./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 8d3fb7268073fcc251f9902f5b4913f30f169781 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-31 01:31:32,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-31 01:31:32,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-31 01:31:32,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-31 01:31:32,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-31 01:31:32,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-31 01:31:32,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-31 01:31:32,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-31 01:31:32,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-31 01:31:32,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-31 01:31:32,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-31 01:31:32,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-31 01:31:32,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-31 01:31:32,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-31 01:31:32,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-31 01:31:32,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-31 01:31:32,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-31 01:31:32,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-31 01:31:32,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-31 01:31:32,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-31 01:31:32,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-31 01:31:32,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-31 01:31:32,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-31 01:31:32,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-31 01:31:32,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-31 01:31:32,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-31 01:31:32,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-31 01:31:32,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-31 01:31:32,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-31 01:31:32,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-31 01:31:32,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-31 01:31:32,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-31 01:31:32,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-31 01:31:32,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-31 01:31:32,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-31 01:31:32,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-31 01:31:32,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-31 01:31:32,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-31 01:31:32,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-31 01:31:32,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-31 01:31:32,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-31 01:31:32,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-31 01:31:32,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-31 01:31:32,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-31 01:31:32,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-31 01:31:32,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-31 01:31:32,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-31 01:31:32,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-31 01:31:32,117 INFO L138 SettingsManager]: * Use SBE=true [2021-08-31 01:31:32,117 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-31 01:31:32,117 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-31 01:31:32,118 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-31 01:31:32,118 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-31 01:31:32,118 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-31 01:31:32,119 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-31 01:31:32,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-31 01:31:32,119 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-31 01:31:32,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-31 01:31:32,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-31 01:31:32,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-31 01:31:32,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-31 01:31:32,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-31 01:31:32,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-31 01:31:32,128 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-31 01:31:32,129 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-31 01:31:32,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-31 01:31:32,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-31 01:31:32,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-31 01:31:32,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-31 01:31:32,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-31 01:31:32,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-31 01:31:32,131 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-31 01:31:32,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3fb7268073fcc251f9902f5b4913f30f169781 [2021-08-31 01:31:32,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-31 01:31:32,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-31 01:31:32,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-31 01:31:32,410 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-31 01:31:32,411 INFO L275 PluginConnector]: CDTParser initialized [2021-08-31 01:31:32,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-08-31 01:31:32,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c537450c/5e993411f686411c8c0938a727b26f79/FLAG535bd6082 [2021-08-31 01:31:32,868 INFO L306 CDTParser]: Found 1 translation units. [2021-08-31 01:31:32,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-08-31 01:31:32,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c537450c/5e993411f686411c8c0938a727b26f79/FLAG535bd6082 [2021-08-31 01:31:32,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c537450c/5e993411f686411c8c0938a727b26f79 [2021-08-31 01:31:32,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-31 01:31:32,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-31 01:31:32,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-31 01:31:32,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-31 01:31:32,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-31 01:31:32,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:31:32" (1/1) ... [2021-08-31 01:31:32,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@142835ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:32, skipping insertion in model container [2021-08-31 01:31:32,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:31:32" (1/1) ... [2021-08-31 01:31:32,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-31 01:31:32,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-31 01:31:33,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:31:33,017 INFO L203 MainTranslator]: Completed pre-run [2021-08-31 01:31:33,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-31 01:31:33,039 INFO L208 MainTranslator]: Completed translation [2021-08-31 01:31:33,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33 WrapperNode [2021-08-31 01:31:33,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-31 01:31:33,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-31 01:31:33,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-31 01:31:33,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-31 01:31:33,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-31 01:31:33,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-31 01:31:33,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-31 01:31:33,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-31 01:31:33,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-31 01:31:33,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-31 01:31:33,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-31 01:31:33,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-31 01:31:33,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (1/1) ... [2021-08-31 01:31:33,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:33,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:33,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-31 01:31:33,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-31 01:31:33,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-31 01:31:33,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-31 01:31:33,301 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-31 01:31:33,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:31:33 BoogieIcfgContainer [2021-08-31 01:31:33,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-31 01:31:33,305 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-31 01:31:33,305 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-31 01:31:33,307 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-31 01:31:33,308 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:31:33,308 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.08 01:31:32" (1/3) ... [2021-08-31 01:31:33,309 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f2b2aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:31:33, skipping insertion in model container [2021-08-31 01:31:33,309 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:31:33,310 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:31:33" (2/3) ... [2021-08-31 01:31:33,310 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f2b2aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.08 01:31:33, skipping insertion in model container [2021-08-31 01:31:33,310 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-31 01:31:33,310 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:31:33" (3/3) ... [2021-08-31 01:31:33,312 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2021-08-31 01:31:33,363 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-31 01:31:33,363 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-31 01:31:33,363 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-31 01:31:33,363 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-31 01:31:33,363 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-31 01:31:33,363 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-31 01:31:33,364 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-31 01:31:33,364 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-31 01:31:33,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:33,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-08-31 01:31:33,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:33,391 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:33,395 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:31:33,395 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:31:33,395 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-31 01:31:33,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:33,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-08-31 01:31:33,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:33,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:33,398 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:31:33,398 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-31 01:31:33,404 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 7#L15-2true [2021-08-31 01:31:33,405 INFO L793 eck$LassoCheckResult]: Loop: 7#L15-2true assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 10#L18-2true assume !(main_~j~0 < main_~a~0); 12#L18-3true main_~i~0 := 1 + main_~i~0; 7#L15-2true [2021-08-31 01:31:33,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:33,410 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-31 01:31:33,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:33,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160048791] [2021-08-31 01:31:33,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:33,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:33,480 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:33,499 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:33,503 INFO L82 PathProgramCache]: Analyzing trace with hash 39990, now seen corresponding path program 1 times [2021-08-31 01:31:33,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:33,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53974757] [2021-08-31 01:31:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:33,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:33,529 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:33,546 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:33,552 INFO L82 PathProgramCache]: Analyzing trace with hash 963511, now seen corresponding path program 1 times [2021-08-31 01:31:33,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:33,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883659698] [2021-08-31 01:31:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:33,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:33,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:33,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883659698] [2021-08-31 01:31:33,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883659698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:31:33,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:31:33,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 01:31:33,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662363589] [2021-08-31 01:31:33,717 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:33,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:33,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:33,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:33,718 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-31 01:31:33,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:33,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:33,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:33,719 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-08-31 01:31:33,719 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:33,719 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:33,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:31:33,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:31:33,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:31:33,804 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:33,805 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-31 01:31:33,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:33,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:33,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:33,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-31 01:31:33,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:33,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:33,849 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:31:33,849 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:31:33,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:33,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:33,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:33,876 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) [2021-08-31 01:31:33,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-31 01:31:33,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:33,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:33,913 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-31 01:31:33,913 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-31 01:31:33,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:33,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:33,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:33,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:33,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-31 01:31:33,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-31 01:31:33,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:34,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:34,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:34,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:34,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:34,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-31 01:31:34,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-31 01:31:34,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-31 01:31:34,256 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-31 01:31:34,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-08-31 01:31:34,262 INFO L210 LassoAnalysis]: Preferences: [2021-08-31 01:31:34,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-31 01:31:34,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-31 01:31:34,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-31 01:31:34,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-31 01:31:34,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:34,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-31 01:31:34,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-31 01:31:34,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-08-31 01:31:34,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-31 01:31:34,263 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-31 01:31:34,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:31:34,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:31:34,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-31 01:31:34,355 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-31 01:31:34,358 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-31 01:31:34,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:34,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:34,366 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:34,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-31 01:31:34,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:31:34,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:34,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:34,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:34,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:34,384 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:31:34,384 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:31:34,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:31:34,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:34,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:34,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:34,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-31 01:31:34,418 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:31:34,424 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:34,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:34,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:34,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:34,427 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-31 01:31:34,427 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-31 01:31:34,436 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-31 01:31:34,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:34,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:34,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:34,452 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:34,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-31 01:31:34,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-31 01:31:34,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-31 01:31:34,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-31 01:31:34,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-31 01:31:34,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-31 01:31:34,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-31 01:31:34,464 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-31 01:31:34,464 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-31 01:31:34,471 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-31 01:31:34,474 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-31 01:31:34,474 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-31 01:31:34,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-31 01:31:34,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-31 01:31:34,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-31 01:31:34,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-31 01:31:34,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-31 01:31:34,488 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-31 01:31:34,488 INFO L513 LassoAnalysis]: Proved termination. [2021-08-31 01:31:34,489 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-31 01:31:34,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:34,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-31 01:31:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:34,537 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-31 01:31:34,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:34,545 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-31 01:31:34,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-31 01:31:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:34,628 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-08-31 01:31:34,629 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) 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) [2021-08-31 01:31:34,774 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) 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 60 states and 102 transitions. Complement of second has 9 states. [2021-08-31 01:31:34,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-31 01:31:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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) [2021-08-31 01:31:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2021-08-31 01:31:34,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 3 letters. [2021-08-31 01:31:34,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:34,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-31 01:31:34,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:34,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 6 letters. [2021-08-31 01:31:34,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-31 01:31:34,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 102 transitions. [2021-08-31 01:31:34,786 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-31 01:31:34,791 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 37 states and 54 transitions. [2021-08-31 01:31:34,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-08-31 01:31:34,793 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-08-31 01:31:34,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2021-08-31 01:31:34,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-31 01:31:34,793 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-08-31 01:31:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2021-08-31 01:31:34,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-08-31 01:31:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-08-31 01:31:34,817 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-08-31 01:31:34,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-31 01:31:34,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-31 01:31:34,822 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 4 states, 4 states have (on average 1.0) 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) [2021-08-31 01:31:34,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-31 01:31:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:34,889 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2021-08-31 01:31:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-31 01:31:34,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2021-08-31 01:31:34,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-31 01:31:34,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 18 states and 25 transitions. [2021-08-31 01:31:34,898 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-08-31 01:31:34,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-08-31 01:31:34,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2021-08-31 01:31:34,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:31:34,899 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-08-31 01:31:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2021-08-31 01:31:34,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2021-08-31 01:31:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-08-31 01:31:34,903 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-08-31 01:31:34,903 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-08-31 01:31:34,904 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-31 01:31:34,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-08-31 01:31:34,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-08-31 01:31:34,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:34,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:34,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:31:34,908 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-31 01:31:34,908 INFO L791 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 183#L15-2 [2021-08-31 01:31:34,908 INFO L793 eck$LassoCheckResult]: Loop: 183#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 186#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 187#L20-2 assume !(main_~k~0 >= 0); 189#L20-3 main_~j~0 := 1 + main_~j~0; 190#L18-2 assume !(main_~j~0 < main_~a~0); 188#L18-3 main_~i~0 := 1 + main_~i~0; 183#L15-2 [2021-08-31 01:31:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:34,909 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-08-31 01:31:34,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:34,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292019756] [2021-08-31 01:31:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:34,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:34,918 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:34,921 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:34,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:34,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1192172983, now seen corresponding path program 1 times [2021-08-31 01:31:34,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:34,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188138680] [2021-08-31 01:31:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:34,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:34,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:34,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188138680] [2021-08-31 01:31:34,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188138680] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:31:34,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:31:34,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-31 01:31:34,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506578408] [2021-08-31 01:31:34,957 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:31:34,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:34,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-31 01:31:34,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-31 01:31:34,958 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:34,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:34,995 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-08-31 01:31:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-31 01:31:34,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2021-08-31 01:31:34,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-08-31 01:31:35,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 23 transitions. [2021-08-31 01:31:35,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-08-31 01:31:35,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-31 01:31:35,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2021-08-31 01:31:35,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:31:35,000 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-08-31 01:31:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2021-08-31 01:31:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-08-31 01:31:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-08-31 01:31:35,003 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-08-31 01:31:35,003 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-08-31 01:31:35,003 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-31 01:31:35,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-08-31 01:31:35,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-08-31 01:31:35,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:35,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:35,004 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:31:35,004 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 01:31:35,004 INFO L791 eck$LassoCheckResult]: Stem: 219#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 220#L15-2 [2021-08-31 01:31:35,004 INFO L793 eck$LassoCheckResult]: Loop: 220#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 221#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 222#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 223#L23-2 assume !(main_~l~0 < main_~b~0); 224#L23-3 main_~k~0 := main_~k~0 - 1; 228#L20-2 assume !(main_~k~0 >= 0); 225#L20-3 main_~j~0 := 1 + main_~j~0; 226#L18-2 assume !(main_~j~0 < main_~a~0); 227#L18-3 main_~i~0 := 1 + main_~i~0; 220#L15-2 [2021-08-31 01:31:35,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,005 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-08-31 01:31:35,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771514681] [2021-08-31 01:31:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,011 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,015 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2090456946, now seen corresponding path program 1 times [2021-08-31 01:31:35,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248304288] [2021-08-31 01:31:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:35,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:35,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:35,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248304288] [2021-08-31 01:31:35,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248304288] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:31:35,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:31:35,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-31 01:31:35,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581908963] [2021-08-31 01:31:35,072 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:31:35,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:35,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-31 01:31:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-31 01:31:35,074 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:35,111 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-08-31 01:31:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-31 01:31:35,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2021-08-31 01:31:35,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:31:35,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2021-08-31 01:31:35,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-08-31 01:31:35,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-08-31 01:31:35,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2021-08-31 01:31:35,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:31:35,114 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-08-31 01:31:35,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2021-08-31 01:31:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-08-31 01:31:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-08-31 01:31:35,117 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-08-31 01:31:35,117 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-08-31 01:31:35,117 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-31 01:31:35,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-08-31 01:31:35,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-31 01:31:35,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:35,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:35,119 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-31 01:31:35,119 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-31 01:31:35,120 INFO L791 eck$LassoCheckResult]: Stem: 254#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 255#L15-2 [2021-08-31 01:31:35,120 INFO L793 eck$LassoCheckResult]: Loop: 255#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 256#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 257#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 258#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 252#L25-2 assume !(main_~m~0 >= 0); 253#L25-3 main_~l~0 := 1 + main_~l~0; 262#L23-2 assume !(main_~l~0 < main_~b~0); 263#L23-3 main_~k~0 := main_~k~0 - 1; 264#L20-2 assume !(main_~k~0 >= 0); 259#L20-3 main_~j~0 := 1 + main_~j~0; 260#L18-2 assume !(main_~j~0 < main_~a~0); 261#L18-3 main_~i~0 := 1 + main_~i~0; 255#L15-2 [2021-08-31 01:31:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2021-08-31 01:31:35,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775490952] [2021-08-31 01:31:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,130 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,136 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash -591153991, now seen corresponding path program 1 times [2021-08-31 01:31:35,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090200831] [2021-08-31 01:31:35,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-31 01:31:35,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-31 01:31:35,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-31 01:31:35,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090200831] [2021-08-31 01:31:35,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090200831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-31 01:31:35,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-31 01:31:35,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-31 01:31:35,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643959096] [2021-08-31 01:31:35,188 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-31 01:31:35,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-31 01:31:35,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-31 01:31:35,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-31 01:31:35,189 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:35,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-31 01:31:35,214 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-08-31 01:31:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-31 01:31:35,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 6 transitions. [2021-08-31 01:31:35,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-31 01:31:35,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 6 transitions. [2021-08-31 01:31:35,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-08-31 01:31:35,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-08-31 01:31:35,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2021-08-31 01:31:35,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-31 01:31:35,218 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-08-31 01:31:35,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2021-08-31 01:31:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-08-31 01:31:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-31 01:31:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-08-31 01:31:35,219 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-08-31 01:31:35,220 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-08-31 01:31:35,220 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-31 01:31:35,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2021-08-31 01:31:35,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-31 01:31:35,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-31 01:31:35,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-31 01:31:35,221 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-31 01:31:35,221 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-31 01:31:35,221 INFO L791 eck$LassoCheckResult]: Stem: 284#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 285#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 286#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 287#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 288#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 283#L25-2 [2021-08-31 01:31:35,221 INFO L793 eck$LassoCheckResult]: Loop: 283#L25-2 assume !!(main_~m~0 >= 0);main_~m~0 := main_~m~0 - 0; 283#L25-2 [2021-08-31 01:31:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,222 INFO L82 PathProgramCache]: Analyzing trace with hash 29869746, now seen corresponding path program 1 times [2021-08-31 01:31:35,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054797740] [2021-08-31 01:31:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,232 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,250 INFO L82 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 1 times [2021-08-31 01:31:35,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643144151] [2021-08-31 01:31:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,255 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-31 01:31:35,259 INFO L82 PathProgramCache]: Analyzing trace with hash 925962172, now seen corresponding path program 1 times [2021-08-31 01:31:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-31 01:31:35,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751266038] [2021-08-31 01:31:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-31 01:31:35,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-31 01:31:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,272 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-31 01:31:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-31 01:31:35,281 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-31 01:31:35,370 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) at de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData.toString(StatisticsData.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerTimingBenchmark.toString(BuchiAutomizerTimingBenchmark.java:44) at de.uni_freiburg.informatik.ultimate.core.lib.results.StatisticsResult.getLongDescription(StatisticsResult.java:58) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.reportResult(BuchiAutomizerObserver.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:398) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-31 01:31:35,374 INFO L158 Benchmark]: Toolchain (without parser) took 2481.02ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.9MB in the beginning and 23.8MB in the end (delta: 12.1MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2021-08-31 01:31:35,377 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:31:35,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.89ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 27.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-31 01:31:35,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.80ms. Allocated memory is still 56.6MB. Free memory was 26.9MB in the beginning and 25.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-31 01:31:35,384 INFO L158 Benchmark]: Boogie Preprocessor took 25.57ms. Allocated memory is still 56.6MB. Free memory was 25.6MB in the beginning and 40.1MB in the end (delta: -14.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-31 01:31:35,384 INFO L158 Benchmark]: RCFGBuilder took 214.52ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 40.1MB in the beginning and 46.2MB in the end (delta: -6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-31 01:31:35,385 INFO L158 Benchmark]: BuchiAutomizer took 2068.76ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 23.8MB in the end (delta: 22.4MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2021-08-31 01:31:35,387 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 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 47.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.89ms. Allocated memory is still 56.6MB. Free memory was 35.6MB in the beginning and 27.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.80ms. Allocated memory is still 56.6MB. Free memory was 26.9MB in the beginning and 25.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.57ms. Allocated memory is still 56.6MB. Free memory was 25.6MB in the beginning and 40.1MB in the end (delta: -14.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 214.52ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 40.1MB in the beginning and 46.2MB in the end (delta: -6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 2068.76ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 23.8MB in the end (delta: 22.4MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 6 locations. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6) de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: ClassCastException: class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator cannot be cast to class de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData (de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsAggregator and de.uni_freiburg.informatik.ultimate.util.statistics.StatisticsData are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @560348e6): de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoopBenchmark.prettyprintBenchmarkData(BuchiCegarLoopBenchmark.java:178) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-08-31 01:31:35,428 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...