./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/terminator_02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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/loops/terminator_02-1.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 314932412eeed441a28cefb8ae3e569787d9db1ef6d3b76281c1ff69eee43f8b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:28:31,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:28:31,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:28:31,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:28:31,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:28:31,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:28:31,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:28:31,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:28:31,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:28:31,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:28:31,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:28:31,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:28:31,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:28:31,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:28:31,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:28:31,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:28:31,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:28:31,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:28:31,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:28:31,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:28:31,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:28:31,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:28:31,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:28:31,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:28:31,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:28:31,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:28:31,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:28:31,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:28:31,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:28:31,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:28:31,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:28:31,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:28:31,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:28:31,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:28:31,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:28:31,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:28:31,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:28:31,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:28:31,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:28:31,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:28:31,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:28:31,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:28:32,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:28:32,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:28:32,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:28:32,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:28:32,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:28:32,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:28:32,013 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:28:32,013 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:28:32,013 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:28:32,013 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:28:32,014 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:28:32,014 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:28:32,014 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:28:32,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:28:32,015 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:28:32,015 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:28:32,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:28:32,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:28:32,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:28:32,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:28:32,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:28:32,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:28:32,016 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:28:32,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:28:32,016 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:28:32,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:28:32,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:28:32,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:28:32,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:28:32,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:28:32,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:28:32,018 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:28:32,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 314932412eeed441a28cefb8ae3e569787d9db1ef6d3b76281c1ff69eee43f8b [2021-12-28 09:28:32,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:28:32,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:28:32,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:28:32,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:28:32,314 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:28:32,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_02-1.c [2021-12-28 09:28:32,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/014d2c16b/1215a3655b544e6d9b022063b22931bc/FLAGd7c797323 [2021-12-28 09:28:32,740 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:28:32,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c [2021-12-28 09:28:32,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/014d2c16b/1215a3655b544e6d9b022063b22931bc/FLAGd7c797323 [2021-12-28 09:28:32,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/014d2c16b/1215a3655b544e6d9b022063b22931bc [2021-12-28 09:28:32,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:28:32,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:28:32,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:28:32,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:28:32,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:28:32,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:32,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c7eaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32, skipping insertion in model container [2021-12-28 09:28:32,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:32,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:28:32,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:28:32,906 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/loops/terminator_02-1.c[327,340] [2021-12-28 09:28:32,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:28:32,925 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:28:32,939 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/loops/terminator_02-1.c[327,340] [2021-12-28 09:28:32,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:28:32,964 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:28:32,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32 WrapperNode [2021-12-28 09:28:32,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:28:32,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:28:32,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:28:32,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:28:32,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:32,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:32,992 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2021-12-28 09:28:32,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:28:32,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:28:32,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:28:32,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:28:33,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:28:33,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:28:33,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:28:33,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:28:33,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (1/1) ... [2021-12-28 09:28:33,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:33,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:33,070 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) [2021-12-28 09:28:33,088 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 [2021-12-28 09:28:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:28:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:28:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:28:33,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:28:33,152 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:28:33,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:28:33,250 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:28:33,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:28:33,257 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:28:33,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:28:33 BoogieIcfgContainer [2021-12-28 09:28:33,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:28:33,260 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:28:33,261 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:28:33,263 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:28:33,263 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:28:33,264 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:28:32" (1/3) ... [2021-12-28 09:28:33,264 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66f883d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:28:33, skipping insertion in model container [2021-12-28 09:28:33,265 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:28:33,265 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:28:32" (2/3) ... [2021-12-28 09:28:33,265 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@66f883d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:28:33, skipping insertion in model container [2021-12-28 09:28:33,265 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:28:33,265 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:28:33" (3/3) ... [2021-12-28 09:28:33,266 INFO L388 chiAutomizerObserver]: Analyzing ICFG terminator_02-1.c [2021-12-28 09:28:33,301 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:28:33,302 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:28:33,302 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:28:33,302 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:28:33,302 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:28:33,302 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:28:33,302 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:28:33,302 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:28:33,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:33,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:28:33,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:33,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:33,340 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:28:33,341 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:33,341 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:28:33,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:33,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:28:33,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:33,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:33,343 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:28:33,343 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:33,347 INFO L791 eck$LassoCheckResult]: Stem: 4#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(18, 2);call #Ultimate.allocInit(12, 3); 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~post8#1, main_#t~post9#1, main_#t~post10#1, main_~tmp~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 6#L23-2true [2021-12-28 09:28:33,348 INFO L793 eck$LassoCheckResult]: Loop: 6#L23-2true assume !!(main_~x~0#1 < 100 && 100 < main_~z~0#1);main_~tmp~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 9#L23true assume !(0 != main_~tmp~0#1 % 256);main_#t~post9#1 := main_~x~0#1;main_~x~0#1 := main_#t~post9#1 - 1;havoc main_#t~post9#1;main_#t~post10#1 := main_~z~0#1;main_~z~0#1 := main_#t~post10#1 - 1;havoc main_#t~post10#1; 6#L23-2true [2021-12-28 09:28:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:33,355 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:28:33,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:33,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684203058] [2021-12-28 09:28:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:33,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:33,422 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:33,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2021-12-28 09:28:33,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438314578] [2021-12-28 09:28:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:33,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:33,460 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:33,476 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:33,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2021-12-28 09:28:33,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:33,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652529545] [2021-12-28 09:28:33,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:33,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:33,494 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:33,512 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:33,622 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:33,622 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:33,623 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:33,623 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:33,623 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:28:33,623 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:33,623 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:33,623 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:33,623 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2021-12-28 09:28:33,623 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:33,624 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:33,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:33,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:33,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:33,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:33,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:33,789 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:28:33,792 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:28:33,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:33,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:33,807 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) [2021-12-28 09:28:33,815 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 [2021-12-28 09:28:33,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:28:33,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:33,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:28:33,842 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post9#1=0} Honda state: {ULTIMATE.start_main_#t~post9#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:28:33,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:33,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:33,876 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) [2021-12-28 09:28:33,892 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 [2021-12-28 09:28:33,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:28:33,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:33,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:28:33,962 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post10#1=0} Honda state: {ULTIMATE.start_main_#t~post10#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:28:33,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:33,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:33,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:33,989 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) [2021-12-28 09:28:33,990 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 [2021-12-28 09:28:33,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:28:33,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:34,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-28 09:28:34,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,019 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) [2021-12-28 09:28:34,025 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 [2021-12-28 09:28:34,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:28:34,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:34,060 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:28:34,064 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 [2021-12-28 09:28:34,065 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:34,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:34,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:34,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:34,066 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:28:34,066 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:34,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:34,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration1_Loop [2021-12-28 09:28:34,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:34,066 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:34,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,182 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:28:34,185 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:28:34,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,188 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) [2021-12-28 09:28:34,189 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 [2021-12-28 09:28:34,191 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 [2021-12-28 09:28:34,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:34,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:34,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:34,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:34,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:34,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:34,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:34,210 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:34,225 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 [2021-12-28 09:28:34,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,230 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) [2021-12-28 09:28:34,230 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 [2021-12-28 09:28:34,232 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 [2021-12-28 09:28:34,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:34,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:34,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:34,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:34,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:34,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:34,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:34,259 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:34,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-28 09:28:34,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,278 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) [2021-12-28 09:28:34,282 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 [2021-12-28 09:28:34,282 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 [2021-12-28 09:28:34,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:34,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:34,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:34,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:34,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:34,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:34,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:34,307 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:34,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-28 09:28:34,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,326 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) [2021-12-28 09:28:34,341 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 [2021-12-28 09:28:34,342 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 [2021-12-28 09:28:34,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:34,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:34,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:34,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:34,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:34,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:34,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:34,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:28:34,368 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:28:34,368 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:28:34,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,379 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) [2021-12-28 09:28:34,380 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 [2021-12-28 09:28:34,381 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:28:34,381 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:28:34,381 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:28:34,382 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2021-12-28 09:28:34,419 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 [2021-12-28 09:28:34,421 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:28:34,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:34,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:28:34,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:34,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:34,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:28:34,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:34,523 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 [2021-12-28 09:28:34,524 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-28 09:28:34,551 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 44 states and 54 transitions. Complement of second has 7 states. [2021-12-28 09:28:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:28:34,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-28 09:28:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2021-12-28 09:28:34,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 2 letters. Loop has 2 letters. [2021-12-28 09:28:34,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:34,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-28 09:28:34,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:34,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-28 09:28:34,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:34,558 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2021-12-28 09:28:34,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:28:34,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 9 states and 12 transitions. [2021-12-28 09:28:34,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-28 09:28:34,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-28 09:28:34,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-12-28 09:28:34,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:28:34,563 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-28 09:28:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-12-28 09:28:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-12-28 09:28:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-12-28 09:28:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-12-28 09:28:34,579 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-28 09:28:34,580 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-28 09:28:34,580 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:28:34,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-12-28 09:28:34,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:28:34,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:34,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:34,581 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:28:34,582 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:34,582 INFO L791 eck$LassoCheckResult]: Stem: 94#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(18, 2);call #Ultimate.allocInit(12, 3); 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~post8#1, main_#t~post9#1, main_#t~post10#1, main_~tmp~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 101#L23-2 assume !!(main_~x~0#1 < 100 && 100 < main_~z~0#1);main_~tmp~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 97#L23 [2021-12-28 09:28:34,582 INFO L793 eck$LassoCheckResult]: Loop: 97#L23 assume 0 != main_~tmp~0#1 % 256;main_#t~post8#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 96#L23-2 assume !!(main_~x~0#1 < 100 && 100 < main_~z~0#1);main_~tmp~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 97#L23 [2021-12-28 09:28:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-28 09:28:34,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:34,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873800604] [2021-12-28 09:28:34,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:34,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:34,588 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:34,592 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2021-12-28 09:28:34,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:34,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814512789] [2021-12-28 09:28:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:34,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:34,596 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:34,598 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:34,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:34,599 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 1 times [2021-12-28 09:28:34,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:34,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59993399] [2021-12-28 09:28:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:34,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:34,604 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:34,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:34,631 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:34,631 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:34,631 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:34,631 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:34,631 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:28:34,631 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,632 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:34,632 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:34,632 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2021-12-28 09:28:34,632 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:34,632 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:34,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:34,686 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:28:34,686 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:28:34,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,688 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) [2021-12-28 09:28:34,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:28:34,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:34,708 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 [2021-12-28 09:28:34,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:28:34,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0#1=159, ULTIMATE.start_main_#t~nondet7#1=159} Honda state: {ULTIMATE.start_main_~tmp~0#1=159, ULTIMATE.start_main_#t~nondet7#1=159} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:28:34,741 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 [2021-12-28 09:28:34,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,744 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:34,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-28 09:28:34,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:28:34,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:34,764 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:28:34,764 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0#1=101} Honda state: {ULTIMATE.start_main_~z~0#1=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:28:34,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:34,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,795 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:34,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:28:34,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:34,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-28 09:28:34,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:34,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:34,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:34,844 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:34,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-28 09:28:34,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:28:34,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:35,633 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:28:35,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:35,637 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:35,637 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:35,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:35,637 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:35,637 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:28:35,637 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:35,637 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:35,637 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:35,637 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration2_Loop [2021-12-28 09:28:35,637 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:35,637 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:35,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:35,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:35,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:35,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:35,735 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:28:35,736 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:28:35,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:35,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:35,737 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:35,790 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 [2021-12-28 09:28:35,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-28 09:28:35,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:35,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:35,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:35,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:35,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:35,799 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:35,799 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:35,804 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:35,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:35,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:35,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:35,823 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:35,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-28 09:28:35,825 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 [2021-12-28 09:28:35,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:35,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:35,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:35,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:35,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:35,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:35,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:35,833 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:28:35,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:35,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:35,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:35,853 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:35,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-28 09:28:35,856 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 [2021-12-28 09:28:35,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:35,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:35,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:35,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:35,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:35,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:35,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:35,866 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:28:35,869 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:28:35,869 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:28:35,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:35,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:35,877 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:35,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-28 09:28:35,878 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:28:35,878 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:28:35,879 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:28:35,879 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 197 Supporting invariants [] [2021-12-28 09:28:35,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:35,897 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:28:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:35,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:28:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:35,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:28:35,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:35,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:35,993 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 [2021-12-28 09:28:35,994 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-28 09:28:36,013 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 15 states and 20 transitions. Complement of second has 5 states. [2021-12-28 09:28:36,014 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 [2021-12-28 09:28:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-28 09:28:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-12-28 09:28:36,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-28 09:28:36,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:36,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-28 09:28:36,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:36,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-28 09:28:36,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:36,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2021-12-28 09:28:36,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:28:36,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 10 states and 13 transitions. [2021-12-28 09:28:36,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-28 09:28:36,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-28 09:28:36,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-12-28 09:28:36,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:28:36,020 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-28 09:28:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-12-28 09:28:36,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8. [2021-12-28 09:28:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-12-28 09:28:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-12-28 09:28:36,023 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-12-28 09:28:36,023 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-12-28 09:28:36,023 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:28:36,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2021-12-28 09:28:36,024 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-28 09:28:36,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:28:36,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:28:36,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-12-28 09:28:36,024 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-28 09:28:36,025 INFO L791 eck$LassoCheckResult]: Stem: 153#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(18, 2);call #Ultimate.allocInit(12, 3); 154#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~post8#1, main_#t~post9#1, main_#t~post10#1, main_~tmp~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 155#L23-2 assume !!(main_~x~0#1 < 100 && 100 < main_~z~0#1);main_~tmp~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 156#L23 assume !(0 != main_~tmp~0#1 % 256);main_#t~post9#1 := main_~x~0#1;main_~x~0#1 := main_#t~post9#1 - 1;havoc main_#t~post9#1;main_#t~post10#1 := main_~z~0#1;main_~z~0#1 := main_#t~post10#1 - 1;havoc main_#t~post10#1; 160#L23-2 assume !!(main_~x~0#1 < 100 && 100 < main_~z~0#1);main_~tmp~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 158#L23 [2021-12-28 09:28:36,025 INFO L793 eck$LassoCheckResult]: Loop: 158#L23 assume 0 != main_~tmp~0#1 % 256;main_#t~post8#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 159#L23-2 assume !!(main_~x~0#1 < 100 && 100 < main_~z~0#1);main_~tmp~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 158#L23 [2021-12-28 09:28:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2021-12-28 09:28:36,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:36,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169449286] [2021-12-28 09:28:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:36,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:36,049 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:36,059 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2021-12-28 09:28:36,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:36,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086704143] [2021-12-28 09:28:36,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:36,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:36,064 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:36,067 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:36,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 1 times [2021-12-28 09:28:36,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:28:36,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348765155] [2021-12-28 09:28:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:28:36,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:28:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:36,075 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:28:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:28:36,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:28:36,107 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:36,107 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:36,107 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:36,108 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:36,108 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:28:36,108 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:36,108 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:36,108 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:36,108 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2021-12-28 09:28:36,108 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:36,108 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:36,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:36,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:36,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:36,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:36,172 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:28:36,172 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:28:36,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:36,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:36,173 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:36,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-28 09:28:36,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:28:36,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:36,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-28 09:28:36,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:36,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:36,215 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:36,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-28 09:28:36,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:28:36,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:28:37,005 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:28:37,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-28 09:28:37,012 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:28:37,012 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:28:37,012 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:28:37,012 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:28:37,012 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:28:37,012 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:37,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:28:37,012 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:28:37,012 INFO L133 ssoRankerPreferences]: Filename of dumped script: terminator_02-1.c_Iteration3_Loop [2021-12-28 09:28:37,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:28:37,012 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:28:37,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:37,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:37,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:37,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:28:37,094 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:28:37,094 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:28:37,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:37,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:37,099 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:37,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-28 09:28:37,133 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 [2021-12-28 09:28:37,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:28:37,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:28:37,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:28:37,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:28:37,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:28:37,141 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:28:37,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:28:37,161 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:28:37,162 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:28:37,162 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:28:37,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:28:37,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:28:37,164 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:28:37,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-28 09:28:37,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:28:37,166 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:28:37,166 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:28:37,166 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 197 Supporting invariants [] [2021-12-28 09:28:37,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:37,183 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:28:37,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:37,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:28:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:37,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:28:37,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:37,229 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 [2021-12-28 09:28:37,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:37,240 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 5 states. [2021-12-28 09:28:37,240 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 [2021-12-28 09:28:37,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:37,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-12-28 09:28:37,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-28 09:28:37,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:37,242 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:28:37,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:37,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:28:37,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:37,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:28:37,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:37,274 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:28:37,274 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:37,283 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 5 states. [2021-12-28 09:28:37,284 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 [2021-12-28 09:28:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-12-28 09:28:37,285 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-28 09:28:37,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:37,285 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:28:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:28:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:37,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:28:37,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:28:37,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:28:37,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:28:37,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-28 09:28:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:28:37,338 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:28:37,339 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:37,349 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 4 states. [2021-12-28 09:28:37,349 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 [2021-12-28 09:28:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:28:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-28 09:28:37,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-28 09:28:37,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:37,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-28 09:28:37,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:37,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-28 09:28:37,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:28:37,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-12-28 09:28:37,352 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:28:37,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2021-12-28 09:28:37,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-28 09:28:37,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-28 09:28:37,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-28 09:28:37,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:28:37,352 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:28:37,352 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:28:37,352 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:28:37,352 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:28:37,353 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-28 09:28:37,353 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:28:37,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-28 09:28:37,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:28:37 BoogieIcfgContainer [2021-12-28 09:28:37,358 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:28:37,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:28:37,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:28:37,358 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:28:37,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:28:33" (3/4) ... [2021-12-28 09:28:37,360 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 09:28:37,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:28:37,361 INFO L158 Benchmark]: Toolchain (without parser) took 4595.81ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 31.6MB in the beginning and 59.0MB in the end (delta: -27.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:37,361 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:37,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.18ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 50.6MB in the end (delta: -19.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-28 09:28:37,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.85ms. Allocated memory is still 67.1MB. Free memory was 50.6MB in the beginning and 49.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:37,362 INFO L158 Benchmark]: Boogie Preprocessor took 26.33ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 48.3MB in the end (delta: 907.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:37,362 INFO L158 Benchmark]: RCFGBuilder took 238.46ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 39.6MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:28:37,363 INFO L158 Benchmark]: BuchiAutomizer took 4097.46ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 39.6MB in the beginning and 59.6MB in the end (delta: -20.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:37,363 INFO L158 Benchmark]: Witness Printer took 2.44ms. Allocated memory is still 81.8MB. Free memory was 59.6MB in the beginning and 59.0MB in the end (delta: 621.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:28:37,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory is still 36.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.18ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.5MB in the beginning and 50.6MB in the end (delta: -19.1MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.85ms. Allocated memory is still 67.1MB. Free memory was 50.6MB in the beginning and 49.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.33ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 48.3MB in the end (delta: 907.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 238.46ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 39.6MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4097.46ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 39.6MB in the beginning and 59.6MB in the end (delta: -20.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.44ms. Allocated memory is still 81.8MB. Free memory was 59.6MB in the beginning and 59.0MB in the end (delta: 621.0kB). 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function z and consists of 5 locations. One deterministic module has affine ranking function 197 + -2 * x and consists of 3 locations. One nondeterministic module has affine ranking function 197 + -2 * x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 29 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp46 ukn100 mio100 lsp100 div447 bol100 ite100 ukn100 eq150 hnf95 smp41 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-28 09:28:37,389 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