./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe54aa6cbf5093caec91497905a5a8a5f126c540 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-31 02:01:26,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 02:01:26,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 02:01:26,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 02:01:26,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 02:01:26,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 02:01:26,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 02:01:26,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 02:01:26,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 02:01:26,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 02:01:26,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 02:01:26,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 02:01:26,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 02:01:26,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 02:01:26,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 02:01:26,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 02:01:26,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 02:01:26,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 02:01:26,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 02:01:26,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 02:01:26,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 02:01:26,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 02:01:26,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 02:01:26,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 02:01:26,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 02:01:26,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 02:01:26,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 02:01:26,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 02:01:26,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 02:01:26,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 02:01:26,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 02:01:26,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 02:01:26,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 02:01:26,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 02:01:26,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 02:01:26,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 02:01:26,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 02:01:26,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 02:01:26,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 02:01:26,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 02:01:26,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 02:01:26,306 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-31 02:01:26,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 02:01:26,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 02:01:26,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 02:01:26,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 02:01:26,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 02:01:26,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 02:01:26,360 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 02:01:26,360 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 02:01:26,360 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 02:01:26,360 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 02:01:26,361 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 02:01:26,361 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 02:01:26,362 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 02:01:26,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 02:01:26,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-31 02:01:26,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 02:01:26,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 02:01:26,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-31 02:01:26,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 02:01:26,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 02:01:26,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 02:01:26,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 02:01:26,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-31 02:01:26,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 02:01:26,364 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 02:01:26,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 02:01:26,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 02:01:26,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 02:01:26,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 02:01:26,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 02:01:26,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 02:01:26,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 02:01:26,367 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 02:01:26,367 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe54aa6cbf5093caec91497905a5a8a5f126c540 [2021-08-31 02:01:26,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 02:01:26,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 02:01:26,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 02:01:26,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 02:01:26,732 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 02:01:26,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-08-31 02:01:26,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d3e0974/8a0013f126b24400a1ceaf6c95aa635b/FLAG3a644ae81 [2021-08-31 02:01:27,286 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 02:01:27,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c [2021-08-31 02:01:27,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d3e0974/8a0013f126b24400a1ceaf6c95aa635b/FLAG3a644ae81 [2021-08-31 02:01:27,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28d3e0974/8a0013f126b24400a1ceaf6c95aa635b [2021-08-31 02:01:27,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 02:01:27,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 02:01:27,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 02:01:27,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 02:01:27,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 02:01:27,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:01:27" (1/1) ... [2021-08-31 02:01:27,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10822fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:27, skipping insertion in model container [2021-08-31 02:01:27,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 02:01:27" (1/1) ... [2021-08-31 02:01:27,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 02:01:27,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 02:01:27,981 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-08-31 02:01:27,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 02:01:27,990 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 02:01:28,006 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1b.cil.c[7766,7779] [2021-08-31 02:01:28,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 02:01:28,050 INFO L208 MainTranslator]: Completed translation [2021-08-31 02:01:28,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28 WrapperNode [2021-08-31 02:01:28,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 02:01:28,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 02:01:28,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 02:01:28,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 02:01:28,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 02:01:28,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 02:01:28,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 02:01:28,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 02:01:28,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 02:01:28,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 02:01:28,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 02:01:28,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 02:01:28,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (1/1) ... [2021-08-31 02:01:28,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:28,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:28,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-31 02:01:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-31 02:01:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-31 02:01:28,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 02:01:28,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 02:01:28,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 02:01:28,394 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-31 02:01:28,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:01:28 BoogieIcfgContainer [2021-08-31 02:01:28,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 02:01:28,397 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 02:01:28,397 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 02:01:28,399 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 02:01:28,400 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:01:28,401 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 02:01:27" (1/3) ... [2021-08-31 02:01:28,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@145ba0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 02:01:28, skipping insertion in model container [2021-08-31 02:01:28,402 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:01:28,402 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 02:01:28" (2/3) ... [2021-08-31 02:01:28,403 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@145ba0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 02:01:28, skipping insertion in model container [2021-08-31 02:01:28,403 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 02:01:28,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 02:01:28" (3/3) ... [2021-08-31 02:01:28,404 INFO L389 chiAutomizerObserver]: Analyzing ICFG s3_srvr_1b.cil.c [2021-08-31 02:01:28,464 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 02:01:28,464 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 02:01:28,467 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 02:01:28,468 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 02:01:28,468 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 02:01:28,468 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 02:01:28,468 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 02:01:28,468 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 02:01:28,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:28,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-31 02:01:28,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:28,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:28,513 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-31 02:01:28,513 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-31 02:01:28,513 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 02:01:28,513 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:28,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-31 02:01:28,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:28,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:28,518 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-31 02:01:28,519 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-31 02:01:28,526 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 13#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 7#L101true [2021-08-31 02:01:28,527 INFO L793 eck$LassoCheckResult]: Loop: 7#L101true assume !false; 23#L20true assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 11#L26true assume 8466 == main_~s__state~0; 8#L27true assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 18#L59-1true assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 7#L101true [2021-08-31 02:01:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:28,538 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-08-31 02:01:28,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:28,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855109543] [2021-08-31 02:01:28,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:28,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:28,645 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:28,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:28,703 INFO L82 PathProgramCache]: Analyzing trace with hash 39284085, now seen corresponding path program 1 times [2021-08-31 02:01:28,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:28,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152321452] [2021-08-31 02:01:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:28,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:28,716 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:28,735 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:28,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:28,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723571, now seen corresponding path program 1 times [2021-08-31 02:01:28,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:28,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53826167] [2021-08-31 02:01:28,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:28,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:28,756 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:28,790 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:28,895 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:28,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:28,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:28,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:28,896 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:01:28,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:28,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:28,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:28,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-08-31 02:01:28,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:28,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:28,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:28,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:28,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:29,036 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:29,037 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:01:29,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:29,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:29,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-31 02:01:29,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:29,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:29,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:01:29,071 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:01:29,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:29,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:29,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:29,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:29,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:29,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-31 02:01:29,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:29,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:29,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:29,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-31 02:01:29,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:01:29,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:29,200 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:01:29,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:29,226 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:29,227 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:29,227 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:29,227 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:29,227 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:01:29,227 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,227 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:29,227 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:29,227 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration1_Loop [2021-08-31 02:01:29,227 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:29,228 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:29,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:29,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:29,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:29,315 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:29,319 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:01:29,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:29,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:29,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-31 02:01:29,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:29,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:29,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:29,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:29,351 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:01:29,351 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:29,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:01:29,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:29,363 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:01:29,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:29,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:29,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:29,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-31 02:01:29,392 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:29,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:29,400 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:29,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:29,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:01:29,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:29,402 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:01:29,402 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:29,429 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:01:29,432 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:01:29,432 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:01:29,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:29,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:29,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-31 02:01:29,457 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:01:29,457 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:01:29,457 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:01:29,458 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~blastFlag~0) = -1*ULTIMATE.start_main_~blastFlag~0 + 1 Supporting invariants [] [2021-08-31 02:01:29,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:29,485 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:01:29,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:29,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:01:29,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:29,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:29,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:01:29,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:29,677 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 [2021-08-31 02:01:29,678 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:29,767 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 84 transitions. Complement of second has 5 states. [2021-08-31 02:01:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-31 02:01:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:29,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2021-08-31 02:01:29,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 5 letters. [2021-08-31 02:01:29,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:29,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 7 letters. Loop has 5 letters. [2021-08-31 02:01:29,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:29,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 46 transitions. Stem has 2 letters. Loop has 10 letters. [2021-08-31 02:01:29,777 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:29,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 84 transitions. [2021-08-31 02:01:29,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-31 02:01:29,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 38 states and 59 transitions. [2021-08-31 02:01:29,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-08-31 02:01:29,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-08-31 02:01:29,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 59 transitions. [2021-08-31 02:01:29,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:29,786 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 59 transitions. [2021-08-31 02:01:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 59 transitions. [2021-08-31 02:01:29,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-08-31 02:01:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2021-08-31 02:01:29,810 INFO L704 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-08-31 02:01:29,811 INFO L587 BuchiCegarLoop]: Abstraction has 36 states and 57 transitions. [2021-08-31 02:01:29,811 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 02:01:29,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 57 transitions. [2021-08-31 02:01:29,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-31 02:01:29,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:29,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:29,812 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-31 02:01:29,812 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-08-31 02:01:29,813 INFO L791 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 127#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 153#L101 assume !false; 129#L20 [2021-08-31 02:01:29,813 INFO L793 eck$LassoCheckResult]: Loop: 129#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 141#L26 assume 8466 == main_~s__state~0; 132#L27 assume !(0 == main_~blastFlag~0); 133#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 128#L101 assume !false; 129#L20 [2021-08-31 02:01:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-08-31 02:01:29,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:29,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520036040] [2021-08-31 02:01:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:29,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:29,823 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:29,832 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:29,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:29,833 INFO L82 PathProgramCache]: Analyzing trace with hash 44013377, now seen corresponding path program 1 times [2021-08-31 02:01:29,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:29,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078620843] [2021-08-31 02:01:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:29,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:29,837 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:29,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:29,841 INFO L82 PathProgramCache]: Analyzing trace with hash 297857786, now seen corresponding path program 1 times [2021-08-31 02:01:29,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:29,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559984730] [2021-08-31 02:01:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:29,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:29,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:29,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559984730] [2021-08-31 02:01:29,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559984730] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:29,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:29,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 02:01:29,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563926008] [2021-08-31 02:01:29,971 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:29,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:29,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:29,972 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:29,972 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:01:29,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:29,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:29,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:29,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-08-31 02:01:29,978 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:29,978 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:29,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:29,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:29,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:30,041 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:30,042 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:01:30,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-31 02:01:30,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:30,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:30,088 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:01:30,089 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=0} Honda state: {ULTIMATE.start_main_~s__hit~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:01:30,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:30,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,157 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:30,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:30,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-31 02:01:30,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:01:30,215 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: [] [2021-08-31 02:01:30,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:30,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:30,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:30,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-31 02:01:30,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:30,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,445 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-31 02:01:30,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:01:30,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:30,510 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:01:30,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:30,580 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:30,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:30,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:30,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:30,580 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:01:30,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:30,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:30,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration2_Loop [2021-08-31 02:01:30,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:30,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:30,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:30,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:30,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:30,676 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:30,677 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:01:30,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,720 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:30,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:30,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:30,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:30,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:01:30,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:30,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:01:30,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:30,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-31 02:01:30,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:01:30,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:30,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,777 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-31 02:01:30,780 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:30,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:30,789 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:30,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:30,789 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-31 02:01:30,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:30,797 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-31 02:01:30,797 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:30,822 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:01:30,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:30,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,866 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-31 02:01:30,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:30,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:30,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:30,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:30,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:01:30,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:30,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:01:30,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:30,916 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:01:30,919 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:01:30,919 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:01:30,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:30,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:30,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:30,944 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:01:30,944 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:01:30,945 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:01:30,945 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8489 Supporting invariants [] [2021-08-31 02:01:30,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-31 02:01:30,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:30,995 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:01:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:31,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:01:31,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:31,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:01:31,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:31,162 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 [2021-08-31 02:01:31,165 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:31,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:31,294 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 57 transitions. cyclomatic complexity: 23. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 155 transitions. Complement of second has 7 states. [2021-08-31 02:01:31,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:01:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-08-31 02:01:31,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 5 letters. [2021-08-31 02:01:31,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:31,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 8 letters. Loop has 5 letters. [2021-08-31 02:01:31,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:31,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 3 letters. Loop has 10 letters. [2021-08-31 02:01:31,310 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:31,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 155 transitions. [2021-08-31 02:01:31,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-31 02:01:31,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 77 states and 121 transitions. [2021-08-31 02:01:31,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-08-31 02:01:31,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-08-31 02:01:31,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 121 transitions. [2021-08-31 02:01:31,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:31,321 INFO L681 BuchiCegarLoop]: Abstraction has 77 states and 121 transitions. [2021-08-31 02:01:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 121 transitions. [2021-08-31 02:01:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2021-08-31 02:01:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 53 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 86 transitions. [2021-08-31 02:01:31,342 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 86 transitions. [2021-08-31 02:01:31,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:31,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:31,349 INFO L87 Difference]: Start difference. First operand 54 states and 86 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:31,419 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2021-08-31 02:01:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:31,420 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 128 transitions. [2021-08-31 02:01:31,427 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-08-31 02:01:31,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 125 transitions. [2021-08-31 02:01:31,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-08-31 02:01:31,431 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2021-08-31 02:01:31,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 125 transitions. [2021-08-31 02:01:31,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:31,432 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 125 transitions. [2021-08-31 02:01:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 125 transitions. [2021-08-31 02:01:31,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-08-31 02:01:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 84 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 123 transitions. [2021-08-31 02:01:31,446 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-08-31 02:01:31,446 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 123 transitions. [2021-08-31 02:01:31,446 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 02:01:31,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 123 transitions. [2021-08-31 02:01:31,448 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-08-31 02:01:31,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:31,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:31,449 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-31 02:01:31,449 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-31 02:01:31,449 INFO L791 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 462#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 488#L101 assume !false; 464#L20 [2021-08-31 02:01:31,449 INFO L793 eck$LassoCheckResult]: Loop: 464#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 476#L26 assume !(8466 == main_~s__state~0); 477#L31 assume 8512 == main_~s__state~0; 480#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 474#L71 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 463#L101 assume !false; 464#L20 [2021-08-31 02:01:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2021-08-31 02:01:31,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:31,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576738688] [2021-08-31 02:01:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:31,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:31,467 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:31,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:31,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1365729718, now seen corresponding path program 1 times [2021-08-31 02:01:31,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:31,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321877270] [2021-08-31 02:01:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:31,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:31,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:31,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:31,510 INFO L82 PathProgramCache]: Analyzing trace with hash 644971805, now seen corresponding path program 1 times [2021-08-31 02:01:31,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:31,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279295429] [2021-08-31 02:01:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:31,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:31,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:31,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279295429] [2021-08-31 02:01:31,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279295429] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:31,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:31,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 02:01:31,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456146360] [2021-08-31 02:01:31,572 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:31,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:31,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:31,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:31,572 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:01:31,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:31,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:31,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:31,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-08-31 02:01:31,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:31,573 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:31,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:31,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:31,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:31,639 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:31,639 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:01:31,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:31,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:31,641 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:31,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-31 02:01:31,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:31,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:31,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:01:31,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Honda state: {ULTIMATE.start_main_#t~nondet8=-1, ULTIMATE.start_main_~tmp___1~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:01:31,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:31,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:31,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:31,729 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:31,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-31 02:01:31,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:31,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:31,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:31,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:31,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:31,786 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:31,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-31 02:01:31,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:01:31,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:31,820 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:01:31,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:31,847 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:31,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:31,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:31,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:31,847 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:01:31,848 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:31,848 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:31,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:31,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration3_Loop [2021-08-31 02:01:31,848 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:31,848 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:31,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:31,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:31,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:31,901 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:31,902 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:01:31,902 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:31,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:31,903 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:31,932 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:31,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:31,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:31,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:31,941 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-31 02:01:31,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:31,943 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-31 02:01:31,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:31,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-31 02:01:31,956 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:01:31,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:31,976 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:31,976 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:31,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-31 02:01:31,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:31,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:31,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:31,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:31,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:01:31,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:31,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:01:31,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:32,003 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:01:32,005 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-31 02:01:32,005 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:01:32,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:32,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:32,006 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:32,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-31 02:01:32,009 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:01:32,009 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:01:32,009 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:01:32,009 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-08-31 02:01:32,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:32,028 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:01:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:32,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:01:32,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:32,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:01:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:32,118 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 [2021-08-31 02:01:32,119 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,207 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 123 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 170 states and 232 transitions. Complement of second has 9 states. [2021-08-31 02:01:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 02:01:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-08-31 02:01:32,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 6 letters. [2021-08-31 02:01:32,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:32,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 9 letters. Loop has 6 letters. [2021-08-31 02:01:32,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:32,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 3 letters. Loop has 12 letters. [2021-08-31 02:01:32,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:32,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 170 states and 232 transitions. [2021-08-31 02:01:32,211 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-08-31 02:01:32,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 170 states to 141 states and 196 transitions. [2021-08-31 02:01:32,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 47 [2021-08-31 02:01:32,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-08-31 02:01:32,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 196 transitions. [2021-08-31 02:01:32,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:32,212 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 196 transitions. [2021-08-31 02:01:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 196 transitions. [2021-08-31 02:01:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 105. [2021-08-31 02:01:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 104 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 148 transitions. [2021-08-31 02:01:32,217 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2021-08-31 02:01:32,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:32,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:32,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:32,218 INFO L87 Difference]: Start difference. First operand 105 states and 148 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:32,248 INFO L93 Difference]: Finished difference Result 65 states and 94 transitions. [2021-08-31 02:01:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:32,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 94 transitions. [2021-08-31 02:01:32,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-08-31 02:01:32,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 61 states and 90 transitions. [2021-08-31 02:01:32,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-08-31 02:01:32,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-08-31 02:01:32,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 90 transitions. [2021-08-31 02:01:32,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:32,251 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-08-31 02:01:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 90 transitions. [2021-08-31 02:01:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-08-31 02:01:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 60 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 90 transitions. [2021-08-31 02:01:32,264 INFO L704 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-08-31 02:01:32,264 INFO L587 BuchiCegarLoop]: Abstraction has 61 states and 90 transitions. [2021-08-31 02:01:32,264 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 02:01:32,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states and 90 transitions. [2021-08-31 02:01:32,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-08-31 02:01:32,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:32,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:32,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:32,267 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-31 02:01:32,267 INFO L791 eck$LassoCheckResult]: Stem: 943#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 944#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 945#L101 assume !false; 946#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 962#L26 assume 8466 == main_~s__state~0; 963#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 986#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 982#L101 assume !false; 981#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 960#L26 assume !(8466 == main_~s__state~0); 961#L31 [2021-08-31 02:01:32,267 INFO L793 eck$LassoCheckResult]: Loop: 961#L31 assume 8512 == main_~s__state~0; 964#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 955#L71 assume !(0 != main_~tmp___1~0);main_~s__state~0 := 8640; 957#L101 assume !false; 977#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 978#L26 assume !(8466 == main_~s__state~0); 961#L31 [2021-08-31 02:01:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:32,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1523382593, now seen corresponding path program 1 times [2021-08-31 02:01:32,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:32,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228259076] [2021-08-31 02:01:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:32,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:32,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:32,300 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:32,316 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:32,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:32,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1623382260, now seen corresponding path program 1 times [2021-08-31 02:01:32,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:32,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833950496] [2021-08-31 02:01:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:32,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:32,320 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:32,322 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:32,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:32,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1141286606, now seen corresponding path program 1 times [2021-08-31 02:01:32,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:32,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731729364] [2021-08-31 02:01:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:32,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:32,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:32,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731729364] [2021-08-31 02:01:32,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731729364] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:32,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:32,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 02:01:32,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599893695] [2021-08-31 02:01:32,388 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:32,388 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:32,388 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:32,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:32,388 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:01:32,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:32,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:32,389 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:32,389 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-08-31 02:01:32,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:32,389 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:32,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:32,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:32,421 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:32,422 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:01:32,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:32,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:32,423 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:32,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-31 02:01:32,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:32,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:32,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:32,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:32,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:32,477 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:32,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:01:32,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:32,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-31 02:01:32,512 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:01:32,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:32,538 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:32,538 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:32,538 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:32,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:32,538 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:01:32,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:32,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:32,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:32,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration4_Loop [2021-08-31 02:01:32,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:32,538 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:32,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:32,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:32,570 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:32,571 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:01:32,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:32,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:32,572 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:32,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-31 02:01:32,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:32,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:32,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:32,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:32,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:01:32,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:32,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:01:32,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:32,588 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:01:32,590 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 02:01:32,590 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:01:32,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:32,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:32,591 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:32,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-31 02:01:32,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:01:32,593 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:01:32,593 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:01:32,593 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = -1*ULTIMATE.start_main_~s__state~0 + 8576 Supporting invariants [] [2021-08-31 02:01:32,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:32,611 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:01:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:32,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:01:32,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:32,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:01:32,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:32,707 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 [2021-08-31 02:01:32,707 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-08-31 02:01:32,827 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 61 states and 90 transitions. cyclomatic complexity: 33. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 183 states and 281 transitions. Complement of second has 9 states. [2021-08-31 02:01:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 02:01:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2021-08-31 02:01:32,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 6 letters. [2021-08-31 02:01:32,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:32,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 16 letters. Loop has 6 letters. [2021-08-31 02:01:32,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:32,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 55 transitions. Stem has 10 letters. Loop has 12 letters. [2021-08-31 02:01:32,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:32,831 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 281 transitions. [2021-08-31 02:01:32,838 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-08-31 02:01:32,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 163 states and 245 transitions. [2021-08-31 02:01:32,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2021-08-31 02:01:32,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-08-31 02:01:32,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 245 transitions. [2021-08-31 02:01:32,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:32,842 INFO L681 BuchiCegarLoop]: Abstraction has 163 states and 245 transitions. [2021-08-31 02:01:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states and 245 transitions. [2021-08-31 02:01:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 125. [2021-08-31 02:01:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.464) internal successors, (183), 124 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-08-31 02:01:32,853 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-08-31 02:01:32,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:32,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:32,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:32,853 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:32,891 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2021-08-31 02:01:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:32,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 223 transitions. [2021-08-31 02:01:32,894 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-08-31 02:01:32,895 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 154 states and 211 transitions. [2021-08-31 02:01:32,895 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2021-08-31 02:01:32,895 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-08-31 02:01:32,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 154 states and 211 transitions. [2021-08-31 02:01:32,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:32,896 INFO L681 BuchiCegarLoop]: Abstraction has 154 states and 211 transitions. [2021-08-31 02:01:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states and 211 transitions. [2021-08-31 02:01:32,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-08-31 02:01:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 134 states have (on average 1.4253731343283582) internal successors, (191), 133 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 191 transitions. [2021-08-31 02:01:32,899 INFO L704 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-08-31 02:01:32,900 INFO L587 BuchiCegarLoop]: Abstraction has 134 states and 191 transitions. [2021-08-31 02:01:32,900 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-31 02:01:32,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 134 states and 191 transitions. [2021-08-31 02:01:32,901 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 35 [2021-08-31 02:01:32,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:32,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:32,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:32,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:32,902 INFO L791 eck$LassoCheckResult]: Stem: 1548#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1549#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1577#L101 assume !false; 1674#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1672#L26 assume 8466 == main_~s__state~0; 1560#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1561#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1554#L101 [2021-08-31 02:01:32,902 INFO L793 eck$LassoCheckResult]: Loop: 1554#L101 assume !false; 1555#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1573#L26 assume !(8466 == main_~s__state~0); 1574#L31 assume !(8512 == main_~s__state~0); 1550#L47 assume !(8640 == main_~s__state~0); 1551#L51 assume 8656 == main_~s__state~0; 1562#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1581#L90-1 assume 4 == main_~blastFlag~0;main_~blastFlag~0 := 5; 1583#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1566#L101 assume !false; 1680#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1678#L26 assume 8466 == main_~s__state~0; 1614#L27 assume !(0 == main_~blastFlag~0); 1588#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1554#L101 [2021-08-31 02:01:32,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:32,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 1 times [2021-08-31 02:01:32,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:32,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195254351] [2021-08-31 02:01:32,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:32,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:32,913 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:32,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:32,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1982564596, now seen corresponding path program 1 times [2021-08-31 02:01:32,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:32,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075457626] [2021-08-31 02:01:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:32,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:32,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:32,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:32,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075457626] [2021-08-31 02:01:32,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075457626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:32,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:32,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 02:01:32,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582852155] [2021-08-31 02:01:32,934 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 02:01:32,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:32,935 INFO L87 Difference]: Start difference. First operand 134 states and 191 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:32,988 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2021-08-31 02:01:32,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:32,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 182 states and 254 transitions. [2021-08-31 02:01:32,995 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-08-31 02:01:32,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 182 states to 182 states and 254 transitions. [2021-08-31 02:01:32,997 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 70 [2021-08-31 02:01:32,997 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2021-08-31 02:01:32,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2021-08-31 02:01:32,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:32,998 INFO L681 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-08-31 02:01:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2021-08-31 02:01:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-08-31 02:01:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 182 states have (on average 1.3956043956043955) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-08-31 02:01:33,005 INFO L704 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-08-31 02:01:33,006 INFO L587 BuchiCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-08-31 02:01:33,006 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-31 02:01:33,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 182 states and 254 transitions. [2021-08-31 02:01:33,007 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 59 [2021-08-31 02:01:33,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:33,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:33,008 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,008 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,008 INFO L791 eck$LassoCheckResult]: Stem: 1874#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1875#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 1909#L101 assume !false; 1975#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1976#L26 assume 8466 == main_~s__state~0; 1970#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 1967#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L101 [2021-08-31 02:01:33,008 INFO L793 eck$LassoCheckResult]: Loop: 1940#L101 assume !false; 1987#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1985#L26 assume !(8466 == main_~s__state~0); 1983#L31 assume !(8512 == main_~s__state~0); 1980#L47 assume !(8640 == main_~s__state~0); 1880#L51 assume 8656 == main_~s__state~0; 1881#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 1900#L90-1 assume !(4 == main_~blastFlag~0); 1901#L97 assume !(5 == main_~blastFlag~0); 1907#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 1876#L101 assume !false; 1877#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 1999#L26 assume 8466 == main_~s__state~0; 1997#L27 assume !(0 == main_~blastFlag~0); 1994#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 1940#L101 [2021-08-31 02:01:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 2 times [2021-08-31 02:01:33,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698063918] [2021-08-31 02:01:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,022 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash 862619384, now seen corresponding path program 1 times [2021-08-31 02:01:33,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148704506] [2021-08-31 02:01:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:33,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:33,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148704506] [2021-08-31 02:01:33,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148704506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:33,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:33,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 02:01:33,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528394625] [2021-08-31 02:01:33,070 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 02:01:33,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:33,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:33,071 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:33,112 INFO L93 Difference]: Finished difference Result 157 states and 202 transitions. [2021-08-31 02:01:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:33,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 202 transitions. [2021-08-31 02:01:33,115 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-31 02:01:33,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 111 states and 141 transitions. [2021-08-31 02:01:33,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-08-31 02:01:33,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-08-31 02:01:33,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 141 transitions. [2021-08-31 02:01:33,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:33,116 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 141 transitions. [2021-08-31 02:01:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 141 transitions. [2021-08-31 02:01:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2021-08-31 02:01:33,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 105 states have (on average 1.276190476190476) internal successors, (134), 104 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-08-31 02:01:33,118 INFO L704 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-08-31 02:01:33,118 INFO L587 BuchiCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-08-31 02:01:33,119 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-31 02:01:33,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 134 transitions. [2021-08-31 02:01:33,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 45 [2021-08-31 02:01:33,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:33,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:33,120 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,120 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,120 INFO L791 eck$LassoCheckResult]: Stem: 2215#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2216#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2237#L101 assume !false; 2286#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2287#L26 assume 8466 == main_~s__state~0; 2274#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2269#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2250#L101 [2021-08-31 02:01:33,120 INFO L793 eck$LassoCheckResult]: Loop: 2250#L101 assume !false; 2309#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2308#L26 assume !(8466 == main_~s__state~0); 2307#L31 assume !(8512 == main_~s__state~0); 2282#L47 assume !(8640 == main_~s__state~0); 2281#L51 assume 8656 == main_~s__state~0; 2280#L52 assume 2 == main_~blastFlag~0;main_~blastFlag~0 := 3; 2240#L90-1 assume !(4 == main_~blastFlag~0); 2241#L97 assume !(5 == main_~blastFlag~0); 2244#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2245#L101 assume !false; 2252#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2231#L26 assume !(8466 == main_~s__state~0); 2232#L31 assume !(8512 == main_~s__state~0); 2234#L47 assume 8640 == main_~s__state~0; 2255#L48 assume !(3 == main_~blastFlag~0); 2249#L79-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2250#L101 [2021-08-31 02:01:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 3 times [2021-08-31 02:01:33,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626339117] [2021-08-31 02:01:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,126 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,132 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:33,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,132 INFO L82 PathProgramCache]: Analyzing trace with hash 49895967, now seen corresponding path program 1 times [2021-08-31 02:01:33,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754824683] [2021-08-31 02:01:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:33,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:33,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754824683] [2021-08-31 02:01:33,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754824683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:33,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:33,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 02:01:33,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760477724] [2021-08-31 02:01:33,145 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 02:01:33,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:33,146 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:33,180 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2021-08-31 02:01:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:33,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 146 transitions. [2021-08-31 02:01:33,182 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-08-31 02:01:33,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 146 transitions. [2021-08-31 02:01:33,183 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2021-08-31 02:01:33,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-08-31 02:01:33,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 146 transitions. [2021-08-31 02:01:33,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:33,183 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-08-31 02:01:33,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 146 transitions. [2021-08-31 02:01:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-08-31 02:01:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 116 states have (on average 1.2586206896551724) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-08-31 02:01:33,185 INFO L704 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-08-31 02:01:33,185 INFO L587 BuchiCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-08-31 02:01:33,185 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-08-31 02:01:33,186 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 146 transitions. [2021-08-31 02:01:33,186 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 56 [2021-08-31 02:01:33,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:33,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:33,187 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,187 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,187 INFO L791 eck$LassoCheckResult]: Stem: 2442#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2443#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_~s__state~0, main_~s__hit~0, main_~blastFlag~0, main_~tmp___1~0;havoc main_~s__state~0;main_~s__hit~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2446#L101 assume !false; 2447#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2460#L26 assume 8466 == main_~s__state~0; 2461#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2501#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2494#L101 [2021-08-31 02:01:33,187 INFO L793 eck$LassoCheckResult]: Loop: 2494#L101 assume !false; 2539#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2538#L26 assume !(8466 == main_~s__state~0); 2537#L31 assume !(8512 == main_~s__state~0); 2535#L47 assume !(8640 == main_~s__state~0); 2532#L51 assume 8656 == main_~s__state~0; 2509#L52 assume !(2 == main_~blastFlag~0); 2466#L90-1 assume !(4 == main_~blastFlag~0); 2467#L97 assume !(5 == main_~blastFlag~0); 2544#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2526#L101 assume !false; 2543#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2542#L26 assume !(8466 == main_~s__state~0); 2540#L31 assume !(8512 == main_~s__state~0); 2515#L47 assume 8640 == main_~s__state~0; 2534#L48 assume !(3 == main_~blastFlag~0); 2541#L79-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8656; 2494#L101 [2021-08-31 02:01:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 4 times [2021-08-31 02:01:33,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090535254] [2021-08-31 02:01:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,188 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,192 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:33,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,198 INFO L82 PathProgramCache]: Analyzing trace with hash 750960545, now seen corresponding path program 1 times [2021-08-31 02:01:33,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895121433] [2021-08-31 02:01:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:33,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:33,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895121433] [2021-08-31 02:01:33,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895121433] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:33,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:33,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-31 02:01:33,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745689292] [2021-08-31 02:01:33,209 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 02:01:33,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:33,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:33,210 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. cyclomatic complexity: 38 Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:33,245 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2021-08-31 02:01:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:33,247 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 175 transitions. [2021-08-31 02:01:33,248 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-08-31 02:01:33,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 137 states and 167 transitions. [2021-08-31 02:01:33,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2021-08-31 02:01:33,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2021-08-31 02:01:33,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 137 states and 167 transitions. [2021-08-31 02:01:33,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:33,249 INFO L681 BuchiCegarLoop]: Abstraction has 137 states and 167 transitions. [2021-08-31 02:01:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states and 167 transitions. [2021-08-31 02:01:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-08-31 02:01:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 108 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 136 transitions. [2021-08-31 02:01:33,251 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-08-31 02:01:33,251 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 136 transitions. [2021-08-31 02:01:33,251 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-08-31 02:01:33,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 136 transitions. [2021-08-31 02:01:33,252 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-08-31 02:01:33,252 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:33,252 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:33,253 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,253 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:33,253 INFO L791 eck$LassoCheckResult]: Stem: 2706#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2707#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 2729#L101 assume !false; 2782#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2783#L26 assume 8466 == main_~s__state~0; 2777#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 2774#L59-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8656; 2710#L101 [2021-08-31 02:01:33,253 INFO L793 eck$LassoCheckResult]: Loop: 2710#L101 assume !false; 2711#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 2723#L26 assume !(8466 == main_~s__state~0); 2724#L31 assume !(8512 == main_~s__state~0); 2726#L47 assume !(8640 == main_~s__state~0); 2746#L51 assume 8656 == main_~s__state~0; 2810#L52 assume !(2 == main_~blastFlag~0); 2731#L90-1 assume !(4 == main_~blastFlag~0); 2732#L97 assume !(5 == main_~blastFlag~0); 2735#L94-1 assume 0 != main_~s__hit~0;main_~s__state~0 := 8640; 2710#L101 [2021-08-31 02:01:33,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1810723569, now seen corresponding path program 5 times [2021-08-31 02:01:33,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443551186] [2021-08-31 02:01:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,258 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,263 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1947655960, now seen corresponding path program 1 times [2021-08-31 02:01:33,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025041208] [2021-08-31 02:01:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,271 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:33,274 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:33,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,274 INFO L82 PathProgramCache]: Analyzing trace with hash 163931656, now seen corresponding path program 1 times [2021-08-31 02:01:33,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:33,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436199655] [2021-08-31 02:01:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:33,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:33,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:33,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 02:01:33,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436199655] [2021-08-31 02:01:33,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436199655] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 02:01:33,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 02:01:33,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 02:01:33,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732812780] [2021-08-31 02:01:33,354 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:33,354 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:33,354 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:33,354 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:33,354 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 02:01:33,354 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,354 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:33,354 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:33,354 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-08-31 02:01:33,354 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:33,354 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:33,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:33,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:33,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:33,427 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:33,428 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 02:01:33,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:33,429 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:33,437 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:33,437 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:33,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-31 02:01:33,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 02:01:33,469 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~s__hit~0=4} Honda state: {ULTIMATE.start_main_~s__hit~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 02:01:33,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:33,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:33,497 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:33,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-31 02:01:33,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 02:01:33,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:33,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-08-31 02:01:33,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:33,529 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:33,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-31 02:01:33,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 02:01:33,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 02:01:33,576 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 02:01:33,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:33,595 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 02:01:33,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 02:01:33,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 02:01:33,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 02:01:33,595 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 02:01:33,596 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 02:01:33,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 02:01:33,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: s3_srvr_1b.cil.c_Iteration9_Loop [2021-08-31 02:01:33,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 02:01:33,596 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 02:01:33,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:33,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:33,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 02:01:33,676 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 02:01:33,677 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 02:01:33,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:33,678 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:33,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-31 02:01:33,682 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:33,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:33,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:33,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:33,691 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-31 02:01:33,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:33,694 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-31 02:01:33,694 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:33,707 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 02:01:33,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:33,731 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:33,732 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:33,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-31 02:01:33,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 02:01:33,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 02:01:33,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 02:01:33,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 02:01:33,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 02:01:33,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 02:01:33,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 02:01:33,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 02:01:33,758 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 02:01:33,760 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-31 02:01:33,760 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-31 02:01:33,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 02:01:33,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 02:01:33,765 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 02:01:33,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-08-31 02:01:33,768 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 02:01:33,768 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 02:01:33,768 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 02:01:33,768 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~s__state~0) = 1*ULTIMATE.start_main_~s__state~0 Supporting invariants [] [2021-08-31 02:01:33,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:33,799 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 02:01:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:33,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 02:01:33,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:33,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-08-31 02:01:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 02:01:33,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-31 02:01:33,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 02:01:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 02:01:33,917 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 [2021-08-31 02:01:33,917 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,964 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 136 transitions. cyclomatic complexity: 36. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 148 states and 178 transitions. Complement of second has 6 states. [2021-08-31 02:01:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-31 02:01:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2021-08-31 02:01:33,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 10 letters. [2021-08-31 02:01:33,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:33,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 17 letters. Loop has 10 letters. [2021-08-31 02:01:33,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:33,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 38 transitions. Stem has 7 letters. Loop has 20 letters. [2021-08-31 02:01:33,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 02:01:33,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 178 transitions. [2021-08-31 02:01:33,966 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 41 [2021-08-31 02:01:33,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 109 states and 132 transitions. [2021-08-31 02:01:33,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-08-31 02:01:33,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-08-31 02:01:33,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 132 transitions. [2021-08-31 02:01:33,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:33,967 INFO L681 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-08-31 02:01:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 132 transitions. [2021-08-31 02:01:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-08-31 02:01:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 108 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2021-08-31 02:01:33,969 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 132 transitions. [2021-08-31 02:01:33,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 02:01:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-31 02:01:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-31 02:01:33,969 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 02:01:34,003 INFO L93 Difference]: Finished difference Result 92 states and 106 transitions. [2021-08-31 02:01:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-31 02:01:34,004 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 106 transitions. [2021-08-31 02:01:34,005 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-08-31 02:01:34,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 62 states and 71 transitions. [2021-08-31 02:01:34,005 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-08-31 02:01:34,005 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-08-31 02:01:34,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 71 transitions. [2021-08-31 02:01:34,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 02:01:34,006 INFO L681 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-08-31 02:01:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 71 transitions. [2021-08-31 02:01:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-08-31 02:01:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 02:01:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-08-31 02:01:34,007 INFO L704 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-08-31 02:01:34,007 INFO L587 BuchiCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-08-31 02:01:34,007 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-08-31 02:01:34,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 71 transitions. [2021-08-31 02:01:34,008 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-08-31 02:01:34,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 02:01:34,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 02:01:34,008 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:34,008 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 02:01:34,009 INFO L791 eck$LassoCheckResult]: Stem: 3242#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(17);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3243#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, 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~nondet7;havoc main_#t~nondet7;havoc main_~blastFlag~0;havoc main_~tmp___1~0;main_~s__state~0 := 8466;main_~blastFlag~0 := 0; 3266#L101 assume !false; 3289#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3288#L26 assume 8466 == main_~s__state~0; 3287#L27 assume 0 == main_~blastFlag~0;main_~blastFlag~0 := 2; 3285#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3282#L101 assume !false; 3281#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3279#L26 assume !(8466 == main_~s__state~0); 3277#L31 assume 8512 == main_~s__state~0; 3267#L32 [2021-08-31 02:01:34,009 INFO L793 eck$LassoCheckResult]: Loop: 3267#L32 main_~tmp___1~0 := main_#t~nondet8;havoc main_#t~nondet8; 3253#L71 assume 0 != main_~tmp___1~0;main_~s__state~0 := 8466; 3254#L101 assume !false; 3297#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3295#L26 assume 8466 == main_~s__state~0; 3248#L27 assume !(0 == main_~blastFlag~0); 3249#L59-1 assume !(0 != main_~s__hit~0);main_~s__state~0 := 8512; 3270#L101 assume !false; 3286#L20 assume !(main_~s__state~0 <= 8512 && main_~blastFlag~0 > 2); 3284#L26 assume !(8466 == main_~s__state~0); 3276#L31 assume 8512 == main_~s__state~0; 3267#L32 [2021-08-31 02:01:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:34,009 INFO L82 PathProgramCache]: Analyzing trace with hash 21626939, now seen corresponding path program 1 times [2021-08-31 02:01:34,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:34,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707965653] [2021-08-31 02:01:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:34,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:34,015 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:34,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:34,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1294878776, now seen corresponding path program 1 times [2021-08-31 02:01:34,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:34,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65227186] [2021-08-31 02:01:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:34,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:34,024 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:34,027 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 02:01:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash 937672638, now seen corresponding path program 1 times [2021-08-31 02:01:34,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 02:01:34,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656814887] [2021-08-31 02:01:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 02:01:34,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 02:01:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:34,033 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 02:01:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 02:01:34,039 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 02:01:34,350 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) at de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData.toString(StatisticsData.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerTimingBenchmark.toString(BuchiAutomizerTimingBenchmark.java:44) at de.uni_freiburg.informatik.ultimate.core.lib.results.StatisticsResult.getLongDescription(StatisticsResult.java:58) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.reportResult(BuchiAutomizerObserver.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-31 02:01:34,353 INFO L158 Benchmark]: Toolchain (without parser) took 6535.05ms. Allocated memory was 46.1MB in the beginning and 83.9MB in the end (delta: 37.7MB). Free memory was 30.6MB in the beginning and 51.6MB in the end (delta: -21.0MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2021-08-31 02:01:34,353 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 46.1MB. Free memory was 27.6MB in the beginning and 27.6MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 02:01:34,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.36ms. Allocated memory was 46.1MB in the beginning and 56.6MB in the end (delta: 10.5MB). Free memory was 30.4MB in the beginning and 40.7MB in the end (delta: -10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-31 02:01:34,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.26ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 02:01:34,354 INFO L158 Benchmark]: Boogie Preprocessor took 40.67ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 38.4MB in the end (delta: 985.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 02:01:34,355 INFO L158 Benchmark]: RCFGBuilder took 255.46ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 29.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 02:01:34,355 INFO L158 Benchmark]: BuchiAutomizer took 5955.53ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 29.3MB in the beginning and 51.6MB in the end (delta: -22.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-08-31 02:01:34,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 46.1MB. Free memory was 27.6MB in the beginning and 27.6MB in the end (delta: 31.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.36ms. Allocated memory was 46.1MB in the beginning and 56.6MB in the end (delta: 10.5MB). Free memory was 30.4MB in the beginning and 40.7MB in the end (delta: -10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.26ms. Allocated memory is still 56.6MB. Free memory was 40.7MB in the beginning and 39.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.67ms. Allocated memory is still 56.6MB. Free memory was 39.3MB in the beginning and 38.4MB in the end (delta: 985.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 255.46ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 29.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5955.53ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 29.3MB in the beginning and 51.6MB in the end (delta: -22.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 5 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 8489 + -1 * s__state 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 8576 + -1 * s__state and consists of 5 locations. One deterministic module has affine ranking function s__state and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 62 locations. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6): de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-31 02:01:34,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...