [2019-10-22 09:02:58,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,031 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:58,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1336146262, now seen corresponding path program 1 times [2019-10-22 09:02:58,032 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907832569] [2019-10-22 09:02:58,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,032 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,041 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash 669100671, now seen corresponding path program 1 times [2019-10-22 09:02:58,042 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,042 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853856369] [2019-10-22 09:02:58,042 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,042 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:58,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853856369] [2019-10-22 09:02:58,056 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:58,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:58,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904233057] [2019-10-22 09:02:58,090 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:58,090 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:58,090 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:58,090 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:58,090 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:58,091 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:58,091 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:58,091 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:58,091 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2019-10-22 09:02:58,091 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:58,091 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:58,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,155 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:58,155 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:58,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:58,164 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:58,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:58,173 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=2, ULTIMATE.start_main_~tmp___1~0=2} Honda state: {ULTIMATE.start_main_#t~nondet1=2, ULTIMATE.start_main_~tmp___1~0=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:58,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:58,187 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:58,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:58,212 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:58,220 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:58,230 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:58,231 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:58,231 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:58,231 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:58,231 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:58,231 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:58,231 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:58,232 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:58,232 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2019-10-22 09:02:58,232 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:58,232 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:58,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,308 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:58,308 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:58,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:58,309 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:58,310 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:58,310 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:58,310 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-10-22 09:02:58,310 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:58,312 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-10-22 09:02:58,313 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:58,323 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:58,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:58,327 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:58,327 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:58,328 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:58,328 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:58,328 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:58,329 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:58,329 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:58,340 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:58,343 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:58,347 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:58,348 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:58,348 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:58,348 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:58,348 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2019-10-22 09:02:58,349 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:58,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:58,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:58,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:58,400 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 [2019-10-22 09:02:58,400 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84 states and 122 transitions. cyclomatic complexity: 44 Second operand 5 states. [2019-10-22 09:02:58,504 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84 states and 122 transitions. cyclomatic complexity: 44. Second operand 5 states. Result 169 states and 231 transitions. Complement of second has 9 states. [2019-10-22 09:02:58,504 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 [2019-10-22 09:02:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 09:02:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2019-10-22 09:02:58,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 09:02:58,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:58,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 8 letters. Loop has 6 letters. [2019-10-22 09:02:58,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:58,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 38 transitions. Stem has 2 letters. Loop has 12 letters. [2019-10-22 09:02:58,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:58,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 169 states and 231 transitions. [2019-10-22 09:02:58,510 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-10-22 09:02:58,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 169 states to 140 states and 195 transitions. [2019-10-22 09:02:58,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2019-10-22 09:02:58,512 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-10-22 09:02:58,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 195 transitions. [2019-10-22 09:02:58,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:58,513 INFO L688 BuchiCegarLoop]: Abstraction has 140 states and 195 transitions. [2019-10-22 09:02:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 195 transitions. [2019-10-22 09:02:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 104. [2019-10-22 09:02:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-10-22 09:02:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2019-10-22 09:02:58,520 INFO L711 BuchiCegarLoop]: Abstraction has 104 states and 147 transitions. [2019-10-22 09:02:58,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:58,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:58,521 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand 3 states. [2019-10-22 09:02:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:58,558 INFO L93 Difference]: Finished difference Result 64 states and 93 transitions. [2019-10-22 09:02:58,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:58,559 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 93 transitions. [2019-10-22 09:02:58,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2019-10-22 09:02:58,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 60 states and 89 transitions. [2019-10-22 09:02:58,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-10-22 09:02:58,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2019-10-22 09:02:58,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 89 transitions. [2019-10-22 09:02:58,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:58,562 INFO L688 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2019-10-22 09:02:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 89 transitions. [2019-10-22 09:02:58,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-10-22 09:02:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 09:02:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 89 transitions. [2019-10-22 09:02:58,566 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2019-10-22 09:02:58,566 INFO L591 BuchiCegarLoop]: Abstraction has 60 states and 89 transitions. [2019-10-22 09:02:58,567 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:02:58,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 89 transitions. [2019-10-22 09:02:58,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2019-10-22 09:02:58,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:58,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:58,568 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,568 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,569 INFO L791 eck$LassoCheckResult]: Stem: 952#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 953#L100 assume !false; 942#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 943#L25 assume 8466 == main_~s__state~0; 924#L26 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 925#L58-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 963#L100 assume !false; 962#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 954#L25 assume !(8466 == main_~s__state~0); 944#L30 [2019-10-22 09:02:58,569 INFO L793 eck$LassoCheckResult]: Loop: 944#L30 assume 8512 == main_~s__state~0; 945#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 926#L70 assume !(0 != main_~tmp___1~0);main_~s__state~0 := 8640; 928#L100 assume !false; 961#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 960#L25 assume !(8466 == main_~s__state~0); 944#L30 [2019-10-22 09:02:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash -775328166, now seen corresponding path program 1 times [2019-10-22 09:02:58,570 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,570 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301603824] [2019-10-22 09:02:58,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,570 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,580 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:58,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1593798804, now seen corresponding path program 1 times [2019-10-22 09:02:58,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790322947] [2019-10-22 09:02:58,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,589 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:58,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1200158765, now seen corresponding path program 1 times [2019-10-22 09:02:58,590 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051384204] [2019-10-22 09:02:58,590 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,590 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,602 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:58,628 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:58,628 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:58,628 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:58,628 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:58,628 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:58,628 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:58,628 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:58,629 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:58,629 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2019-10-22 09:02:58,629 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:58,629 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:58,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:58,696 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 09:02:58,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:58,706 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:58,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:58,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:58,725 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:58,727 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:58,727 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:58,727 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:58,727 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:58,728 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:58,728 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:58,728 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:58,728 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:58,728 INFO L131 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2019-10-22 09:02:58,728 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:58,728 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:58,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:58,774 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:58,774 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:58,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:58,775 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:58,775 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:58,775 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:58,775 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:58,776 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:58,776 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:58,776 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:58,781 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:58,785 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:58,785 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 09:02:58,786 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:58,786 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:58,786 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:58,786 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2019-10-22 09:02:58,787 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:58,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:58,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:58,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:58,835 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 [2019-10-22 09:02:58,835 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 89 transitions. cyclomatic complexity: 33 Second operand 4 states. [2019-10-22 09:02:58,907 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 89 transitions. cyclomatic complexity: 33. Second operand 4 states. Result 182 states and 280 transitions. Complement of second has 9 states. [2019-10-22 09:02:58,908 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 [2019-10-22 09:02:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 09:02:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2019-10-22 09:02:58,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 9 letters. Loop has 6 letters. [2019-10-22 09:02:58,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:58,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 15 letters. Loop has 6 letters. [2019-10-22 09:02:58,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:58,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 54 transitions. Stem has 9 letters. Loop has 12 letters. [2019-10-22 09:02:58,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:58,909 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 280 transitions. [2019-10-22 09:02:58,911 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2019-10-22 09:02:58,913 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 162 states and 244 transitions. [2019-10-22 09:02:58,913 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-10-22 09:02:58,913 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2019-10-22 09:02:58,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 244 transitions. [2019-10-22 09:02:58,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:58,914 INFO L688 BuchiCegarLoop]: Abstraction has 162 states and 244 transitions. [2019-10-22 09:02:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states and 244 transitions. [2019-10-22 09:02:58,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 124. [2019-10-22 09:02:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-22 09:02:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2019-10-22 09:02:58,921 INFO L711 BuchiCegarLoop]: Abstraction has 124 states and 182 transitions. [2019-10-22 09:02:58,921 INFO L591 BuchiCegarLoop]: Abstraction has 124 states and 182 transitions. [2019-10-22 09:02:58,921 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 09:02:58,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 124 states and 182 transitions. [2019-10-22 09:02:58,922 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2019-10-22 09:02:58,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:58,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:58,923 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,923 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:02:58,923 INFO L791 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet0;havoc main_#t~nondet0;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1267#L100 assume !false; 1313#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1314#L25 assume 8466 == main_~s__state~0; 1309#L26 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1307#L58-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 1285#L100 assume !false; 1282#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1272#L25 assume !(8466 == main_~s__state~0); 1273#L30 assume 8512 == main_~s__state~0; 1262#L31 [2019-10-22 09:02:58,923 INFO L793 eck$LassoCheckResult]: Loop: 1262#L31 main_~tmp___1~0 := main_#t~nondet1;havoc main_#t~nondet1; 1243#L70 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 1244#L100 assume !false; 1255#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1256#L25 assume 8466 == main_~s__state~0; 1238#L26 assume !(0 == main_~blastFlag~0); 1239#L58-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 1301#L100 assume !false; 1293#L19 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1289#L25 assume !(8466 == main_~s__state~0); 1261#L30 assume 8512 == main_~s__state~0; 1262#L31 [2019-10-22 09:02:58,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1734630653, now seen corresponding path program 1 times [2019-10-22 09:02:58,924 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,924 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505579402] [2019-10-22 09:02:58,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,932 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1859066665, now seen corresponding path program 1 times [2019-10-22 09:02:58,933 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194674565] [2019-10-22 09:02:58,933 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,941 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:58,942 INFO L82 PathProgramCache]: Analyzing trace with hash -845557157, now seen corresponding path program 1 times [2019-10-22 09:02:58,942 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:58,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254640144] [2019-10-22 09:02:58,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,942 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:58,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:58,953 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:59,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:02:59 BoogieIcfgContainer [2019-10-22 09:02:59,041 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:02:59,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:59,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:59,042 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:59,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:56" (3/4) ... [2019-10-22 09:02:59,046 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 09:02:59,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_52a7c444-0153-4e79-b5ee-ddb13cab33ab/bin/uautomizer/witness.graphml [2019-10-22 09:02:59,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:59,089 INFO L168 Benchmark]: Toolchain (without parser) took 3165.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -146.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:59,089 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:59,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -210.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:59,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:59,090 INFO L168 Benchmark]: Boogie Preprocessor took 27.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:59,091 INFO L168 Benchmark]: RCFGBuilder took 241.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:59,091 INFO L168 Benchmark]: BuchiAutomizer took 2492.91 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:59,091 INFO L168 Benchmark]: Witness Printer took 45.38 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:59,093 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -210.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 241.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2492.91 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: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 11.5 GB. * Witness Printer took 45.38 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * blastFlag + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * s__state + 8561 and consists of 4 locations. One deterministic module has affine ranking function s__state and consists of 5 locations. One deterministic module has affine ranking function -1 * s__state + 8576 and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 124 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.2s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 124 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 143 SDtfs, 145 SDslu, 114 SDs, 0 SdLazy, 176 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf97 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf119 smp94 tf112 neg98 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 30]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18d6222f=0, \result=0, tmp___1=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dbc92dc=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...