./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 26d01a9c 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-numeric/rec_counter3.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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 04:15:30,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 04:15:30,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 04:15:30,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 04:15:30,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 04:15:30,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 04:15:30,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 04:15:30,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 04:15:30,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 04:15:30,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 04:15:30,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 04:15:30,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 04:15:30,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 04:15:30,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 04:15:30,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 04:15:30,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 04:15:30,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 04:15:30,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 04:15:30,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 04:15:30,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 04:15:30,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 04:15:30,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 04:15:30,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 04:15:30,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 04:15:30,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 04:15:30,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 04:15:30,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 04:15:30,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 04:15:30,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 04:15:30,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 04:15:30,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 04:15:30,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 04:15:30,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 04:15:30,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 04:15:30,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 04:15:30,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 04:15:30,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 04:15:30,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 04:15:30,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 04:15:30,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 04:15:30,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 04:15:30,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-17 04:15:30,691 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 04:15:30,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 04:15:30,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 04:15:30,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 04:15:30,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 04:15:30,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 04:15:30,692 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 04:15:30,692 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-17 04:15:30,692 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-17 04:15:30,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 04:15:30,693 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-17 04:15:30,694 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 04:15:30,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-17 04:15:30,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 04:15:30,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 04:15:30,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 04:15:30,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 04:15:30,694 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-17 04:15:30,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2023-02-17 04:15:30,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 04:15:30,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 04:15:30,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 04:15:30,920 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 04:15:30,920 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 04:15:30,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-02-17 04:15:31,993 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 04:15:32,125 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 04:15:32,125 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-02-17 04:15:32,129 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf892e9a/c9d45bedfead423784cbdf89988ae465/FLAGe11169f7b [2023-02-17 04:15:32,142 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf892e9a/c9d45bedfead423784cbdf89988ae465 [2023-02-17 04:15:32,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 04:15:32,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 04:15:32,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 04:15:32,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 04:15:32,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 04:15:32,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b56bd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32, skipping insertion in model container [2023-02-17 04:15:32,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 04:15:32,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 04:15:32,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:15:32,301 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 04:15:32,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:15:32,320 INFO L208 MainTranslator]: Completed translation [2023-02-17 04:15:32,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32 WrapperNode [2023-02-17 04:15:32,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 04:15:32,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 04:15:32,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 04:15:32,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 04:15:32,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,340 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-02-17 04:15:32,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 04:15:32,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 04:15:32,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 04:15:32,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 04:15:32,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 04:15:32,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 04:15:32,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 04:15:32,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 04:15:32,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (1/1) ... [2023-02-17 04:15:32,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:32,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:32,380 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) [2023-02-17 04:15:32,382 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 [2023-02-17 04:15:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-17 04:15:32,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-17 04:15:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 04:15:32,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 04:15:32,452 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 04:15:32,454 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 04:15:32,551 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 04:15:32,558 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 04:15:32,560 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 04:15:32,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:15:32 BoogieIcfgContainer [2023-02-17 04:15:32,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 04:15:32,562 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-17 04:15:32,562 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-17 04:15:32,564 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-17 04:15:32,565 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:15:32,565 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.02 04:15:32" (1/3) ... [2023-02-17 04:15:32,566 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30fa33d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 04:15:32, skipping insertion in model container [2023-02-17 04:15:32,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:15:32,566 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:15:32" (2/3) ... [2023-02-17 04:15:32,567 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30fa33d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 04:15:32, skipping insertion in model container [2023-02-17 04:15:32,567 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:15:32,567 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:15:32" (3/3) ... [2023-02-17 04:15:32,568 INFO L332 chiAutomizerObserver]: Analyzing ICFG rec_counter3.c [2023-02-17 04:15:32,614 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-17 04:15:32,614 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-17 04:15:32,614 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-17 04:15:32,614 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-17 04:15:32,614 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-17 04:15:32,615 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-17 04:15:32,615 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-17 04:15:32,615 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-17 04:15:32,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:32,636 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2023-02-17 04:15:32,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:15:32,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:15:32,642 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-17 04:15:32,642 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 04:15:32,643 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-17 04:15:32,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:32,645 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2023-02-17 04:15:32,646 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:15:32,646 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:15:32,646 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-17 04:15:32,647 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 04:15:32,655 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 7#L18true assume !(main_~i~0#1 <= 0); 16#L20true call main_#t~ret3#1 := rec(main_~i~0#1);< 13#$Ultimate##0true [2023-02-17 04:15:32,655 INFO L750 eck$LassoCheckResult]: Loop: 13#$Ultimate##0true ~a := #in~a; 4#L5true assume !(0 == ~a); 9#L8true call #t~ret0 := rec(~a - 1);< 13#$Ultimate##0true [2023-02-17 04:15:32,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1572150, now seen corresponding path program 1 times [2023-02-17 04:15:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:32,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174016990] [2023-02-17 04:15:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:32,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:32,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:32,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:32,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash 29960, now seen corresponding path program 1 times [2023-02-17 04:15:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:32,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545156030] [2023-02-17 04:15:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:32,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:32,782 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:32,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -408719437, now seen corresponding path program 1 times [2023-02-17 04:15:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:32,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096075800] [2023-02-17 04:15:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:32,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:32,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:32,868 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:15:32,869 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:15:32,869 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:15:32,869 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:15:32,870 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:15:32,870 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:32,870 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:15:32,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:15:32,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Loop [2023-02-17 04:15:32,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:15:32,872 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:15:32,886 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:32,894 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:32,909 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:32,920 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:32,921 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:32,922 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:32,927 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:32,935 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:15:32,949 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:15:32,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:32,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:32,954 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) [2023-02-17 04:15:32,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:32,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:32,977 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 [2023-02-17 04:15:33,002 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,003 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,009 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 [2023-02-17 04:15:33,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,011 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) [2023-02-17 04:15:33,014 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 [2023-02-17 04:15:33,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,060 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-02-17 04:15:33,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,121 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) [2023-02-17 04:15:33,125 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 [2023-02-17 04:15:33,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,147 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 [2023-02-17 04:15:33,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,149 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) [2023-02-17 04:15:33,151 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 [2023-02-17 04:15:33,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,160 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,160 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,170 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 [2023-02-17 04:15:33,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,172 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) [2023-02-17 04:15:33,173 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 [2023-02-17 04:15:33,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,185 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,185 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-02-17 04:15:33,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,191 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) [2023-02-17 04:15:33,193 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 [2023-02-17 04:15:33,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,213 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) [2023-02-17 04:15:33,213 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 [2023-02-17 04:15:33,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:15:33,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,250 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,250 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-4} Honda state: {rec_#in~a=-4} Generalized eigenvectors: [{rec_#in~a=-1}, {rec_#in~a=0}, {rec_#in~a=0}] Lambdas: [1, 7, 0] Nus: [1, 1] [2023-02-17 04:15:33,255 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 [2023-02-17 04:15:33,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,257 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) [2023-02-17 04:15:33,259 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 [2023-02-17 04:15:33,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-02-17 04:15:33,282 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:15:33,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:15:33,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:15:33,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:15:33,282 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:15:33,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:15:33,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:15:33,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2023-02-17 04:15:33,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:15:33,283 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:15:33,284 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,285 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,286 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,288 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,291 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,293 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,294 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,295 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,296 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,298 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,303 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,308 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:15:33,308 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:15:33,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,322 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) [2023-02-17 04:15:33,324 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 [2023-02-17 04:15:33,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,334 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,343 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 [2023-02-17 04:15:33,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,344 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) [2023-02-17 04:15:33,348 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 [2023-02-17 04:15:33,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,358 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,358 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,361 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 [2023-02-17 04:15:33,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,363 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) [2023-02-17 04:15:33,365 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 [2023-02-17 04:15:33,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,376 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-02-17 04:15:33,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,380 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) [2023-02-17 04:15:33,381 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 [2023-02-17 04:15:33,383 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,383 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,398 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,401 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 [2023-02-17 04:15:33,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,402 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) [2023-02-17 04:15:33,403 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 [2023-02-17 04:15:33,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,426 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,426 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4#1=0} Honda state: {ULTIMATE.start_#t~ret4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-02-17 04:15:33,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,430 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) [2023-02-17 04:15:33,434 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 [2023-02-17 04:15:33,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,444 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,448 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 [2023-02-17 04:15:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,450 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) [2023-02-17 04:15:33,451 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 [2023-02-17 04:15:33,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,464 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,464 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,469 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 [2023-02-17 04:15:33,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,470 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) [2023-02-17 04:15:33,471 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 [2023-02-17 04:15:33,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,485 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,485 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-02-17 04:15:33,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,489 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) [2023-02-17 04:15:33,490 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 [2023-02-17 04:15:33,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,508 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,508 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,513 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 [2023-02-17 04:15:33,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,514 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) [2023-02-17 04:15:33,516 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 [2023-02-17 04:15:33,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,525 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,525 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,528 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 [2023-02-17 04:15:33,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,529 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) [2023-02-17 04:15:33,530 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 [2023-02-17 04:15:33,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,534 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:15:33,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1#1=0} Honda state: {ULTIMATE.start_main_~res~1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:15:33,551 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 [2023-02-17 04:15:33,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,553 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) [2023-02-17 04:15:33,555 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 [2023-02-17 04:15:33,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:33,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-02-17 04:15:33,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,584 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) [2023-02-17 04:15:33,586 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 [2023-02-17 04:15:33,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:15:33,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:33,613 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:15:33,616 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 [2023-02-17 04:15:33,616 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:15:33,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:15:33,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:15:33,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:15:33,617 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:15:33,617 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,617 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:15:33,617 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:15:33,617 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2023-02-17 04:15:33,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:15:33,617 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:15:33,619 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,621 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,623 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,629 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,630 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,632 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,633 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,634 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,635 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,637 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,638 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:33,644 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:15:33,648 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:15:33,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,651 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) [2023-02-17 04:15:33,670 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 [2023-02-17 04:15:33,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,678 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,679 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,679 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,679 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,682 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 [2023-02-17 04:15:33,691 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-02-17 04:15:33,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,696 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) [2023-02-17 04:15:33,713 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 [2023-02-17 04:15:33,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,722 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,722 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,724 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 [2023-02-17 04:15:33,732 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,738 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 [2023-02-17 04:15:33,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,739 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) [2023-02-17 04:15:33,742 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 [2023-02-17 04:15:33,743 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 [2023-02-17 04:15:33,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,751 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,752 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,766 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,771 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 [2023-02-17 04:15:33,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,775 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) [2023-02-17 04:15:33,778 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 [2023-02-17 04:15:33,779 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 [2023-02-17 04:15:33,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,789 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:33,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,794 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) [2023-02-17 04:15:33,796 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 [2023-02-17 04:15:33,798 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 [2023-02-17 04:15:33,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,807 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,807 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,810 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-02-17 04:15:33,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,814 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) [2023-02-17 04:15:33,827 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 [2023-02-17 04:15:33,832 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 [2023-02-17 04:15:33,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-02-17 04:15:33,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,847 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) [2023-02-17 04:15:33,849 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 [2023-02-17 04:15:33,851 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 [2023-02-17 04:15:33,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,860 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,860 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,879 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-02-17 04:15:33,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,884 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-02-17 04:15:33,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-02-17 04:15:33,888 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 [2023-02-17 04:15:33,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,903 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,903 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,918 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-02-17 04:15:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,923 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-02-17 04:15:33,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-02-17 04:15:33,927 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 [2023-02-17 04:15:33,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:33,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:33,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:33,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:33,938 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:33,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:33,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:33,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:33,945 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-02-17 04:15:33,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-02-17 04:15:33,948 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 [2023-02-17 04:15:33,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:33,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:33,957 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-17 04:15:33,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:33,966 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2023-02-17 04:15:33,966 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2023-02-17 04:15:33,990 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:15:34,011 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2023-02-17 04:15:34,011 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2023-02-17 04:15:34,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:34,022 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-02-17 04:15:34,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-02-17 04:15:34,025 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:15:34,037 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2023-02-17 04:15:34,038 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:15:34,038 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2023-02-17 04:15:34,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:34,047 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-02-17 04:15:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:15:34,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 04:15:34,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:15:34,174 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-02-17 04:15:34,176 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:15:34,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 13 states. [2023-02-17 04:15:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-17 04:15:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:15:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2023-02-17 04:15:34,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2023-02-17 04:15:34,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:34,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2023-02-17 04:15:34,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:34,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2023-02-17 04:15:34,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:34,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2023-02-17 04:15:34,270 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2023-02-17 04:15:34,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 23 states and 30 transitions. [2023-02-17 04:15:34,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-02-17 04:15:34,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-02-17 04:15:34,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2023-02-17 04:15:34,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:15:34,276 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-02-17 04:15:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2023-02-17 04:15:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2023-02-17 04:15:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 04:15:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-02-17 04:15:34,300 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-02-17 04:15:34,300 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-02-17 04:15:34,301 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-17 04:15:34,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2023-02-17 04:15:34,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2023-02-17 04:15:34,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:15:34,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:15:34,303 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:15:34,303 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-17 04:15:34,303 INFO L748 eck$LassoCheckResult]: Stem: 130#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 126#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 127#L18 assume !(main_~i~0#1 <= 0); 120#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 133#$Ultimate##0 ~a := #in~a; 119#L5 assume 0 == ~a;#res := 0; 121#recFINAL assume true; 138#recEXIT >#48#return; 131#L20-1 main_~res~1#1 := main_#t~ret3#1;havoc main_#t~ret3#1; 132#L21-2 [2023-02-17 04:15:34,303 INFO L750 eck$LassoCheckResult]: Loop: 132#L21-2 assume !!(main_~res~1#1 < 1); 132#L21-2 [2023-02-17 04:15:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1937407319, now seen corresponding path program 1 times [2023-02-17 04:15:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162468027] [2023-02-17 04:15:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 04:15:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:15:34,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:15:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162468027] [2023-02-17 04:15:34,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162468027] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:15:34,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:15:34,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 04:15:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647678643] [2023-02-17 04:15:34,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:15:34,384 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-17 04:15:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2023-02-17 04:15:34,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142143675] [2023-02-17 04:15:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:34,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,397 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:15:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 04:15:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:15:34,403 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 04:15:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:15:34,428 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-17 04:15:34,429 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 24 transitions. [2023-02-17 04:15:34,430 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2023-02-17 04:15:34,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 18 states and 21 transitions. [2023-02-17 04:15:34,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2023-02-17 04:15:34,431 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-02-17 04:15:34,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2023-02-17 04:15:34,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:15:34,431 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-02-17 04:15:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2023-02-17 04:15:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-17 04:15:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 04:15:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-02-17 04:15:34,434 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-02-17 04:15:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 04:15:34,435 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-02-17 04:15:34,435 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-17 04:15:34,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2023-02-17 04:15:34,436 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2023-02-17 04:15:34,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:15:34,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:15:34,437 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:15:34,437 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-17 04:15:34,437 INFO L748 eck$LassoCheckResult]: Stem: 186#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 182#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 183#L18 assume !(main_~i~0#1 <= 0); 179#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 189#$Ultimate##0 ~a := #in~a; 178#L5 assume !(0 == ~a); 176#L8 call #t~ret0 := rec(~a - 1);< 185#$Ultimate##0 ~a := #in~a; 175#L5 assume 0 == ~a;#res := 0; 177#recFINAL assume true; 190#recEXIT >#46#return; 184#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 180#L10-2 [2023-02-17 04:15:34,437 INFO L750 eck$LassoCheckResult]: Loop: 180#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 180#L10-2 [2023-02-17 04:15:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 27203062, now seen corresponding path program 1 times [2023-02-17 04:15:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552819756] [2023-02-17 04:15:34,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,447 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2023-02-17 04:15:34,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360390655] [2023-02-17 04:15:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,461 INFO L85 PathProgramCache]: Analyzing trace with hash 843294937, now seen corresponding path program 1 times [2023-02-17 04:15:34,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004445789] [2023-02-17 04:15:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-02-17 04:15:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:15:34,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:15:34,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004445789] [2023-02-17 04:15:34,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004445789] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:15:34,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:15:34,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:15:34,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073692101] [2023-02-17 04:15:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:15:34,515 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:15:34,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:15:34,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:15:34,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:15:34,515 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:15:34,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:15:34,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:15:34,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2023-02-17 04:15:34,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:15:34,516 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:15:34,517 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:34,518 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:34,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:15:34,520 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:15:34,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:34,539 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-02-17 04:15:34,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-02-17 04:15:34,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:34,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:34,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:34,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:34,567 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-02-17 04:15:34,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-02-17 04:15:34,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:15:34,571 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:34,590 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:15:34,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:34,597 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:15:34,597 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:15:34,597 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:15:34,597 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:15:34,598 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:15:34,598 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,598 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:15:34,598 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:15:34,598 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2023-02-17 04:15:34,598 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:15:34,598 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:15:34,599 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:34,600 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:34,602 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:15:34,603 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:15:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:34,625 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-02-17 04:15:34,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-02-17 04:15:34,630 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 [2023-02-17 04:15:34,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:34,638 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:34,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:34,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:34,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:34,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:34,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:34,652 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:15:34,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:34,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:34,660 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-02-17 04:15:34,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-02-17 04:15:34,664 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 [2023-02-17 04:15:34,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:34,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:34,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:34,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:34,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:34,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:34,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:34,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:15:34,689 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-17 04:15:34,689 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-17 04:15:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:34,703 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-02-17 04:15:34,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-02-17 04:15:34,719 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:15:34,719 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:15:34,719 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:15:34,719 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2023-02-17 04:15:34,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:34,723 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:15:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:15:34,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,785 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:15:34,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:15:34,785 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2023-02-17 04:15:34,785 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 04:15:34,824 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 38 states and 50 transitions. Complement of second has 10 states. [2023-02-17 04:15:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:15:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 04:15:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-02-17 04:15:34,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 1 letters. [2023-02-17 04:15:34,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:34,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 1 letters. [2023-02-17 04:15:34,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:34,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 2 letters. [2023-02-17 04:15:34,827 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:34,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 50 transitions. [2023-02-17 04:15:34,828 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2023-02-17 04:15:34,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 32 states and 42 transitions. [2023-02-17 04:15:34,829 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-02-17 04:15:34,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-02-17 04:15:34,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 42 transitions. [2023-02-17 04:15:34,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:15:34,829 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-02-17 04:15:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 42 transitions. [2023-02-17 04:15:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-17 04:15:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-17 04:15:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-02-17 04:15:34,844 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-02-17 04:15:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:15:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 04:15:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 04:15:34,845 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 04:15:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:15:34,868 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-02-17 04:15:34,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2023-02-17 04:15:34,870 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2023-02-17 04:15:34,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 36 transitions. [2023-02-17 04:15:34,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2023-02-17 04:15:34,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-02-17 04:15:34,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2023-02-17 04:15:34,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:15:34,871 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-17 04:15:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2023-02-17 04:15:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-17 04:15:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-17 04:15:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-17 04:15:34,875 INFO L240 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-17 04:15:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 04:15:34,875 INFO L428 stractBuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-17 04:15:34,876 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-17 04:15:34,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 36 transitions. [2023-02-17 04:15:34,876 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2023-02-17 04:15:34,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:15:34,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:15:34,877 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:15:34,877 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-17 04:15:34,877 INFO L748 eck$LassoCheckResult]: Stem: 379#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 374#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 375#L18 assume !(main_~i~0#1 <= 0); 372#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 382#$Ultimate##0 ~a := #in~a; 383#L5 assume !(0 == ~a); 367#L8 call #t~ret0 := rec(~a - 1);< 378#$Ultimate##0 ~a := #in~a; 366#L5 assume 0 == ~a;#res := 0; 369#recFINAL assume true; 387#recEXIT >#46#return; 394#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 371#L10-2 assume !(~rescopy~0 > 0); 373#L10-3 #res := 1 + ~res~0; 395#recFINAL assume true; 388#recEXIT >#48#return; 380#L20-1 main_~res~1#1 := main_#t~ret3#1;havoc main_#t~ret3#1; 381#L21-2 [2023-02-17 04:15:34,877 INFO L750 eck$LassoCheckResult]: Loop: 381#L21-2 assume !!(main_~res~1#1 < 1); 381#L21-2 [2023-02-17 04:15:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1542563482, now seen corresponding path program 1 times [2023-02-17 04:15:34,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775078253] [2023-02-17 04:15:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 2 times [2023-02-17 04:15:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754129231] [2023-02-17 04:15:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:34,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:34,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash -574827647, now seen corresponding path program 1 times [2023-02-17 04:15:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:34,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292571078] [2023-02-17 04:15:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:34,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 04:15:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 04:15:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:15:35,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:15:35,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292571078] [2023-02-17 04:15:35,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292571078] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:15:35,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899023548] [2023-02-17 04:15:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:35,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:15:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:35,008 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:15:35,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-02-17 04:15:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 04:15:35,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:15:35,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 04:15:35,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899023548] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:15:35,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 04:15:35,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-02-17 04:15:35,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809638096] [2023-02-17 04:15:35,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:15:35,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:15:35,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 04:15:35,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-02-17 04:15:35,061 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 04:15:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:15:35,080 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2023-02-17 04:15:35,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2023-02-17 04:15:35,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-17 04:15:35,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 27 transitions. [2023-02-17 04:15:35,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-02-17 04:15:35,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-02-17 04:15:35,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 27 transitions. [2023-02-17 04:15:35,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:15:35,082 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-17 04:15:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 27 transitions. [2023-02-17 04:15:35,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2023-02-17 04:15:35,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 04:15:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-17 04:15:35,083 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-17 04:15:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 04:15:35,084 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-17 04:15:35,084 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-17 04:15:35,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 23 transitions. [2023-02-17 04:15:35,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-17 04:15:35,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:15:35,084 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:15:35,085 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:15:35,085 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-17 04:15:35,085 INFO L748 eck$LassoCheckResult]: Stem: 518#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 519#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 511#L18 assume !(main_~i~0#1 <= 0); 512#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 525#$Ultimate##0 ~a := #in~a; 522#L5 assume !(0 == ~a); 514#L8 call #t~ret0 := rec(~a - 1);< 517#$Ultimate##0 ~a := #in~a; 526#L5 assume !(0 == ~a); 515#L8 call #t~ret0 := rec(~a - 1);< 517#$Ultimate##0 ~a := #in~a; 520#L5 assume 0 == ~a;#res := 0; 521#recFINAL assume true; 530#recEXIT >#46#return; 529#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 523#L10-2 assume !(~rescopy~0 > 0); 524#L10-3 #res := 1 + ~res~0; 528#recFINAL assume true; 527#recEXIT >#46#return; 513#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 516#L10-2 [2023-02-17 04:15:35,085 INFO L750 eck$LassoCheckResult]: Loop: 516#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 516#L10-2 [2023-02-17 04:15:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1552442957, now seen corresponding path program 1 times [2023-02-17 04:15:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:35,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132100022] [2023-02-17 04:15:35,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:35,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:35,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:35,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2023-02-17 04:15:35,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:35,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212236589] [2023-02-17 04:15:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:35,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:35,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:35,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:35,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash -881091396, now seen corresponding path program 1 times [2023-02-17 04:15:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:15:35,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100536021] [2023-02-17 04:15:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:15:35,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:15:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:35,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:15:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:15:35,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:15:35,109 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:15:35,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:15:35,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:15:35,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:15:35,109 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:15:35,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:35,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:15:35,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:15:35,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2023-02-17 04:15:35,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:15:35,109 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:15:35,110 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:35,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:35,113 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:15:35,113 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:15:35,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:35,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:35,129 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-02-17 04:15:35,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:15:35,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:35,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-02-17 04:15:35,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:35,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:35,152 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-02-17 04:15:35,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:15:35,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:15:35,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-02-17 04:15:35,196 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:15:35,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:35,214 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:15:35,214 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:15:35,214 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:15:35,214 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:15:35,214 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:15:35,214 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:35,214 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:15:35,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:15:35,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2023-02-17 04:15:35,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:15:35,214 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:15:35,215 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:35,217 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:15:35,218 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:15:35,219 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:15:35,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:35,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:35,223 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-02-17 04:15:35,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-02-17 04:15:35,227 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 [2023-02-17 04:15:35,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:15:35,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:15:35,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:15:35,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:15:35,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:15:35,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:15:35,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:15:35,257 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:15:35,259 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-17 04:15:35,259 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 04:15:35,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:15:35,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:15:35,273 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-02-17 04:15:35,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-02-17 04:15:35,275 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:15:35,275 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:15:35,275 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:15:35,276 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2023-02-17 04:15:35,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:35,279 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:15:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 04:15:35,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:15:35,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:15:35,359 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2023-02-17 04:15:35,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:35,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2023-02-17 04:15:35,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:15:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2023-02-17 04:15:35,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2023-02-17 04:15:35,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:35,385 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 04:15:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:35,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 04:15:35,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:35,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:35,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,547 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:15:35,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:15:35,548 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2023-02-17 04:15:35,549 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:35,578 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2023-02-17 04:15:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:15:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2023-02-17 04:15:35,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2023-02-17 04:15:35,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:35,579 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 04:15:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:15:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 04:15:35,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:15:35,675 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:15:35,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:15:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:15:35,676 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2023-02-17 04:15:35,676 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:35,703 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 33 states and 41 transitions. Complement of second has 9 states. [2023-02-17 04:15:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:15:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 04:15:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2023-02-17 04:15:35,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 1 letters. [2023-02-17 04:15:35,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:35,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 21 letters. Loop has 1 letters. [2023-02-17 04:15:35,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:35,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 2 letters. [2023-02-17 04:15:35,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:15:35,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2023-02-17 04:15:35,705 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-17 04:15:35,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2023-02-17 04:15:35,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-17 04:15:35,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-17 04:15:35,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-17 04:15:35,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 04:15:35,706 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 04:15:35,706 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 04:15:35,706 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 04:15:35,706 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-17 04:15:35,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-17 04:15:35,706 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-17 04:15:35,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-17 04:15:35,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 04:15:35 BoogieIcfgContainer [2023-02-17 04:15:35,712 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-17 04:15:35,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 04:15:35,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 04:15:35,713 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 04:15:35,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:15:32" (3/4) ... [2023-02-17 04:15:35,715 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 04:15:35,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 04:15:35,716 INFO L158 Benchmark]: Toolchain (without parser) took 3570.62ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 96.8MB in the beginning and 192.2MB in the end (delta: -95.3MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-02-17 04:15:35,716 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory was 78.1MB in the beginning and 78.0MB in the end (delta: 56.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 04:15:35,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.57ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 112.3MB in the end (delta: -15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 04:15:35,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.13ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 111.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 04:15:35,716 INFO L158 Benchmark]: Boogie Preprocessor took 13.95ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 110.0MB in the end (delta: 958.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 04:15:35,716 INFO L158 Benchmark]: RCFGBuilder took 203.96ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 100.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 04:15:35,717 INFO L158 Benchmark]: BuchiAutomizer took 3150.30ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 100.6MB in the beginning and 193.2MB in the end (delta: -92.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2023-02-17 04:15:35,717 INFO L158 Benchmark]: Witness Printer took 2.72ms. Allocated memory is still 249.6MB. Free memory was 193.2MB in the beginning and 192.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 04:15:35,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory was 78.1MB in the beginning and 78.0MB in the end (delta: 56.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.57ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 112.3MB in the end (delta: -15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.13ms. Allocated memory is still 142.6MB. Free memory was 112.3MB in the beginning and 111.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.95ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 110.0MB in the end (delta: 958.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 203.96ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 100.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3150.30ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 100.6MB in the beginning and 193.2MB in the end (delta: -92.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Witness Printer took 2.72ms. Allocated memory is still 249.6MB. Free memory was 193.2MB in the beginning and 192.2MB 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 4 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 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: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 260 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 110 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf94 smp100 dnf123 smp100 tf108 neg96 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 94ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-17 04:15:35,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-02-17 04:15:35,935 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