./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/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 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 17:18:03,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:18:03,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:18:03,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:18:03,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:18:03,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:18:03,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:18:03,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:18:03,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:18:03,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:18:03,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:18:03,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:18:03,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:18:03,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:18:03,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:18:03,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:18:03,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:18:03,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:18:03,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:18:03,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:18:03,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:18:03,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:18:03,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:18:03,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:18:03,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:18:03,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:18:03,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:18:03,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:18:03,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:18:03,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:18:03,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:18:03,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:18:03,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:18:03,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:18:03,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:18:03,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:18:03,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:18:03,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:18:03,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:18:03,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:18:03,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:18:03,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:18:03,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:18:03,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:18:03,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:18:03,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:18:03,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:18:03,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:18:03,158 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:18:03,159 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:18:03,159 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:18:03,159 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:18:03,159 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:18:03,159 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:18:03,159 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:18:03,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:18:03,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:18:03,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:18:03,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:18:03,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:18:03,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:18:03,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:18:03,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:18:03,160 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:18:03,161 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:18:03,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:18:03,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:18:03,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:18:03,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:18:03,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:18:03,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:18:03,162 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:18:03,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 [2021-12-19 17:18:03,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:18:03,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:18:03,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:18:03,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:18:03,386 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:18:03,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-12-19 17:18:03,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2d78d6e/baf9e33e6efc41b290e5352032cebcd1/FLAGa18f69f0c [2021-12-19 17:18:03,738 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:18:03,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-12-19 17:18:03,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2d78d6e/baf9e33e6efc41b290e5352032cebcd1/FLAGa18f69f0c [2021-12-19 17:18:04,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b2d78d6e/baf9e33e6efc41b290e5352032cebcd1 [2021-12-19 17:18:04,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:18:04,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:18:04,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:18:04,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:18:04,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:18:04,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@690ef905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04, skipping insertion in model container [2021-12-19 17:18:04,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:18:04,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:18:04,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:18:04,308 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:18:04,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:18:04,329 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:18:04,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04 WrapperNode [2021-12-19 17:18:04,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:18:04,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:18:04,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:18:04,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:18:04,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,348 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2021-12-19 17:18:04,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:18:04,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:18:04,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:18:04,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:18:04,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:18:04,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:18:04,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:18:04,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:18:04,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (1/1) ... [2021-12-19 17:18:04,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:04,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:04,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:04,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 17:18:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:18:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:18:04,489 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:18:04,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:18:04,567 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:18:04,572 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:18:04,572 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-19 17:18:04,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:04 BoogieIcfgContainer [2021-12-19 17:18:04,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:18:04,576 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:18:04,576 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:18:04,579 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:18:04,579 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:04,579 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:18:04" (1/3) ... [2021-12-19 17:18:04,580 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2afa16df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:18:04, skipping insertion in model container [2021-12-19 17:18:04,581 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:04,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:04" (2/3) ... [2021-12-19 17:18:04,581 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2afa16df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:18:04, skipping insertion in model container [2021-12-19 17:18:04,581 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:04,581 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:04" (3/3) ... [2021-12-19 17:18:04,582 INFO L388 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2021-12-19 17:18:04,617 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:18:04,617 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:18:04,617 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:18:04,618 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:18:04,618 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:18:04,618 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:18:04,618 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:18:04,618 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:18:04,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:04,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-19 17:18:04,641 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:04,641 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:04,645 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:04,645 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:18:04,645 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:18:04,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:04,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-19 17:18:04,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:04,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:04,648 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:04,648 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:18:04,652 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 8#L15-2true [2021-12-19 17:18:04,652 INFO L793 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 11#L18-2true assume !(main_~j~0#1 < main_~a~0#1); 13#L18-3true main_~i~0#1 := 1 + main_~i~0#1; 8#L15-2true [2021-12-19 17:18:04,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:18:04,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:04,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187813509] [2021-12-19 17:18:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:04,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:04,712 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:04,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash 40983, now seen corresponding path program 1 times [2021-12-19 17:18:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296948116] [2021-12-19 17:18:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:04,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:04,746 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:04,758 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:04,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 28699925, now seen corresponding path program 1 times [2021-12-19 17:18:04,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:04,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891248797] [2021-12-19 17:18:04,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:04,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:04,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891248797] [2021-12-19 17:18:04,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891248797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:04,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:04,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 17:18:04,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62925007] [2021-12-19 17:18:04,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:04,859 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:04,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:04,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:04,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:04,860 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:04,860 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:04,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:04,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:04,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-12-19 17:18:04,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:04,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:04,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:04,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:04,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:04,931 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:04,931 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:04,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:04,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:04,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 17:18:04,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:04,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:04,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:04,962 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: [] [2021-12-19 17:18:04,996 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 [2021-12-19 17:18:04,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:04,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:04,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:05,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 17:18:05,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:05,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:05,052 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:05,053 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: [] [2021-12-19 17:18:05,083 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 [2021-12-19 17:18:05,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:05,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:05,098 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:05,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 17:18:05,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:05,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:05,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:05,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:05,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:05,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:05,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 17:18:05,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:05,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:05,402 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:05,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:05,408 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:05,408 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:05,408 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:05,408 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:05,408 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:05,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:05,408 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:05,409 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:05,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-12-19 17:18:05,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:05,409 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:05,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:05,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:05,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:05,487 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:05,495 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:05,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:05,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:05,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 17:18:05,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:05,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:05,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:05,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:05,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:05,528 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:05,528 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:05,544 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:05,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:05,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:05,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:05,560 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:05,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 17:18:05,562 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:05,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:05,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:05,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:05,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:05,580 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:05,580 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:05,596 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:05,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:05,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:05,615 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:05,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 17:18:05,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:18:05,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:05,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:05,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:05,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:05,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:05,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:05,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:05,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:05,635 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:05,635 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:18:05,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:05,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:05,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:05,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 17:18:05,653 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:05,653 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:05,653 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:05,653 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-19 17:18:05,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:05,674 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:05,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:05,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:05,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 17:18:05,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:05,804 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 [2021-12-19 17:18:05,806 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 1.25) internal successors, (5), 4 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) [2021-12-19 17:18:05,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 1.25) internal successors, (5), 4 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 61 states and 103 transitions. Complement of second has 9 states. [2021-12-19 17:18:05,893 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 [2021-12-19 17:18:05,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-12-19 17:18:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2021-12-19 17:18:05,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-19 17:18:05,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:05,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-19 17:18:05,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:05,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 65 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-19 17:18:05,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:05,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 103 transitions. [2021-12-19 17:18:05,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-19 17:18:05,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 38 states and 55 transitions. [2021-12-19 17:18:05,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-12-19 17:18:05,913 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-19 17:18:05,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 55 transitions. [2021-12-19 17:18:05,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:05,913 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 55 transitions. [2021-12-19 17:18:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 55 transitions. [2021-12-19 17:18:05,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2021-12-19 17:18:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-12-19 17:18:05,930 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-19 17:18:05,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 17:18:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 17:18:05,933 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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) [2021-12-19 17:18:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:05,951 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2021-12-19 17:18:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 17:18:05,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2021-12-19 17:18:05,953 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-19 17:18:05,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 26 transitions. [2021-12-19 17:18:05,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2021-12-19 17:18:05,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-12-19 17:18:05,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2021-12-19 17:18:05,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:18:05,954 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-12-19 17:18:05,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2021-12-19 17:18:05,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2021-12-19 17:18:05,955 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) [2021-12-19 17:18:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-19 17:18:05,955 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-19 17:18:05,955 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-19 17:18:05,955 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:18:05,955 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-19 17:18:05,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-19 17:18:05,956 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:05,956 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:05,956 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:05,956 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-19 17:18:05,956 INFO L791 eck$LassoCheckResult]: Stem: 189#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 190#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 196#L15-2 [2021-12-19 17:18:05,957 INFO L793 eck$LassoCheckResult]: Loop: 196#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 193#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 194#L20-2 assume !(main_~k~0#1 >= 0); 197#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 198#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 195#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 196#L15-2 [2021-12-19 17:18:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-19 17:18:05,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465798748] [2021-12-19 17:18:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:05,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:05,960 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:05,961 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1221756439, now seen corresponding path program 1 times [2021-12-19 17:18:05,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:05,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109661623] [2021-12-19 17:18:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:05,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:05,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:05,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109661623] [2021-12-19 17:18:05,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109661623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:05,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:05,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:18:05,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209660432] [2021-12-19 17:18:05,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:05,980 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:18:05,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 17:18:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 17:18:05,981 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 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) [2021-12-19 17:18:05,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:05,998 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2021-12-19 17:18:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 17:18:05,999 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2021-12-19 17:18:05,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-19 17:18:06,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2021-12-19 17:18:06,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-19 17:18:06,000 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-19 17:18:06,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2021-12-19 17:18:06,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:18:06,000 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-12-19 17:18:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2021-12-19 17:18:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-12-19 17:18:06,001 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) [2021-12-19 17:18:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-12-19 17:18:06,002 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-19 17:18:06,002 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-19 17:18:06,002 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:18:06,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-12-19 17:18:06,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-19 17:18:06,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:06,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:06,003 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:06,003 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:18:06,003 INFO L791 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 229#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 237#L15-2 [2021-12-19 17:18:06,003 INFO L793 eck$LassoCheckResult]: Loop: 237#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 230#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 231#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 232#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 233#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 238#L20-2 assume !(main_~k~0#1 >= 0); 234#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 235#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 236#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 237#L15-2 [2021-12-19 17:18:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:06,004 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-19 17:18:06,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:06,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580125269] [2021-12-19 17:18:06,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:06,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,006 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,008 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1352067341, now seen corresponding path program 1 times [2021-12-19 17:18:06,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:06,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906028144] [2021-12-19 17:18:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:06,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:06,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:06,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906028144] [2021-12-19 17:18:06,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906028144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:06,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:06,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 17:18:06,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116000344] [2021-12-19 17:18:06,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:06,027 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:18:06,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:06,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 17:18:06,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 17:18:06,028 INFO L87 Difference]: Start difference. First operand 13 states and 17 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) [2021-12-19 17:18:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:06,048 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-12-19 17:18:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 17:18:06,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2021-12-19 17:18:06,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-19 17:18:06,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 19 transitions. [2021-12-19 17:18:06,049 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-19 17:18:06,050 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-19 17:18:06,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2021-12-19 17:18:06,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:18:06,050 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-12-19 17:18:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2021-12-19 17:18:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-19 17:18:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-12-19 17:18:06,051 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-19 17:18:06,051 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-12-19 17:18:06,051 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:18:06,051 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2021-12-19 17:18:06,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-19 17:18:06,052 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:06,052 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:06,052 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:06,052 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:18:06,052 INFO L791 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 266#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 273#L15-2 [2021-12-19 17:18:06,053 INFO L793 eck$LassoCheckResult]: Loop: 273#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 268#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 269#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 267#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 263#L25-2 assume !(main_~m~0#1 >= 0); 264#L25-3 main_~l~0#1 := 1 + main_~l~0#1; 274#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 275#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 276#L20-2 assume !(main_~k~0#1 >= 0); 270#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 271#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 272#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 273#L15-2 [2021-12-19 17:18:06,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:06,053 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-19 17:18:06,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:06,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011809747] [2021-12-19 17:18:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:06,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,056 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1603093127, now seen corresponding path program 1 times [2021-12-19 17:18:06,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:06,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332829070] [2021-12-19 17:18:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:06,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:06,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:06,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332829070] [2021-12-19 17:18:06,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332829070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:06,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:06,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 17:18:06,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969247446] [2021-12-19 17:18:06,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:06,082 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:18:06,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 17:18:06,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-19 17:18:06,082 INFO L87 Difference]: Start difference. First operand 14 states and 18 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) [2021-12-19 17:18:06,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:06,099 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-12-19 17:18:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 17:18:06,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2021-12-19 17:18:06,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:18:06,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 7 transitions. [2021-12-19 17:18:06,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-19 17:18:06,100 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-19 17:18:06,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2021-12-19 17:18:06,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:18:06,100 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-19 17:18:06,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2021-12-19 17:18:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-19 17:18:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2021-12-19 17:18:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-12-19 17:18:06,101 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-19 17:18:06,101 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-12-19 17:18:06,101 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:18:06,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2021-12-19 17:18:06,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:18:06,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:06,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:06,102 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-19 17:18:06,102 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:18:06,102 INFO L791 eck$LassoCheckResult]: Stem: 297#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 298#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 302#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 299#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 300#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 301#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 296#L25-2 [2021-12-19 17:18:06,103 INFO L793 eck$LassoCheckResult]: Loop: 296#L25-2 assume !!(main_~m~0#1 >= 0);main_~m~0#1 := main_~m~0#1 - 0; 296#L25-2 [2021-12-19 17:18:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash 889698581, now seen corresponding path program 1 times [2021-12-19 17:18:06,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:06,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818685320] [2021-12-19 17:18:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:06,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,108 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,111 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:06,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:06,111 INFO L85 PathProgramCache]: Analyzing trace with hash 78, now seen corresponding path program 1 times [2021-12-19 17:18:06,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:06,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83861279] [2021-12-19 17:18:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:06,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,113 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,114 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:06,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1810852282, now seen corresponding path program 1 times [2021-12-19 17:18:06,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:06,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593758889] [2021-12-19 17:18:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:06,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,119 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:06,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:06,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:06,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:18:06 BoogieIcfgContainer [2021-12-19 17:18:06,223 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:18:06,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:18:06,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:18:06,224 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:18:06,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:04" (3/4) ... [2021-12-19 17:18:06,226 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 17:18:06,258 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 17:18:06,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:18:06,262 INFO L158 Benchmark]: Toolchain (without parser) took 2069.40ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 85.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-12-19 17:18:06,263 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:18:06,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.20ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 92.2MB in the end (delta: -5.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-12-19 17:18:06,264 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.74ms. Allocated memory is still 113.2MB. Free memory was 92.2MB in the beginning and 90.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:18:06,264 INFO L158 Benchmark]: Boogie Preprocessor took 17.87ms. Allocated memory is still 113.2MB. Free memory was 90.9MB in the beginning and 89.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:18:06,265 INFO L158 Benchmark]: RCFGBuilder took 205.50ms. Allocated memory is still 113.2MB. Free memory was 89.7MB in the beginning and 81.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:18:06,266 INFO L158 Benchmark]: BuchiAutomizer took 1647.12ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 87.2MB in the end (delta: -5.8MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2021-12-19 17:18:06,266 INFO L158 Benchmark]: Witness Printer took 38.01ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 85.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:18:06,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 86.0MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.20ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 92.2MB in the end (delta: -5.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.74ms. Allocated memory is still 113.2MB. Free memory was 92.2MB in the beginning and 90.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.87ms. Allocated memory is still 113.2MB. Free memory was 90.9MB in the beginning and 89.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 205.50ms. Allocated memory is still 113.2MB. Free memory was 89.7MB in the beginning and 81.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1647.12ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 87.2MB in the end (delta: -5.8MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * Witness Printer took 38.01ms. Allocated memory is still 113.2MB. Free memory was 87.2MB in the beginning and 85.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. 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 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 39 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {j=0, i=0, k=3, m=1003, l=0, a=2, \result=0, b=7} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 17:18:06,304 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)