./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Log.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 574ddb4e 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/Log.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 08d23a4fccc00925380f274033d6bce2f9ea0cd5a54ce734e93b963eb060b109 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-19 00:16:20,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-19 00:16:20,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-19 00:16:20,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-19 00:16:20,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-19 00:16:20,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-19 00:16:20,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-19 00:16:20,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-19 00:16:20,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-19 00:16:20,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-19 00:16:20,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-19 00:16:20,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-19 00:16:20,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-19 00:16:20,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-19 00:16:20,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-19 00:16:20,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-19 00:16:20,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-19 00:16:20,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-19 00:16:20,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-19 00:16:20,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-19 00:16:20,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-19 00:16:20,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-19 00:16:20,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-19 00:16:20,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-19 00:16:20,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-19 00:16:20,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-19 00:16:20,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-19 00:16:20,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-19 00:16:20,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-19 00:16:20,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-19 00:16:20,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-19 00:16:20,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-19 00:16:20,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-19 00:16:20,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-19 00:16:20,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-19 00:16:20,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-19 00:16:20,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-19 00:16:20,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-19 00:16:20,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-19 00:16:20,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-19 00:16:20,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-19 00:16:20,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-19 00:16:20,178 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-19 00:16:20,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-19 00:16:20,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-19 00:16:20,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-19 00:16:20,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-19 00:16:20,181 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-19 00:16:20,181 INFO L138 SettingsManager]: * Use SBE=true [2023-02-19 00:16:20,181 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-19 00:16:20,182 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-19 00:16:20,182 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-19 00:16:20,183 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-19 00:16:20,183 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-19 00:16:20,183 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-19 00:16:20,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-19 00:16:20,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-19 00:16:20,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-19 00:16:20,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-19 00:16:20,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-19 00:16:20,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-19 00:16:20,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-19 00:16:20,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-19 00:16:20,185 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-19 00:16:20,185 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-19 00:16:20,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-19 00:16:20,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-19 00:16:20,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-19 00:16:20,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-19 00:16:20,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-19 00:16:20,188 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-19 00:16:20,189 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08d23a4fccc00925380f274033d6bce2f9ea0cd5a54ce734e93b963eb060b109 [2023-02-19 00:16:20,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-19 00:16:20,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-19 00:16:20,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-19 00:16:20,481 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-19 00:16:20,481 INFO L275 PluginConnector]: CDTParser initialized [2023-02-19 00:16:20,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Log.c [2023-02-19 00:16:21,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-19 00:16:21,961 INFO L351 CDTParser]: Found 1 translation units. [2023-02-19 00:16:21,962 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Log.c [2023-02-19 00:16:21,967 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eaa80bb6/0047ad4ac97c4dfbacc25de9c2a85a2a/FLAG520ca105f [2023-02-19 00:16:21,988 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4eaa80bb6/0047ad4ac97c4dfbacc25de9c2a85a2a [2023-02-19 00:16:21,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-19 00:16:21,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-19 00:16:21,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-19 00:16:21,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-19 00:16:21,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-19 00:16:21,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:16:21" (1/1) ... [2023-02-19 00:16:22,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bf611d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22, skipping insertion in model container [2023-02-19 00:16:22,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:16:21" (1/1) ... [2023-02-19 00:16:22,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-19 00:16:22,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-19 00:16:22,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:16:22,144 INFO L203 MainTranslator]: Completed pre-run [2023-02-19 00:16:22,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:16:22,163 INFO L208 MainTranslator]: Completed translation [2023-02-19 00:16:22,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22 WrapperNode [2023-02-19 00:16:22,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-19 00:16:22,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-19 00:16:22,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-19 00:16:22,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-19 00:16:22,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,192 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-02-19 00:16:22,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-19 00:16:22,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-19 00:16:22,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-19 00:16:22,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-19 00:16:22,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-19 00:16:22,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-19 00:16:22,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-19 00:16:22,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-19 00:16:22,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (1/1) ... [2023-02-19 00:16:22,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:22,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:22,242 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) [2023-02-19 00:16:22,245 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 [2023-02-19 00:16:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-19 00:16:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-19 00:16:22,342 INFO L235 CfgBuilder]: Building ICFG [2023-02-19 00:16:22,345 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-19 00:16:22,427 INFO L276 CfgBuilder]: Performing block encoding [2023-02-19 00:16:22,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-19 00:16:22,433 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-19 00:16:22,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:16:22 BoogieIcfgContainer [2023-02-19 00:16:22,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-19 00:16:22,435 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-19 00:16:22,436 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-19 00:16:22,439 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-19 00:16:22,440 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:16:22,440 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.02 12:16:21" (1/3) ... [2023-02-19 00:16:22,441 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2aec2529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:16:22, skipping insertion in model container [2023-02-19 00:16:22,441 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:16:22,441 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:16:22" (2/3) ... [2023-02-19 00:16:22,442 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2aec2529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:16:22, skipping insertion in model container [2023-02-19 00:16:22,442 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:16:22,442 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:16:22" (3/3) ... [2023-02-19 00:16:22,443 INFO L332 chiAutomizerObserver]: Analyzing ICFG Log.c [2023-02-19 00:16:22,508 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-19 00:16:22,509 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-19 00:16:22,509 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-19 00:16:22,509 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-19 00:16:22,509 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-19 00:16:22,509 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-19 00:16:22,509 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-19 00:16:22,510 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-19 00:16:22,515 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2023-02-19 00:16:22,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:16:22,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:16:22,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:16:22,535 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:16:22,535 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-19 00:16:22,535 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-19 00:16:22,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2023-02-19 00:16:22,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-19 00:16:22,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:16:22,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:16:22,538 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:16:22,538 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-19 00:16:22,545 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~xtmp~0#1, main_~res~0#1, main_~restmp~0#1;havoc main_~x~0#1;havoc main_~xtmp~0#1;havoc main_~res~0#1;havoc main_~restmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~res~0#1 := 0; 5#L13-2true [2023-02-19 00:16:22,546 INFO L750 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(main_~x~0#1 > 1);main_~xtmp~0#1 := main_~x~0#1;main_~restmp~0#1 := 0; 3#L17-2true assume !(main_~xtmp~0#1 > 1); 9#L17-3true main_~x~0#1 := main_~xtmp~0#1;main_~res~0#1 := 1 + main_~res~0#1; 5#L13-2true [2023-02-19 00:16:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-19 00:16:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:22,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317868002] [2023-02-19 00:16:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-02-19 00:16:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:22,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102806266] [2023-02-19 00:16:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:16:22,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-19 00:16:22,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102806266] [2023-02-19 00:16:22,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102806266] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-19 00:16:22,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-19 00:16:22,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-19 00:16:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399616276] [2023-02-19 00:16:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-19 00:16:22,759 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-19 00:16:22,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-19 00:16:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-19 00:16:22,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-19 00:16:22,794 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-02-19 00:16:22,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-19 00:16:22,837 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2023-02-19 00:16:22,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2023-02-19 00:16:22,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-19 00:16:22,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 6 states and 7 transitions. [2023-02-19 00:16:22,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-02-19 00:16:22,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-02-19 00:16:22,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2023-02-19 00:16:22,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-19 00:16:22,846 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-02-19 00:16:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2023-02-19 00:16:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-02-19 00:16:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2023-02-19 00:16:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2023-02-19 00:16:22,881 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-02-19 00:16:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-19 00:16:22,887 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-02-19 00:16:22,888 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-19 00:16:22,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2023-02-19 00:16:22,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-19 00:16:22,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:16:22,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:16:22,889 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:16:22,890 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-19 00:16:22,890 INFO L748 eck$LassoCheckResult]: Stem: 31#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~xtmp~0#1, main_~res~0#1, main_~restmp~0#1;havoc main_~x~0#1;havoc main_~xtmp~0#1;havoc main_~res~0#1;havoc main_~restmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~res~0#1 := 0; 30#L13-2 [2023-02-19 00:16:22,890 INFO L750 eck$LassoCheckResult]: Loop: 30#L13-2 assume !!(main_~x~0#1 > 1);main_~xtmp~0#1 := main_~x~0#1;main_~restmp~0#1 := 0; 28#L17-2 assume !!(main_~xtmp~0#1 > 1);main_~xtmp~0#1 := main_~xtmp~0#1 - 2;main_~restmp~0#1 := 1 + main_~restmp~0#1; 29#L17-2 assume !(main_~xtmp~0#1 > 1); 33#L17-3 main_~x~0#1 := main_~xtmp~0#1;main_~res~0#1 := 1 + main_~res~0#1; 30#L13-2 [2023-02-19 00:16:22,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-02-19 00:16:22,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:22,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509057997] [2023-02-19 00:16:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:22,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:22,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1271024, now seen corresponding path program 1 times [2023-02-19 00:16:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:22,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718792112] [2023-02-19 00:16:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,911 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:22,920 INFO L85 PathProgramCache]: Analyzing trace with hash 889698226, now seen corresponding path program 1 times [2023-02-19 00:16:22,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:22,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858667629] [2023-02-19 00:16:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:22,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:22,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:22,974 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:16:22,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:16:22,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:16:22,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:16:22,982 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:16:22,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:22,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:16:22,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:16:22,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2023-02-19 00:16:22,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:16:22,983 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:16:23,001 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,022 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,024 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,028 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,033 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,045 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:16:23,051 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:16:23,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,059 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) [2023-02-19 00:16:23,065 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 [2023-02-19 00:16:23,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:23,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,096 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 [2023-02-19 00:16:23,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,101 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) [2023-02-19 00:16:23,104 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 [2023-02-19 00:16:23,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:16:23,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,136 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:23,137 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0#1=0} Honda state: {ULTIMATE.start_main_~res~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0#1=7}, {ULTIMATE.start_main_~res~0#1=-7}, {ULTIMATE.start_main_~res~0#1=1}] Lambdas: [2, 1, 1] Nus: [1, 0] [2023-02-19 00:16:23,148 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 [2023-02-19 00:16:23,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,155 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) [2023-02-19 00:16:23,169 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 [2023-02-19 00:16:23,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:23,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:23,193 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: [] [2023-02-19 00:16:23,200 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 [2023-02-19 00:16:23,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,203 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) [2023-02-19 00:16:23,206 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 [2023-02-19 00:16:23,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:23,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,223 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:23,223 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: [] [2023-02-19 00:16:23,229 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 [2023-02-19 00:16:23,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,231 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) [2023-02-19 00:16:23,233 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 [2023-02-19 00:16:23,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:23,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,254 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 [2023-02-19 00:16:23,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,256 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) [2023-02-19 00:16:23,271 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 [2023-02-19 00:16:23,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:16:23,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,371 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:16:23,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-02-19 00:16:23,376 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:16:23,376 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:16:23,376 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:16:23,376 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:16:23,376 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:16:23,376 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,376 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:16:23,376 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:16:23,377 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2023-02-19 00:16:23,377 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:16:23,377 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:16:23,378 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,383 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,384 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,385 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,387 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,392 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:16:23,396 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:16:23,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,399 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) [2023-02-19 00:16:23,411 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 [2023-02-19 00:16:23,413 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 [2023-02-19 00:16:23,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:23,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:16:23,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:23,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:23,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:23,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-19 00:16:23,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:16:23,440 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:16:23,445 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 [2023-02-19 00:16:23,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,447 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) [2023-02-19 00:16:23,461 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 [2023-02-19 00:16:23,465 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 [2023-02-19 00:16:23,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:23,475 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:23,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:23,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:23,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:16:23,481 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:16:23,497 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:16:23,500 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 [2023-02-19 00:16:23,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,505 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,516 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 [2023-02-19 00:16:23,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:23,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:23,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:23,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:23,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:16:23,528 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:16:23,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-19 00:16:23,544 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:16:23,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,552 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,561 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 [2023-02-19 00:16:23,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:23,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:16:23,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:23,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:23,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:23,571 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-19 00:16:23,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:16:23,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-19 00:16:23,589 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:16:23,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:23,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,598 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-19 00:16:23,613 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 [2023-02-19 00:16:23,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:23,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:16:23,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:23,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:23,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:23,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-19 00:16:23,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:16:23,639 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:16:23,644 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-19 00:16:23,644 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-19 00:16:23,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,649 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-19 00:16:23,653 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:16:23,653 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:16:23,653 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:16:23,654 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-19 00:16:23,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:23,659 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:16:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:23,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:16:23,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:23,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-19 00:16:23,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-19 00:16:23,719 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-19 00:16:23,721 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-02-19 00:16:23,762 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) Result 10 states and 13 transitions. Complement of second has 6 states. [2023-02-19 00:16:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-19 00:16:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-02-19 00:16:23,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2023-02-19 00:16:23,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-19 00:16:23,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:23,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 4 letters. [2023-02-19 00:16:23,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:23,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 8 letters. [2023-02-19 00:16:23,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:23,768 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2023-02-19 00:16:23,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:16:23,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 12 transitions. [2023-02-19 00:16:23,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-02-19 00:16:23,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-19 00:16:23,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2023-02-19 00:16:23,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:16:23,769 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2023-02-19 00:16:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2023-02-19 00:16:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-02-19 00:16:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-02-19 00:16:23,770 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-19 00:16:23,770 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-19 00:16:23,770 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-19 00:16:23,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-02-19 00:16:23,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:16:23,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:16:23,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:16:23,771 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-19 00:16:23,771 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-19 00:16:23,771 INFO L748 eck$LassoCheckResult]: Stem: 92#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~xtmp~0#1, main_~res~0#1, main_~restmp~0#1;havoc main_~x~0#1;havoc main_~xtmp~0#1;havoc main_~res~0#1;havoc main_~restmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~res~0#1 := 0; 90#L13-2 assume !!(main_~x~0#1 > 1);main_~xtmp~0#1 := main_~x~0#1;main_~restmp~0#1 := 0; 87#L17-2 [2023-02-19 00:16:23,772 INFO L750 eck$LassoCheckResult]: Loop: 87#L17-2 assume !!(main_~xtmp~0#1 > 1);main_~xtmp~0#1 := main_~xtmp~0#1 - 2;main_~restmp~0#1 := 1 + main_~restmp~0#1; 87#L17-2 [2023-02-19 00:16:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-19 00:16:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:23,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247436653] [2023-02-19 00:16:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:23,777 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:23,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-02-19 00:16:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:23,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548472570] [2023-02-19 00:16:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:23,793 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:23,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-02-19 00:16:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:23,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985722501] [2023-02-19 00:16:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:23,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:23,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:23,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:23,812 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:16:23,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:16:23,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:16:23,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:16:23,813 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:16:23,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:16:23,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:16:23,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2023-02-19 00:16:23,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:16:23,813 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:16:23,814 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,817 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,818 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,819 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,822 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:16:23,822 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:16:23,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-19 00:16:23,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:23,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,851 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:23,851 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:16:23,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:23,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,861 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-19 00:16:23,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:23,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,902 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-19 00:16:23,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:16:23,906 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:23,941 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:16:23,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:23,948 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:16:23,948 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:16:23,948 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:16:23,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:16:23,948 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:16:23,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,948 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:16:23,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:16:23,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2023-02-19 00:16:23,948 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:16:23,948 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:16:23,950 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,951 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,953 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:23,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:16:23,959 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:16:23,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:23,965 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:23,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-19 00:16:23,971 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 [2023-02-19 00:16:23,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:23,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:23,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:23,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:23,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:16:23,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:16:23,995 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:16:24,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,002 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-19 00:16:24,005 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 [2023-02-19 00:16:24,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:24,011 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:16:24,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:24,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:24,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:24,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-19 00:16:24,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:16:24,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:16:24,025 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-19 00:16:24,025 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-19 00:16:24,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,033 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-19 00:16:24,038 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:16:24,039 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:16:24,039 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:16:24,039 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-02-19 00:16:24,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,048 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:16:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:16:24,075 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-19 00:16:24,075 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,090 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 21 transitions. Complement of second has 5 states. [2023-02-19 00:16:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:16:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-19 00:16:24,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2023-02-19 00:16:24,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2023-02-19 00:16:24,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2023-02-19 00:16:24,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2023-02-19 00:16:24,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:16:24,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2023-02-19 00:16:24,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-02-19 00:16:24,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-02-19 00:16:24,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2023-02-19 00:16:24,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-19 00:16:24,098 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-02-19 00:16:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2023-02-19 00:16:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2023-02-19 00:16:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-02-19 00:16:24,100 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-02-19 00:16:24,100 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-02-19 00:16:24,101 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-19 00:16:24,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2023-02-19 00:16:24,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:16:24,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:16:24,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:16:24,103 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-02-19 00:16:24,103 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-19 00:16:24,103 INFO L748 eck$LassoCheckResult]: Stem: 147#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 148#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~xtmp~0#1, main_~res~0#1, main_~restmp~0#1;havoc main_~x~0#1;havoc main_~xtmp~0#1;havoc main_~res~0#1;havoc main_~restmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~res~0#1 := 0; 145#L13-2 assume !!(main_~x~0#1 > 1);main_~xtmp~0#1 := main_~x~0#1;main_~restmp~0#1 := 0; 143#L17-2 assume !!(main_~xtmp~0#1 > 1);main_~xtmp~0#1 := main_~xtmp~0#1 - 2;main_~restmp~0#1 := 1 + main_~restmp~0#1; 144#L17-2 assume !(main_~xtmp~0#1 > 1); 149#L17-3 main_~x~0#1 := main_~xtmp~0#1;main_~res~0#1 := 1 + main_~res~0#1; 146#L13-2 assume !!(main_~x~0#1 > 1);main_~xtmp~0#1 := main_~x~0#1;main_~restmp~0#1 := 0; 142#L17-2 [2023-02-19 00:16:24,103 INFO L750 eck$LassoCheckResult]: Loop: 142#L17-2 assume !!(main_~xtmp~0#1 > 1);main_~xtmp~0#1 := main_~xtmp~0#1 - 2;main_~restmp~0#1 := 1 + main_~restmp~0#1; 142#L17-2 [2023-02-19 00:16:24,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 2 times [2023-02-19 00:16:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:24,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42695423] [2023-02-19 00:16:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:24,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-19 00:16:24,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-19 00:16:24,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42695423] [2023-02-19 00:16:24,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42695423] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-19 00:16:24,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-19 00:16:24,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-19 00:16:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520738534] [2023-02-19 00:16:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-19 00:16:24,172 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-19 00:16:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:24,173 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2023-02-19 00:16:24,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:16:24,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294292229] [2023-02-19 00:16:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:16:24,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:16:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:24,183 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:16:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:16:24,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:16:24,188 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:16:24,188 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:16:24,188 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:16:24,189 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:16:24,189 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:16:24,189 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,189 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:16:24,189 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:16:24,189 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2023-02-19 00:16:24,189 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:16:24,189 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:16:24,190 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,193 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,196 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:16:24,196 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:16:24,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,198 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:24,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:24,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-19 00:16:24,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,224 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-19 00:16:24,227 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:16:24,227 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:24,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:24,254 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0#1=0} Honda state: {ULTIMATE.start_main_~restmp~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~restmp~0#1=-5}, {ULTIMATE.start_main_~restmp~0#1=6}, {ULTIMATE.start_main_~restmp~0#1=0}] Lambdas: [1, 1, 12] Nus: [0, 0] [2023-02-19 00:16:24,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,262 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-02-19 00:16:24,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:24,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:24,277 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:24,277 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:16:24,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,283 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-19 00:16:24,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:24,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:24,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:16:24,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:16:24,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,316 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-02-19 00:16:24,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:16:24,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:24,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,337 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-19 00:16:24,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:16:24,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:16:24,381 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-19 00:16:24,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,386 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:16:24,386 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:16:24,386 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:16:24,386 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:16:24,386 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-19 00:16:24,386 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,387 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:16:24,387 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:16:24,387 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2023-02-19 00:16:24,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:16:24,387 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:16:24,388 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,390 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,391 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,392 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:16:24,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:16:24,395 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-19 00:16:24,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,396 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-02-19 00:16:24,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,418 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-19 00:16:24,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:24,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:16:24,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:24,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:24,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:24,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-19 00:16:24,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:16:24,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:16:24,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-02-19 00:16:24,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,452 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-02-19 00:16:24,457 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 [2023-02-19 00:16:24,464 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:24,464 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:24,464 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:24,464 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:24,466 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-19 00:16:24,467 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-19 00:16:24,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-19 00:16:24,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,481 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-02-19 00:16:24,486 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 [2023-02-19 00:16:24,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-19 00:16:24,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-19 00:16:24,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-19 00:16:24,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-19 00:16:24,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-19 00:16:24,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-19 00:16:24,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-19 00:16:24,500 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-19 00:16:24,501 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-19 00:16:24,501 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-19 00:16:24,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:16:24,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:16:24,503 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-19 00:16:24,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-02-19 00:16:24,549 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-19 00:16:24,549 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-19 00:16:24,549 INFO L513 LassoAnalysis]: Proved termination. [2023-02-19 00:16:24,549 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2023-02-19 00:16:24,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,553 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-19 00:16:24,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,580 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:16:24,581 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-19 00:16:24,581 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 18 transitions. Complement of second has 5 states. [2023-02-19 00:16:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:16:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-19 00:16:24,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-02-19 00:16:24,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,592 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-19 00:16:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,614 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:16:24,615 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-19 00:16:24,615 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,622 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 18 transitions. Complement of second has 5 states. [2023-02-19 00:16:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:16:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-19 00:16:24,624 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2023-02-19 00:16:24,624 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,624 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-19 00:16:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:16:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-19 00:16:24,646 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-19 00:16:24,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-19 00:16:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-19 00:16:24,648 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-19 00:16:24,648 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,657 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 13 transitions. Complement of second has 4 states. [2023-02-19 00:16:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-19 00:16:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-19 00:16:24,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2023-02-19 00:16:24,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2023-02-19 00:16:24,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2023-02-19 00:16:24,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-19 00:16:24,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2023-02-19 00:16:24,661 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-19 00:16:24,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2023-02-19 00:16:24,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-19 00:16:24,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-19 00:16:24,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-19 00:16:24,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-19 00:16:24,662 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:16:24,662 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:16:24,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-19 00:16:24,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-19 00:16:24,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-19 00:16:24,663 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:16:24,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-19 00:16:24,663 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-02-19 00:16:24,663 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-02-19 00:16:24,663 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-19 00:16:24,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-02-19 00:16:24,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-19 00:16:24,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-19 00:16:24,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-19 00:16:24,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-19 00:16:24,664 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:16:24,664 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:16:24,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-19 00:16:24,665 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-19 00:16:24,665 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-19 00:16:24,665 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-19 00:16:24,665 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-19 00:16:24,666 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-19 00:16:24,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.02 12:16:24 BoogieIcfgContainer [2023-02-19 00:16:24,673 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-19 00:16:24,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-19 00:16:24,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-19 00:16:24,674 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-19 00:16:24,674 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:16:22" (3/4) ... [2023-02-19 00:16:24,676 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-19 00:16:24,676 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-19 00:16:24,677 INFO L158 Benchmark]: Toolchain (without parser) took 2685.07ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 93.6MB in the beginning and 121.1MB in the end (delta: -27.6MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2023-02-19 00:16:24,678 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:24,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.52ms. Allocated memory is still 140.5MB. Free memory was 93.2MB in the beginning and 84.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-19 00:16:24,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.59ms. Allocated memory is still 140.5MB. Free memory was 84.3MB in the beginning and 83.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-19 00:16:24,678 INFO L158 Benchmark]: Boogie Preprocessor took 16.21ms. Allocated memory is still 140.5MB. Free memory was 83.0MB in the beginning and 81.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:24,679 INFO L158 Benchmark]: RCFGBuilder took 224.19ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 73.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-19 00:16:24,679 INFO L158 Benchmark]: BuchiAutomizer took 2237.29ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 73.6MB in the beginning and 122.2MB in the end (delta: -48.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:24,679 INFO L158 Benchmark]: Witness Printer took 3.35ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 121.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:16:24,681 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.52ms. Allocated memory is still 140.5MB. Free memory was 93.2MB in the beginning and 84.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.59ms. Allocated memory is still 140.5MB. Free memory was 84.3MB in the beginning and 83.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.21ms. Allocated memory is still 140.5MB. Free memory was 83.0MB in the beginning and 81.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.19ms. Allocated memory is still 140.5MB. Free memory was 81.8MB in the beginning and 73.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2237.29ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 73.6MB in the beginning and 122.2MB in the end (delta: -48.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.35ms. Allocated memory is still 169.9MB. Free memory was 122.2MB in the beginning and 121.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 32 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax165 hnf100 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp100 dnf100 smp100 tf111 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 51ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-19 00:16:24,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-02-19 00:16:24,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE