./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.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 904bd1313458c4f9af8d5bf1208ba922a2079eb77883d7ecd1ca28ceda09c9f6 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 19:29:46,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 19:29:46,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 19:29:46,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 19:29:46,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 19:29:46,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 19:29:46,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 19:29:46,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 19:29:46,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 19:29:46,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 19:29:46,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 19:29:46,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 19:29:46,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 19:29:46,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 19:29:46,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 19:29:46,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 19:29:46,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 19:29:46,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 19:29:46,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 19:29:46,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 19:29:47,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 19:29:47,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 19:29:47,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 19:29:47,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 19:29:47,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 19:29:47,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 19:29:47,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 19:29:47,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 19:29:47,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 19:29:47,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 19:29:47,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 19:29:47,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 19:29:47,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 19:29:47,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 19:29:47,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 19:29:47,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 19:29:47,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 19:29:47,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 19:29:47,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 19:29:47,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 19:29:47,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 19:29:47,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 19:29:47,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 19:29:47,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 19:29:47,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 19:29:47,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 19:29:47,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 19:29:47,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 19:29:47,044 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 19:29:47,045 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 19:29:47,045 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 19:29:47,045 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 19:29:47,045 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 19:29:47,046 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 19:29:47,046 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 19:29:47,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 19:29:47,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 19:29:47,046 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 19:29:47,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 19:29:47,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 19:29:47,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 19:29:47,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 19:29:47,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 19:29:47,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 19:29:47,047 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 19:29:47,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 19:29:47,048 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 19:29:47,048 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 19:29:47,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 19:29:47,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 19:29:47,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 19:29:47,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 19:29:47,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 19:29:47,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 19:29:47,050 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 19:29:47,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 904bd1313458c4f9af8d5bf1208ba922a2079eb77883d7ecd1ca28ceda09c9f6 [2021-12-19 19:29:47,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 19:29:47,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 19:29:47,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 19:29:47,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 19:29:47,277 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 19:29:47,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2021-12-19 19:29:47,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e627e8c/c3b3feede2c64c80b78538ba586c450b/FLAGf68229abb [2021-12-19 19:29:47,661 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 19:29:47,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2021-12-19 19:29:47,673 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e627e8c/c3b3feede2c64c80b78538ba586c450b/FLAGf68229abb [2021-12-19 19:29:48,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5e627e8c/c3b3feede2c64c80b78538ba586c450b [2021-12-19 19:29:48,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 19:29:48,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 19:29:48,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 19:29:48,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 19:29:48,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 19:29:48,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0eb73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48, skipping insertion in model container [2021-12-19 19:29:48,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 19:29:48,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 19:29:48,261 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c[12764,12777] [2021-12-19 19:29:48,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:29:48,267 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 19:29:48,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c[12764,12777] [2021-12-19 19:29:48,330 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 19:29:48,344 INFO L208 MainTranslator]: Completed translation [2021-12-19 19:29:48,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48 WrapperNode [2021-12-19 19:29:48,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 19:29:48,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 19:29:48,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 19:29:48,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 19:29:48,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,397 INFO L137 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 421 [2021-12-19 19:29:48,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 19:29:48,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 19:29:48,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 19:29:48,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 19:29:48,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 19:29:48,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 19:29:48,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 19:29:48,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 19:29:48,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (1/1) ... [2021-12-19 19:29:48,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:48,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:48,477 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) [2021-12-19 19:29:48,479 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 [2021-12-19 19:29:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 19:29:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 19:29:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 19:29:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 19:29:48,622 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 19:29:48,623 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 19:29:48,964 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 19:29:48,971 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 19:29:48,972 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 19:29:48,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:29:48 BoogieIcfgContainer [2021-12-19 19:29:48,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 19:29:48,974 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 19:29:48,974 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 19:29:48,976 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 19:29:48,977 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:29:48,977 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 07:29:48" (1/3) ... [2021-12-19 19:29:48,978 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55d5f736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:29:48, skipping insertion in model container [2021-12-19 19:29:48,978 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:29:48,978 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 07:29:48" (2/3) ... [2021-12-19 19:29:48,979 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55d5f736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 07:29:48, skipping insertion in model container [2021-12-19 19:29:48,979 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 19:29:48,979 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:29:48" (3/3) ... [2021-12-19 19:29:48,980 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c [2021-12-19 19:29:49,015 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 19:29:49,015 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 19:29:49,015 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 19:29:49,015 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 19:29:49,015 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 19:29:49,016 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 19:29:49,016 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 19:29:49,016 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 19:29:49,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 130 states, 129 states have (on average 1.751937984496124) internal successors, (226), 129 states have internal predecessors, (226), 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) [2021-12-19 19:29:49,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-12-19 19:29:49,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:29:49,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:29:49,048 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,048 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,048 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 19:29:49,049 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 130 states, 129 states have (on average 1.751937984496124) internal successors, (226), 129 states have internal predecessors, (226), 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) [2021-12-19 19:29:49,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-12-19 19:29:49,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:29:49,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:29:49,054 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,054 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,059 INFO L791 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(39, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 46#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~ret37#1, main_#t~ret38#1, main_#t~post39#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~ep12~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~id2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~r2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~st2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~nl2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~m2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~max2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~mode2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~id3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~r3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~st3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~nl3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~m3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~max3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~mode3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 95#L228true assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 51#L231-1true init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 34#L241true assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 30#L244-1true init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 61#L254true assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 64#L257-1true init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 27#L267true assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 15#L270-1true init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 102#L280true assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 81#L283-1true init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 119#L293true assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 79#L296-1true init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 129#L306true assume !(~id1~0 != ~id2~0);init_~tmp___5~0#1 := 0; 116#L306-1true init_#res#1 := init_~tmp___5~0#1; 111#L415true main_#t~ret37#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret37#1;havoc main_#t~ret37#1; 53#L509true assume !(0 == main_~i2~0#1); 90#L509-2true ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 35#L523-2true [2021-12-19 19:29:49,059 INFO L793 eck$LassoCheckResult]: Loop: 35#L523-2true assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1; 70#L75true assume !(0 != ~mode1~0 % 256); 66#L100true assume !(~r1~0 < 1); 84#L100-1true ~mode1~0 := 1; 117#L75-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1; 101#L118true assume !(0 != ~mode2~0 % 256); 105#L143true assume !(~r2~0 < 2); 96#L143-1true ~mode2~0 := 1; 67#L118-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1; 14#L161true assume !(0 != ~mode3~0 % 256); 74#L186true assume !(~r3~0 < 2); 29#L186-1true ~mode3~0 := 1; 6#L161-2true assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 21#L423true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1#1 := 0; 71#L423-1true check_#res#1 := check_~tmp~1#1; 28#L471true main_#t~ret38#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret38#1;havoc main_#t~ret38#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 87#L553true assume !(0 == assert_~arg#1 % 256); 72#L548true assume { :end_inline_assert } true;main_#t~post39#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post39#1;havoc main_#t~post39#1; 35#L523-2true [2021-12-19 19:29:49,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1727567734, now seen corresponding path program 1 times [2021-12-19 19:29:49,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12771626] [2021-12-19 19:29:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:29:49,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:29:49,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12771626] [2021-12-19 19:29:49,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12771626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:29:49,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:29:49,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:29:49,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158756636] [2021-12-19 19:29:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:29:49,217 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:29:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1518597457, now seen corresponding path program 1 times [2021-12-19 19:29:49,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471023311] [2021-12-19 19:29:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:29:49,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:29:49,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471023311] [2021-12-19 19:29:49,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471023311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:29:49,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:29:49,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:29:49,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845543013] [2021-12-19 19:29:49,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:29:49,283 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:29:49,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:29:49,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:29:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:29:49,303 INFO L87 Difference]: Start difference. First operand has 130 states, 129 states have (on average 1.751937984496124) internal successors, (226), 129 states have internal predecessors, (226), 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 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-12-19 19:29:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:29:49,357 INFO L93 Difference]: Finished difference Result 134 states and 226 transitions. [2021-12-19 19:29:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 19:29:49,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 134 states and 226 transitions. [2021-12-19 19:29:49,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2021-12-19 19:29:49,366 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 134 states to 125 states and 210 transitions. [2021-12-19 19:29:49,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 125 [2021-12-19 19:29:49,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 125 [2021-12-19 19:29:49,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 210 transitions. [2021-12-19 19:29:49,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:29:49,368 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2021-12-19 19:29:49,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 210 transitions. [2021-12-19 19:29:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-12-19 19:29:49,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.68) internal successors, (210), 124 states have internal predecessors, (210), 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) [2021-12-19 19:29:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 210 transitions. [2021-12-19 19:29:49,387 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2021-12-19 19:29:49,387 INFO L587 BuchiCegarLoop]: Abstraction has 125 states and 210 transitions. [2021-12-19 19:29:49,388 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 19:29:49,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 210 transitions. [2021-12-19 19:29:49,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2021-12-19 19:29:49,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:29:49,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:29:49,390 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,390 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,390 INFO L791 eck$LassoCheckResult]: Stem: 405#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(39, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 353#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~ret37#1, main_#t~ret38#1, main_#t~post39#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~ep12~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~id2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~r2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~st2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~nl2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~m2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~max2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~mode2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~id3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~r3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~st3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~nl3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~m3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~max3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~mode3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 354#L228 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 360#L231-1 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 337#L241 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 295#L244-1 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 335#L254 assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 345#L257-1 init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 331#L267 assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 299#L270-1 init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 309#L280 assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 381#L283-1 init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 386#L293 assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 347#L296-1 init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 385#L306 assume !(~id1~0 != ~id2~0);init_~tmp___5~0#1 := 0; 284#L306-1 init_#res#1 := init_~tmp___5~0#1; 403#L415 main_#t~ret37#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret37#1;havoc main_#t~ret37#1; 362#L509 assume !(0 == main_~i2~0#1); 363#L509-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 338#L523-2 [2021-12-19 19:29:49,390 INFO L793 eck$LassoCheckResult]: Loop: 338#L523-2 assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1; 339#L75 assume !(0 != ~mode1~0 % 256); 375#L100 assume !(~r1~0 < 1); 355#L100-1 ~mode1~0 := 1; 328#L75-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1; 395#L118 assume !(0 != ~mode2~0 % 256); 396#L143 assume !(~r2~0 < 2); 350#L143-1 ~mode2~0 := 1; 377#L118-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1; 306#L161 assume !(0 != ~mode3~0 % 256); 308#L186 assume !(~r3~0 < 2); 334#L186-1 ~mode3~0 := 1; 287#L161-2 assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 288#L423 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 319#L424 assume ~st1~0 + ~nl1~0 <= 1; 401#L425 assume ~st2~0 + ~nl2~0 <= 1; 402#L426 assume ~st3~0 + ~nl3~0 <= 1; 394#L427 assume ~r1~0 >= 2; 311#L431 assume ~r1~0 < 2; 351#L436 assume ~r1~0 >= 2; 322#L441 assume ~r1~0 < 2;check_~tmp~1#1 := 1; 323#L423-1 check_#res#1 := check_~tmp~1#1; 332#L471 main_#t~ret38#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret38#1;havoc main_#t~ret38#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 333#L553 assume !(0 == assert_~arg#1 % 256); 379#L548 assume { :end_inline_assert } true;main_#t~post39#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post39#1;havoc main_#t~post39#1; 338#L523-2 [2021-12-19 19:29:49,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1727567734, now seen corresponding path program 2 times [2021-12-19 19:29:49,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63228847] [2021-12-19 19:29:49,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:29:49,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:29:49,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63228847] [2021-12-19 19:29:49,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63228847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:29:49,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:29:49,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 19:29:49,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133544681] [2021-12-19 19:29:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:29:49,446 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 19:29:49,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1802356988, now seen corresponding path program 1 times [2021-12-19 19:29:49,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821769538] [2021-12-19 19:29:49,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:29:49,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:29:49,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821769538] [2021-12-19 19:29:49,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821769538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:29:49,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:29:49,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:29:49,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465696470] [2021-12-19 19:29:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:29:49,477 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:29:49,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:29:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 19:29:49,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 19:29:49,478 INFO L87 Difference]: Start difference. First operand 125 states and 210 transitions. cyclomatic complexity: 86 Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-12-19 19:29:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:29:49,538 INFO L93 Difference]: Finished difference Result 196 states and 320 transitions. [2021-12-19 19:29:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 19:29:49,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 320 transitions. [2021-12-19 19:29:49,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2021-12-19 19:29:49,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 193 states and 291 transitions. [2021-12-19 19:29:49,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 193 [2021-12-19 19:29:49,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-12-19 19:29:49,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 193 states and 291 transitions. [2021-12-19 19:29:49,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:29:49,553 INFO L681 BuchiCegarLoop]: Abstraction has 193 states and 291 transitions. [2021-12-19 19:29:49,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states and 291 transitions. [2021-12-19 19:29:49,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 125. [2021-12-19 19:29:49,564 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) [2021-12-19 19:29:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2021-12-19 19:29:49,567 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-12-19 19:29:49,567 INFO L587 BuchiCegarLoop]: Abstraction has 125 states and 183 transitions. [2021-12-19 19:29:49,567 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 19:29:49,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 125 states and 183 transitions. [2021-12-19 19:29:49,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2021-12-19 19:29:49,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:29:49,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:29:49,570 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,571 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,572 INFO L791 eck$LassoCheckResult]: Stem: 739#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(39, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 687#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~ret37#1, main_#t~ret38#1, main_#t~post39#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~ep12~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~id2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~r2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~st2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~nl2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~m2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~max2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~mode2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~id3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~r3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~st3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~nl3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~m3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~max3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~mode3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 688#L228 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 694#L231-1 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 671#L241 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 628#L244-1 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 668#L254 assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 679#L257-1 init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 664#L267 assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 632#L270-1 init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 642#L280 assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 715#L283-1 init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 721#L293 assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 681#L296-1 init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 719#L306 assume ~id1~0 != ~id2~0; 723#L307 assume ~id1~0 != ~id3~0; 637#L308 assume ~id2~0 != ~id3~0; 638#L309 assume ~id1~0 >= 0; 722#L310 assume ~id2~0 >= 0; 701#L311 assume ~id3~0 >= 0; 702#L312 assume 0 == ~r1~0; 662#L313 assume 0 == ~r2~0; 663#L314 assume 0 == ~r3~0; 692#L315 assume 0 != init_~r122~0#1 % 256; 693#L316 assume 0 != init_~r132~0#1 % 256; 618#L317 assume 0 != init_~r212~0#1 % 256; 619#L318 assume 0 != init_~r232~0#1 % 256; 740#L319 assume 0 != init_~r312~0#1 % 256; 727#L320 assume 0 != init_~r322~0#1 % 256; 717#L321 assume ~max1~0 == ~id1~0; 718#L322 assume ~max2~0 == ~id2~0; 616#L323 assume ~max3~0 == ~id3~0; 617#L324 assume 0 == ~st1~0; 645#L325 assume 0 == ~st2~0; 670#L326 assume 0 == ~st3~0; 653#L327 assume 0 == ~nl1~0; 654#L328 assume 0 == ~nl2~0; 682#L329 assume 0 == ~nl3~0; 683#L330 assume 0 == ~mode1~0 % 256; 635#L331 assume 0 == ~mode2~0 % 256; 636#L332 assume 0 == ~mode3~0 % 256;init_~tmp___5~0#1 := 1; 669#L306-1 init_#res#1 := init_~tmp___5~0#1; 737#L415 main_#t~ret37#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret37#1;havoc main_#t~ret37#1; 699#L509 assume !(0 == main_~i2~0#1); 700#L509-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 674#L523-2 [2021-12-19 19:29:49,575 INFO L793 eck$LassoCheckResult]: Loop: 674#L523-2 assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1; 675#L75 assume !(0 != ~mode1~0 % 256); 709#L100 assume !(~r1~0 < 1); 689#L100-1 ~mode1~0 := 1; 661#L75-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1; 729#L118 assume !(0 != ~mode2~0 % 256); 730#L143 assume !(~r2~0 < 2); 684#L143-1 ~mode2~0 := 1; 711#L118-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1; 639#L161 assume !(0 != ~mode3~0 % 256); 641#L186 assume !(~r3~0 < 2); 667#L186-1 ~mode3~0 := 1; 620#L161-2 assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 621#L423 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 650#L424 assume ~st1~0 + ~nl1~0 <= 1; 735#L425 assume ~st2~0 + ~nl2~0 <= 1; 736#L426 assume ~st3~0 + ~nl3~0 <= 1; 728#L427 assume ~r1~0 >= 2; 644#L431 assume ~r1~0 < 2; 685#L436 assume ~r1~0 >= 2; 655#L441 assume ~r1~0 < 2;check_~tmp~1#1 := 1; 656#L423-1 check_#res#1 := check_~tmp~1#1; 665#L471 main_#t~ret38#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret38#1;havoc main_#t~ret38#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 666#L553 assume !(0 == assert_~arg#1 % 256); 713#L548 assume { :end_inline_assert } true;main_#t~post39#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post39#1;havoc main_#t~post39#1; 674#L523-2 [2021-12-19 19:29:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash -97176065, now seen corresponding path program 1 times [2021-12-19 19:29:49,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885008721] [2021-12-19 19:29:49,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:29:49,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:29:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:29:49,695 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:29:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1802356988, now seen corresponding path program 2 times [2021-12-19 19:29:49,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88891352] [2021-12-19 19:29:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:29:49,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:29:49,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88891352] [2021-12-19 19:29:49,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88891352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:29:49,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:29:49,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:29:49,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443601386] [2021-12-19 19:29:49,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:29:49,738 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 19:29:49,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:29:49,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:29:49,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:29:49,739 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. cyclomatic complexity: 59 Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-19 19:29:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:29:49,765 INFO L93 Difference]: Finished difference Result 177 states and 260 transitions. [2021-12-19 19:29:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 19:29:49,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 260 transitions. [2021-12-19 19:29:49,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 120 [2021-12-19 19:29:49,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 177 states and 260 transitions. [2021-12-19 19:29:49,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 177 [2021-12-19 19:29:49,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2021-12-19 19:29:49,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 260 transitions. [2021-12-19 19:29:49,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:29:49,771 INFO L681 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2021-12-19 19:29:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 260 transitions. [2021-12-19 19:29:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-12-19 19:29:49,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 177 states have (on average 1.4689265536723164) internal successors, (260), 176 states have internal predecessors, (260), 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) [2021-12-19 19:29:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 260 transitions. [2021-12-19 19:29:49,780 INFO L704 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2021-12-19 19:29:49,780 INFO L587 BuchiCegarLoop]: Abstraction has 177 states and 260 transitions. [2021-12-19 19:29:49,780 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 19:29:49,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 177 states and 260 transitions. [2021-12-19 19:29:49,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 120 [2021-12-19 19:29:49,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 19:29:49,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 19:29:49,784 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,784 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 19:29:49,785 INFO L791 eck$LassoCheckResult]: Stem: 1057#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(39, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0; 994#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~ret37#1, main_#t~ret38#1, main_#t~post39#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~ep12~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~ep13~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~ep21~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~ep23~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~ep31~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~ep32~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~id1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~r1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~nl1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~m1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~max1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode1~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~id2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~r2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~st2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~nl2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~m2~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~max2~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~mode2~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~id3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~r3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~st3~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~nl3~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~m3~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~max3~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~mode3~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~r121~0#1, init_~r131~0#1, init_~r211~0#1, init_~r231~0#1, init_~r311~0#1, init_~r321~0#1, init_~r122~0#1, init_~tmp~0#1, init_~r132~0#1, init_~tmp___0~0#1, init_~r212~0#1, init_~tmp___1~0#1, init_~r232~0#1, init_~tmp___2~0#1, init_~r312~0#1, init_~tmp___3~0#1, init_~r322~0#1, init_~tmp___4~0#1, init_~tmp___5~0#1;havoc init_~r121~0#1;havoc init_~r131~0#1;havoc init_~r211~0#1;havoc init_~r231~0#1;havoc init_~r311~0#1;havoc init_~r321~0#1;havoc init_~r122~0#1;havoc init_~tmp~0#1;havoc init_~r132~0#1;havoc init_~tmp___0~0#1;havoc init_~r212~0#1;havoc init_~tmp___1~0#1;havoc init_~r232~0#1;havoc init_~tmp___2~0#1;havoc init_~r312~0#1;havoc init_~tmp___3~0#1;havoc init_~r322~0#1;havoc init_~tmp___4~0#1;havoc init_~tmp___5~0#1;init_~r121~0#1 := ~ep12~0;init_~r131~0#1 := ~ep13~0;init_~r211~0#1 := ~ep21~0;init_~r231~0#1 := ~ep23~0;init_~r311~0#1 := ~ep31~0;init_~r321~0#1 := ~ep32~0; 995#L228 assume 0 != init_~r121~0#1 % 256;init_~tmp~0#1 := 1; 1001#L231-1 init_~r122~0#1 := (if 0 == init_~tmp~0#1 then 0 else 1); 978#L241 assume 0 != init_~r131~0#1 % 256;init_~tmp___0~0#1 := 1; 936#L244-1 init_~r132~0#1 := (if 0 == init_~tmp___0~0#1 then 0 else 1); 976#L254 assume 0 != init_~r211~0#1 % 256;init_~tmp___1~0#1 := 1; 986#L257-1 init_~r212~0#1 := (if 0 == init_~tmp___1~0#1 then 0 else 1); 971#L267 assume 0 != init_~r231~0#1 % 256;init_~tmp___2~0#1 := 1; 940#L270-1 init_~r232~0#1 := (if 0 == init_~tmp___2~0#1 then 0 else 1); 950#L280 assume 0 != init_~r311~0#1 % 256;init_~tmp___3~0#1 := 1; 1024#L283-1 init_~r312~0#1 := (if 0 == init_~tmp___3~0#1 then 0 else 1); 1031#L293 assume 0 != init_~r321~0#1 % 256;init_~tmp___4~0#1 := 1; 988#L296-1 init_~r322~0#1 := (if 0 == init_~tmp___4~0#1 then 0 else 1); 1029#L306 assume ~id1~0 != ~id2~0; 1033#L307 assume ~id1~0 != ~id3~0; 945#L308 assume ~id2~0 != ~id3~0; 946#L309 assume ~id1~0 >= 0; 1032#L310 assume ~id2~0 >= 0; 1008#L311 assume ~id3~0 >= 0; 1009#L312 assume 0 == ~r1~0; 969#L313 assume 0 == ~r2~0; 970#L314 assume 0 == ~r3~0; 997#L315 assume 0 != init_~r122~0#1 % 256; 998#L316 assume 0 != init_~r132~0#1 % 256; 926#L317 assume 0 != init_~r212~0#1 % 256; 927#L318 assume 0 != init_~r232~0#1 % 256; 1060#L319 assume 0 != init_~r312~0#1 % 256; 1038#L320 assume 0 != init_~r322~0#1 % 256; 1026#L321 assume ~max1~0 == ~id1~0; 1027#L322 assume ~max2~0 == ~id2~0; 924#L323 assume ~max3~0 == ~id3~0; 925#L324 assume 0 == ~st1~0; 951#L325 assume 0 == ~st2~0; 977#L326 assume 0 == ~st3~0; 961#L327 assume 0 == ~nl1~0; 962#L328 assume 0 == ~nl2~0; 989#L329 assume 0 == ~nl3~0; 990#L330 assume 0 == ~mode1~0 % 256; 943#L331 assume 0 == ~mode2~0 % 256; 944#L332 assume 0 == ~mode3~0 % 256;init_~tmp___5~0#1 := 1; 975#L306-1 init_#res#1 := init_~tmp___5~0#1; 1054#L415 main_#t~ret37#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret37#1;havoc main_#t~ret37#1; 1003#L509 assume !(0 == main_~i2~0#1); 1004#L509-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 1037#L523-2 [2021-12-19 19:29:49,785 INFO L793 eck$LassoCheckResult]: Loop: 1037#L523-2 assume !!(main_~i2~0#1 < 6);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1; 1062#L75 assume !(0 != ~mode1~0 % 256); 1061#L100 assume !(~r1~0 < 1); 996#L100-1 ~mode1~0 := 1; 1095#L75-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1; 1092#L118 assume !(0 != ~mode2~0 % 256); 1088#L143 assume !(~r2~0 < 2); 1040#L143-1 ~mode2~0 := 1; 1019#L118-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1; 1020#L161 assume !(0 != ~mode3~0 % 256); 1078#L186 assume !(~r3~0 < 2); 1075#L186-1 ~mode3~0 := 1; 1073#L161-2 assume { :end_inline_node3 } true;~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 1072#L423 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 1071#L424 assume ~st1~0 + ~nl1~0 <= 1; 1070#L425 assume ~st2~0 + ~nl2~0 <= 1; 1069#L426 assume ~st3~0 + ~nl3~0 <= 1; 1068#L427 assume !(~r1~0 >= 2); 952#L430 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 953#L431 assume ~r1~0 < 2; 1067#L436 assume !(~r1~0 >= 2); 1048#L440 assume 0 == ~nl1~0 + ~nl2~0 + ~nl3~0; 1049#L441 assume ~r1~0 < 2;check_~tmp~1#1 := 1; 1066#L423-1 check_#res#1 := check_~tmp~1#1; 1065#L471 main_#t~ret38#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret38#1;havoc main_#t~ret38#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 1064#L553 assume !(0 == assert_~arg#1 % 256); 1063#L548 assume { :end_inline_assert } true;main_#t~post39#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post39#1;havoc main_#t~post39#1; 1037#L523-2 [2021-12-19 19:29:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,789 INFO L85 PathProgramCache]: Analyzing trace with hash -97176065, now seen corresponding path program 2 times [2021-12-19 19:29:49,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109359593] [2021-12-19 19:29:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:29:49,817 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:29:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:29:49,840 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:29:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash -77605116, now seen corresponding path program 1 times [2021-12-19 19:29:49,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181741013] [2021-12-19 19:29:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:29:49,850 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 19:29:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 19:29:49,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 19:29:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2113327686, now seen corresponding path program 1 times [2021-12-19 19:29:49,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 19:29:49,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904622445] [2021-12-19 19:29:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 19:29:49,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 19:29:49,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:29:49,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 19:29:49,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904622445] [2021-12-19 19:29:49,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904622445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 19:29:49,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 19:29:49,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 19:29:49,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167111994] [2021-12-19 19:29:49,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 19:29:50,285 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 19:29:50,286 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 19:29:50,286 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 19:29:50,286 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 19:29:50,286 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 19:29:50,286 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:50,286 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 19:29:50,286 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 19:29:50,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_floodmax.3.4.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-12-19 19:29:50,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 19:29:50,287 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 19:29:50,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,607 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 19:29:50,607 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 19:29:50,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:50,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:50,610 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) [2021-12-19 19:29:50,613 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 [2021-12-19 19:29:50,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 19:29:50,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:29:50,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-19 19:29:50,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:50,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:50,661 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) [2021-12-19 19:29:50,662 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 [2021-12-19 19:29:50,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 19:29:50,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 19:29:50,779 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 19:29:50,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-19 19:29:50,783 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 19:29:50,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 19:29:50,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 19:29:50,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 19:29:50,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 19:29:50,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:50,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 19:29:50,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 19:29:50,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_floodmax.3.4.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-12-19 19:29:50,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 19:29:50,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 19:29:50,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:50,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 19:29:51,050 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 19:29:51,053 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 19:29:51,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,054 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) [2021-12-19 19:29:51,055 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 [2021-12-19 19:29:51,057 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 [2021-12-19 19:29:51,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:29:51,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:29:51,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:29:51,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:29:51,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:29:51,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:29:51,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:29:51,080 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 19:29:51,097 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 [2021-12-19 19:29:51,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,098 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) [2021-12-19 19:29:51,099 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 [2021-12-19 19:29:51,100 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 [2021-12-19 19:29:51,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:29:51,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:29:51,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:29:51,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:29:51,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:29:51,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:29:51,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:29:51,123 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 19:29:51,140 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 [2021-12-19 19:29:51,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,149 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) [2021-12-19 19:29:51,149 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 [2021-12-19 19:29:51,151 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 [2021-12-19 19:29:51,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:29:51,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:29:51,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:29:51,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:29:51,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:29:51,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:29:51,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:29:51,169 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 19:29:51,185 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 [2021-12-19 19:29:51,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,187 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) [2021-12-19 19:29:51,188 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 [2021-12-19 19:29:51,189 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 [2021-12-19 19:29:51,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:29:51,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:29:51,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:29:51,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:29:51,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:29:51,196 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:29:51,196 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:29:51,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 19:29:51,235 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 [2021-12-19 19:29:51,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,236 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) [2021-12-19 19:29:51,237 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 [2021-12-19 19:29:51,238 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 [2021-12-19 19:29:51,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:29:51,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:29:51,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:29:51,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:29:51,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:29:51,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:29:51,245 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:29:51,260 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 19:29:51,276 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 [2021-12-19 19:29:51,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,277 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) [2021-12-19 19:29:51,278 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 [2021-12-19 19:29:51,279 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 [2021-12-19 19:29:51,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:29:51,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:29:51,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:29:51,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:29:51,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:29:51,286 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:29:51,286 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:29:51,301 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 19:29:51,328 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 [2021-12-19 19:29:51,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,329 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) [2021-12-19 19:29:51,330 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 [2021-12-19 19:29:51,331 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 [2021-12-19 19:29:51,336 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 19:29:51,337 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 19:29:51,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 19:29:51,337 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 19:29:51,337 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 19:29:51,338 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 19:29:51,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 19:29:51,349 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 19:29:51,353 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 19:29:51,353 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 19:29:51,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 19:29:51,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 19:29:51,355 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) [2021-12-19 19:29:51,356 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 [2021-12-19 19:29:51,357 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 19:29:51,357 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 19:29:51,357 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 19:29:51,357 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0#1) = -2*ULTIMATE.start_main_~i2~0#1 + 11 Supporting invariants [] [2021-12-19 19:29:51,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-19 19:29:51,373 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 19:29:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 19:29:51,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:51,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 19:29:51,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 19:29:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 19:29:51,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 19:29:51,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 19:29:51,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 19:29:51,644 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 [2021-12-19 19:29:51,645 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 [2021-12-19 19:29:51,645 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 177 states and 260 transitions. cyclomatic complexity: 84 Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-12-19 19:29:51,692 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 177 states and 260 transitions. cyclomatic complexity: 84. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 296 states and 445 transitions. Complement of second has 4 states. [2021-12-19 19:29:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-19 19:29:51,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-12-19 19:29:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2021-12-19 19:29:51,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 45 letters. Loop has 27 letters. [2021-12-19 19:29:51,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:29:51,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 72 letters. Loop has 27 letters. [2021-12-19 19:29:51,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:29:51,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 183 transitions. Stem has 45 letters. Loop has 54 letters. [2021-12-19 19:29:51,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 19:29:51,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 296 states and 445 transitions. [2021-12-19 19:29:51,701 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 19:29:51,701 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 296 states to 0 states and 0 transitions. [2021-12-19 19:29:51,701 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 19:29:51,701 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 19:29:51,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 19:29:51,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:29:51,702 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 19:29:51,702 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 19:29:51,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 19:29:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 19:29:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 19:29:51,702 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-12-19 19:29:51,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 19:29:51,703 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-19 19:29:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-19 19:29:51,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-19 19:29:51,703 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 19:29:51,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-19 19:29:51,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 19:29:51,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 19:29:51,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 19:29:51,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 19:29:51,704 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 19:29:51,704 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 19:29:51,704 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 19:29:51,704 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 19:29:51,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 19:29:51,704 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 19:29:51,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 19:29:51,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 07:29:51 BoogieIcfgContainer [2021-12-19 19:29:51,708 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 19:29:51,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 19:29:51,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 19:29:51,709 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 19:29:51,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 07:29:48" (3/4) ... [2021-12-19 19:29:51,712 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 19:29:51,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 19:29:51,712 INFO L158 Benchmark]: Toolchain (without parser) took 3651.99ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 76.5MB in the beginning and 92.9MB in the end (delta: -16.4MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-12-19 19:29:51,713 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory was 35.4MB in the beginning and 35.3MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:29:51,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.08ms. Allocated memory is still 107.0MB. Free memory was 76.2MB in the beginning and 77.4MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 19:29:51,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.12ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 74.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:29:51,718 INFO L158 Benchmark]: Boogie Preprocessor took 28.29ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 72.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 19:29:51,718 INFO L158 Benchmark]: RCFGBuilder took 545.23ms. Allocated memory is still 107.0MB. Free memory was 72.4MB in the beginning and 49.7MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-19 19:29:51,718 INFO L158 Benchmark]: BuchiAutomizer took 2734.54ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 49.7MB in the beginning and 92.9MB in the end (delta: -43.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:29:51,719 INFO L158 Benchmark]: Witness Printer took 3.03ms. Allocated memory is still 136.3MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 19:29:51,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 77.6MB. Free memory was 35.4MB in the beginning and 35.3MB in the end (delta: 36.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.08ms. Allocated memory is still 107.0MB. Free memory was 76.2MB in the beginning and 77.4MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.12ms. Allocated memory is still 107.0MB. Free memory was 77.4MB in the beginning and 74.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.29ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 72.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 545.23ms. Allocated memory is still 107.0MB. Free memory was 72.4MB in the beginning and 49.7MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 2734.54ms. Allocated memory was 107.0MB in the beginning and 136.3MB in the end (delta: 29.4MB). Free memory was 49.7MB in the beginning and 92.9MB in the end (delta: -43.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.03ms. Allocated memory is still 136.3MB. Free memory is still 92.9MB. There was no memory consumed. 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 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 11 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 68 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 177 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 376 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 375 mSDsluCounter, 2359 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1505 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 854 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital124 mio100 ax100 hnf100 lsp30 ukn100 mio100 lsp100 div123 bol100 ite100 ukn100 eq182 hnf86 smp100 dnf100 smp100 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 19:29:51,747 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE