./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex08.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-restricted-15/Ex08.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 e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 04:15:59,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 04:15:59,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 04:15:59,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 04:15:59,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 04:15:59,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 04:15:59,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 04:15:59,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 04:15:59,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 04:15:59,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 04:15:59,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 04:15:59,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 04:15:59,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 04:15:59,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 04:15:59,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 04:15:59,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 04:15:59,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 04:15:59,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 04:15:59,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 04:15:59,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 04:15:59,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 04:15:59,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 04:15:59,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 04:15:59,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 04:15:59,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 04:15:59,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 04:15:59,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 04:15:59,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 04:15:59,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 04:15:59,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 04:15:59,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 04:15:59,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 04:15:59,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 04:15:59,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 04:15:59,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 04:15:59,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 04:15:59,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 04:15:59,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 04:15:59,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 04:15:59,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 04:15:59,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 04:15:59,175 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-17 04:15:59,198 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 04:15:59,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 04:15:59,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 04:15:59,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 04:15:59,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 04:15:59,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 04:15:59,201 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 04:15:59,201 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-17 04:15:59,201 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-17 04:15:59,201 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-17 04:15:59,201 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-17 04:15:59,201 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-17 04:15:59,202 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-17 04:15:59,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 04:15:59,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 04:15:59,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 04:15:59,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 04:15:59,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-17 04:15:59,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-17 04:15:59,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-17 04:15:59,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 04:15:59,203 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-17 04:15:59,203 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 04:15:59,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-17 04:15:59,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 04:15:59,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 04:15:59,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 04:15:59,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 04:15:59,205 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-17 04:15:59,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f5cf3ddf7f2bce97ea02caa876a19793443837e6b09c62b997f759c9b40cc6 [2023-02-17 04:15:59,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 04:15:59,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 04:15:59,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 04:15:59,446 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 04:15:59,446 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 04:15:59,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex08.c [2023-02-17 04:16:00,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 04:16:00,507 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 04:16:00,508 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex08.c [2023-02-17 04:16:00,511 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013af4481/0265f2346a534d63a0a093c4b06abdb1/FLAGd7b8c87f7 [2023-02-17 04:16:00,525 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013af4481/0265f2346a534d63a0a093c4b06abdb1 [2023-02-17 04:16:00,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 04:16:00,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 04:16:00,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 04:16:00,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 04:16:00,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 04:16:00,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145ad578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00, skipping insertion in model container [2023-02-17 04:16:00,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 04:16:00,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 04:16:00,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:16:00,632 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 04:16:00,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 04:16:00,650 INFO L208 MainTranslator]: Completed translation [2023-02-17 04:16:00,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00 WrapperNode [2023-02-17 04:16:00,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 04:16:00,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 04:16:00,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 04:16:00,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 04:16:00,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,670 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-02-17 04:16:00,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 04:16:00,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 04:16:00,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 04:16:00,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 04:16:00,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,682 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 04:16:00,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 04:16:00,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 04:16:00,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 04:16:00,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (1/1) ... [2023-02-17 04:16:00,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:00,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:00,714 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 04:16:00,723 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 04:16:00,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 04:16:00,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 04:16:00,789 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 04:16:00,791 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 04:16:00,831 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 04:16:00,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 04:16:00,839 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 04:16:00,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:16:00 BoogieIcfgContainer [2023-02-17 04:16:00,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 04:16:00,841 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-17 04:16:00,841 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-17 04:16:00,849 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-17 04:16:00,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:16:00,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.02 04:16:00" (1/3) ... [2023-02-17 04:16:00,852 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@564c75be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 04:16:00, skipping insertion in model container [2023-02-17 04:16:00,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:16:00,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 04:16:00" (2/3) ... [2023-02-17 04:16:00,853 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@564c75be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 04:16:00, skipping insertion in model container [2023-02-17 04:16:00,853 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 04:16:00,853 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 04:16:00" (3/3) ... [2023-02-17 04:16:00,854 INFO L332 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2023-02-17 04:16:00,919 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-17 04:16:00,919 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-17 04:16:00,919 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-17 04:16:00,919 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-17 04:16:00,919 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-17 04:16:00,920 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-17 04:16:00,920 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-17 04:16:00,920 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-17 04:16:00,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:00,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-17 04:16:00,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:00,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:00,937 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-17 04:16:00,938 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:00,938 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-17 04:16:00,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:00,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-17 04:16:00,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:00,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:00,939 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-17 04:16:00,940 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:00,944 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4#L18-1true [2023-02-17 04:16:00,945 INFO L750 eck$LassoCheckResult]: Loop: 4#L18-1true assume !!(main_~i~0#1 > 0); 10#L12true assume !(1 == main_~i~0#1); 2#L12-2true assume 10 == main_~i~0#1;main_~up~0#1 := 0; 7#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4#L18-1true [2023-02-17 04:16:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-17 04:16:00,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:00,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371495733] [2023-02-17 04:16:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:00,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-02-17 04:16:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140385164] [2023-02-17 04:16:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:01,087 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 04:16:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:01,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140385164] [2023-02-17 04:16:01,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140385164] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:16:01,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:16:01,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 04:16:01,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101593757] [2023-02-17 04:16:01,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:16:01,100 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-17 04:16:01,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:16:01,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 04:16:01,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 04:16:01,122 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:16:01,138 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2023-02-17 04:16:01,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2023-02-17 04:16:01,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-02-17 04:16:01,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 10 states and 15 transitions. [2023-02-17 04:16:01,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-17 04:16:01,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-17 04:16:01,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2023-02-17 04:16:01,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 04:16:01,144 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2023-02-17 04:16:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2023-02-17 04:16:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-17 04:16:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2023-02-17 04:16:01,160 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2023-02-17 04:16:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 04:16:01,164 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2023-02-17 04:16:01,164 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-17 04:16:01,164 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2023-02-17 04:16:01,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-02-17 04:16:01,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:01,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:01,165 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-17 04:16:01,165 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:01,165 INFO L748 eck$LassoCheckResult]: Stem: 42#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 43#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 44#L18-1 [2023-02-17 04:16:01,166 INFO L750 eck$LassoCheckResult]: Loop: 44#L18-1 assume !!(main_~i~0#1 > 0); 46#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 37#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 38#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 44#L18-1 [2023-02-17 04:16:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-02-17 04:16:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539648868] [2023-02-17 04:16:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1265324, now seen corresponding path program 1 times [2023-02-17 04:16:01,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251291986] [2023-02-17 04:16:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:01,195 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 04:16:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:01,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251291986] [2023-02-17 04:16:01,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251291986] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:16:01,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:16:01,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 04:16:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218485352] [2023-02-17 04:16:01,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:16:01,197 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-17 04:16:01,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:16:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 04:16:01,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 04:16:01,198 INFO L87 Difference]: Start difference. First operand 10 states and 15 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:16:01,225 INFO L93 Difference]: Finished difference Result 14 states and 21 transitions. [2023-02-17 04:16:01,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 21 transitions. [2023-02-17 04:16:01,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-02-17 04:16:01,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 21 transitions. [2023-02-17 04:16:01,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-02-17 04:16:01,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2023-02-17 04:16:01,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2023-02-17 04:16:01,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 04:16:01,228 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-02-17 04:16:01,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2023-02-17 04:16:01,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-17 04:16:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2023-02-17 04:16:01,230 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-02-17 04:16:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 04:16:01,231 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-02-17 04:16:01,231 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-17 04:16:01,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2023-02-17 04:16:01,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-02-17 04:16:01,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:01,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:01,232 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-17 04:16:01,232 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:01,232 INFO L748 eck$LassoCheckResult]: Stem: 71#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 72#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 74#L18-1 [2023-02-17 04:16:01,232 INFO L750 eck$LassoCheckResult]: Loop: 74#L18-1 assume !!(main_~i~0#1 > 0); 79#L12 assume !(1 == main_~i~0#1); 78#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 73#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 74#L18-1 [2023-02-17 04:16:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-02-17 04:16:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835001712] [2023-02-17 04:16:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,239 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2023-02-17 04:16:01,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888160625] [2023-02-17 04:16:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,254 INFO L85 PathProgramCache]: Analyzing trace with hash 889694448, now seen corresponding path program 1 times [2023-02-17 04:16:01,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163534279] [2023-02-17 04:16:01,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,280 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:01,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:01,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:01,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:01,281 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:01,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:01,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:01,281 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2023-02-17 04:16:01,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:01,281 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:01,292 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 04:16:01,297 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 04:16:01,298 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 04:16:01,300 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 04:16:01,310 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:01,312 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:16:01,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,316 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 04:16:01,317 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 04:16:01,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:01,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:01,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:01,345 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:01,353 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 04:16:01,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,357 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 04:16:01,359 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 04:16:01,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:01,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:01,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:01,372 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:01,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:01,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,380 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 04:16:01,380 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 04:16:01,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:01,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:01,396 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 04:16:01,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,398 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 04:16:01,398 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 04:16:01,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:16:01,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:01,420 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:16:01,423 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 04:16:01,423 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:01,423 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:01,423 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:01,423 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:01,424 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:16:01,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:01,424 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:01,424 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2023-02-17 04:16:01,424 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:01,424 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:01,425 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 04:16:01,427 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 04:16:01,428 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 04:16:01,428 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 04:16:01,433 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:01,436 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:16:01,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,451 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 04:16:01,452 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 04:16:01,453 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 04:16:01,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:01,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:01,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:01,460 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-17 04:16:01,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:01,465 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-17 04:16:01,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:01,485 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:01,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:01,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,489 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 04:16:01,490 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 04:16:01,492 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 04:16:01,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:01,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:01,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:16:01,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:01,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:16:01,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:16:01,529 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:01,534 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 04:16:01,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,535 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 04:16:01,537 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 04:16:01,539 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 04:16:01,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:01,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:01,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:16:01,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:01,547 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:16:01,548 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:16:01,555 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:01,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-02-17 04:16:01,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,560 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 04:16:01,561 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 04:16:01,564 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 04:16:01,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:01,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:01,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:01,577 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-17 04:16:01,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:01,579 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-17 04:16:01,579 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:01,601 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:16:01,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-17 04:16:01,604 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 04:16:01,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,653 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 04:16:01,655 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 04:16:01,656 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:16:01,657 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:16:01,657 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:16:01,657 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-17 04:16:01,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:01,662 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:16:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:01,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:16:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:01,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:01,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:01,704 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 04:16:01,707 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:16:01,708 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:01,746 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 51 transitions. Complement of second has 7 states. [2023-02-17 04:16:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-17 04:16:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-02-17 04:16:01,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-17 04:16:01,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:01,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2023-02-17 04:16:01,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:01,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2023-02-17 04:16:01,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:01,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 51 transitions. [2023-02-17 04:16:01,756 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2023-02-17 04:16:01,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 30 states and 44 transitions. [2023-02-17 04:16:01,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-02-17 04:16:01,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2023-02-17 04:16:01,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2023-02-17 04:16:01,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:01,759 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 44 transitions. [2023-02-17 04:16:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2023-02-17 04:16:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2023-02-17 04:16:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2023-02-17 04:16:01,767 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2023-02-17 04:16:01,767 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2023-02-17 04:16:01,767 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-17 04:16:01,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2023-02-17 04:16:01,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-02-17 04:16:01,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:01,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:01,769 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 04:16:01,769 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:01,769 INFO L748 eck$LassoCheckResult]: Stem: 166#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 167#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 169#L18-1 assume !!(main_~i~0#1 > 0); 163#L12 [2023-02-17 04:16:01,769 INFO L750 eck$LassoCheckResult]: Loop: 163#L12 assume !(1 == main_~i~0#1); 179#L12-2 assume !(10 == main_~i~0#1); 168#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 162#L18-1 assume !!(main_~i~0#1 > 0); 163#L12 [2023-02-17 04:16:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-17 04:16:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539016672] [2023-02-17 04:16:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,775 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,777 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1422198, now seen corresponding path program 1 times [2023-02-17 04:16:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748751882] [2023-02-17 04:16:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,799 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,814 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 04:16:01,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1810726045, now seen corresponding path program 1 times [2023-02-17 04:16:01,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:01,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184681790] [2023-02-17 04:16:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:01,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:01,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:01,837 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:01,837 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:01,837 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:01,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:01,837 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:01,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:01,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:01,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2023-02-17 04:16:01,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:01,853 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:01,855 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 04:16:01,857 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 04:16:01,862 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 04:16:01,864 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 04:16:01,869 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:01,869 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:16:01,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,883 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 04:16:01,888 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 04:16:01,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:01,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:01,901 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:01,901 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:01,904 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 04:16:01,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,906 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 04:16:01,906 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 04:16:01,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:01,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:01,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:01,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,922 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 04:16:01,924 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 04:16:01,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:16:01,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:01,973 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:16:01,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-02-17 04:16:01,977 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:01,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:01,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:01,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:01,977 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:16:01,977 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,977 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:01,977 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:01,977 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2023-02-17 04:16:01,977 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:01,977 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:01,979 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 04:16:01,981 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 04:16:01,983 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 04:16:01,983 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 04:16:01,986 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:01,986 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:16:01,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:01,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:01,988 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 04:16:01,992 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 04:16:01,992 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 04:16:01,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:01,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:01,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:16:01,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:02,001 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:16:02,001 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:16:02,033 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:02,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:02,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,054 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 04:16:02,056 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 04:16:02,058 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 04:16:02,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:02,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:02,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:02,065 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-02-17 04:16:02,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:02,069 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2023-02-17 04:16:02,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:02,088 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:16:02,094 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-17 04:16:02,094 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-17 04:16:02,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,098 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 04:16:02,100 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 04:16:02,102 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:16:02,102 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:16:02,102 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:16:02,102 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-17 04:16:02,108 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 04:16:02,109 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:16:02,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:02,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:16:02,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:02,125 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:02,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:02,153 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 04:16:02,154 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:16:02,154 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:02,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 59 transitions. Complement of second has 7 states. [2023-02-17 04:16:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-17 04:16:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-17 04:16:02,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2023-02-17 04:16:02,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:02,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2023-02-17 04:16:02,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:02,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2023-02-17 04:16:02,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:02,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 59 transitions. [2023-02-17 04:16:02,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-02-17 04:16:02,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 32 states and 49 transitions. [2023-02-17 04:16:02,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-02-17 04:16:02,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-02-17 04:16:02,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2023-02-17 04:16:02,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:02,203 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2023-02-17 04:16:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2023-02-17 04:16:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-17 04:16:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.53125) internal successors, (49), 31 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 49 transitions. [2023-02-17 04:16:02,208 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2023-02-17 04:16:02,208 INFO L428 stractBuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2023-02-17 04:16:02,208 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-17 04:16:02,208 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 49 transitions. [2023-02-17 04:16:02,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-02-17 04:16:02,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:02,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:02,210 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-02-17 04:16:02,210 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:02,210 INFO L748 eck$LassoCheckResult]: Stem: 275#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 279#L18-1 assume !!(main_~i~0#1 > 0); 282#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 284#L12-2 assume !(10 == main_~i~0#1); 289#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 290#L18-1 [2023-02-17 04:16:02,210 INFO L750 eck$LassoCheckResult]: Loop: 290#L18-1 assume !!(main_~i~0#1 > 0); 297#L12 assume !(1 == main_~i~0#1); 291#L12-2 assume !(10 == main_~i~0#1); 292#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 290#L18-1 [2023-02-17 04:16:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:02,211 INFO L85 PathProgramCache]: Analyzing trace with hash 889692586, now seen corresponding path program 1 times [2023-02-17 04:16:02,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:02,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201140042] [2023-02-17 04:16:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:02,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:02,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 1 times [2023-02-17 04:16:02,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:02,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734077938] [2023-02-17 04:16:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:02,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:02,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1068497811, now seen corresponding path program 1 times [2023-02-17 04:16:02,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:02,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125513002] [2023-02-17 04:16:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:02,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:02,268 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:02,268 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:02,268 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:02,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:02,268 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:02,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:02,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:02,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2023-02-17 04:16:02,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:02,268 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:02,269 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 04:16:02,270 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 04:16:02,271 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 04:16:02,272 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 04:16:02,274 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:02,274 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:16:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,275 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 04:16:02,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:02,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,295 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 04:16:02,309 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:02,309 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:02,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:02,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,316 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 04:16:02,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:02,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,332 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 04:16:02,349 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:02,349 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:02,352 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 04:16:02,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,353 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 04:16:02,354 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 04:16:02,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:02,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,374 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 04:16:02,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,376 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 04:16:02,383 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 04:16:02,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:16:02,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,418 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:02,418 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=11} Honda state: {ULTIMATE.start_main_~i~0#1=11} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0#1=0}, {ULTIMATE.start_main_~i~0#1=0}, {ULTIMATE.start_main_~i~0#1=1}] Lambdas: [0, 26, 1] Nus: [0, 0] [2023-02-17 04:16:02,421 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 04:16:02,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,423 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 04:16:02,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:02,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,444 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 04:16:02,457 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:02,457 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:02,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:02,469 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:02,469 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:02,469 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:02,469 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:02,469 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:02,469 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,469 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:02,469 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:02,469 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2023-02-17 04:16:02,469 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:02,469 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:02,470 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 04:16:02,471 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 04:16:02,473 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 04:16:02,473 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 04:16:02,474 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 04:16:02,475 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 04:16:02,476 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 04:16:02,479 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:02,479 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:16:02,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,480 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 04:16:02,483 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 04:16:02,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:02,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:02,513 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 04:16:02,519 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 04:16:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,520 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 04:16:02,521 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 04:16:02,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:02,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:02,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,545 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 04:16:02,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:16:02,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:02,565 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 04:16:02,575 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:16:02,580 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 04:16:02,580 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:02,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:02,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:02,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:02,580 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:16:02,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:02,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:02,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2023-02-17 04:16:02,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:02,580 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:02,582 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 04:16:02,583 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 04:16:02,584 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 04:16:02,585 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 04:16:02,586 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 04:16:02,587 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 04:16:02,589 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 04:16:02,592 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:02,592 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:16:02,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,595 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 04:16:02,610 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 04:16:02,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:02,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:02,616 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:02,616 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:16:02,616 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:02,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 04:16:02,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:02,621 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 04:16:02,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:02,634 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 04:16:02,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,635 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 04:16:02,638 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 04:16:02,640 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 04:16:02,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:02,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:02,646 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-02-17 04:16:02,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:02,672 INFO L401 nArgumentSynthesizer]: We have 48 Motzkin's Theorem applications. [2023-02-17 04:16:02,672 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2023-02-17 04:16:02,711 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:16:02,764 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2023-02-17 04:16:02,764 INFO L444 ModelExtractionUtils]: 1 out of 19 variables were initially zero. Simplification set additionally 13 variables to zero. [2023-02-17 04:16:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,768 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 04:16:02,768 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 04:16:02,770 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:16:02,795 INFO L438 nArgumentSynthesizer]: Removed 7 redundant supporting invariants from a total of 8. [2023-02-17 04:16:02,795 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:16:02,795 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 21 Supporting invariants [-1*ULTIMATE.start_main_~i~0#1 + 10 >= 0] [2023-02-17 04:16:02,803 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 04:16:02,805 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-02-17 04:16:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:02,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:02,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:02,839 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:16:02,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:02,849 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 04:16:02,850 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2023-02-17 04:16:02,850 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 49 transitions. cyclomatic complexity: 21 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:02,893 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 49 transitions. cyclomatic complexity: 21. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 68 transitions. Complement of second has 8 states. [2023-02-17 04:16:02,893 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 04:16:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2023-02-17 04:16:02,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 4 letters. [2023-02-17 04:16:02,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:02,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 10 letters. Loop has 4 letters. [2023-02-17 04:16:02,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:02,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 6 letters. Loop has 8 letters. [2023-02-17 04:16:02,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:02,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2023-02-17 04:16:02,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-02-17 04:16:02,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 45 states and 67 transitions. [2023-02-17 04:16:02,900 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2023-02-17 04:16:02,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-02-17 04:16:02,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 67 transitions. [2023-02-17 04:16:02,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:02,900 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 67 transitions. [2023-02-17 04:16:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 67 transitions. [2023-02-17 04:16:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2023-02-17 04:16:02,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 41 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2023-02-17 04:16:02,902 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 64 transitions. [2023-02-17 04:16:02,903 INFO L428 stractBuchiCegarLoop]: Abstraction has 42 states and 64 transitions. [2023-02-17 04:16:02,903 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-17 04:16:02,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 64 transitions. [2023-02-17 04:16:02,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-02-17 04:16:02,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:02,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:02,903 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 04:16:02,903 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:02,904 INFO L748 eck$LassoCheckResult]: Stem: 418#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 419#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 423#L18-1 assume !!(main_~i~0#1 > 0); 432#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 429#L12-2 assume !(10 == main_~i~0#1); 428#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 427#L18-1 assume !!(main_~i~0#1 > 0); 424#L12 assume !(1 == main_~i~0#1); 425#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 449#L15-1 [2023-02-17 04:16:02,904 INFO L750 eck$LassoCheckResult]: Loop: 449#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 414#L18-1 assume !!(main_~i~0#1 > 0); 415#L12 assume !(1 == main_~i~0#1); 448#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 449#L15-1 [2023-02-17 04:16:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash 588656997, now seen corresponding path program 1 times [2023-02-17 04:16:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:02,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777510955] [2023-02-17 04:16:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:16:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777510955] [2023-02-17 04:16:02,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777510955] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:16:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421807774] [2023-02-17 04:16:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:16:02,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:02,925 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:16:02,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-02-17 04:16:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:02,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 04:16:02,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:16:02,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:16:02,971 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 04:16:02,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:16:02,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421807774] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:16:02,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:16:02,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-17 04:16:02,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008002381] [2023-02-17 04:16:02,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:16:02,980 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-17 04:16:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1768756, now seen corresponding path program 2 times [2023-02-17 04:16:02,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:02,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381381510] [2023-02-17 04:16:02,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:02,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:02,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:02,989 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:02,989 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:02,989 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:02,989 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:02,989 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:02,989 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,989 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:02,989 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:02,989 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2023-02-17 04:16:02,989 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:02,989 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:02,990 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 04:16:02,993 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 04:16:02,993 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 04:16:02,994 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 04:16:02,997 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:02,997 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:16:02,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:02,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,001 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 04:16:03,004 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 04:16:03,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:03,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,039 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 04:16:03,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,041 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 04:16:03,043 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 04:16:03,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:16:03,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,109 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:16:03,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:03,112 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:03,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:03,112 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:03,112 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:03,112 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:16:03,112 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,112 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:03,112 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:03,112 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2023-02-17 04:16:03,112 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:03,112 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:03,113 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 04:16:03,114 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 04:16:03,115 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 04:16:03,116 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 04:16:03,118 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:03,118 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:16:03,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,119 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 04:16:03,125 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 04:16:03,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:03,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:03,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:03,131 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-17 04:16:03,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:03,133 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-17 04:16:03,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:03,136 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 04:16:03,145 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:16:03,147 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-17 04:16:03,147 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 04:16:03,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,148 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 04:16:03,150 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 04:16:03,152 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:16:03,152 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:16:03,152 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:16:03,152 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-17 04:16:03,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-02-17 04:16:03,157 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:16:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,186 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 04:16:03,187 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:16:03,187 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 27 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,205 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 64 transitions. cyclomatic complexity: 27. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 105 states and 160 transitions. Complement of second has 7 states. [2023-02-17 04:16:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-17 04:16:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-17 04:16:03,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-02-17 04:16:03,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2023-02-17 04:16:03,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2023-02-17 04:16:03,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,206 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 160 transitions. [2023-02-17 04:16:03,213 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-02-17 04:16:03,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 87 states and 133 transitions. [2023-02-17 04:16:03,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2023-02-17 04:16:03,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2023-02-17 04:16:03,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 133 transitions. [2023-02-17 04:16:03,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:03,215 INFO L218 hiAutomatonCegarLoop]: Abstraction has 87 states and 133 transitions. [2023-02-17 04:16:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 133 transitions. [2023-02-17 04:16:03,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2023-02-17 04:16:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 81 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 127 transitions. [2023-02-17 04:16:03,219 INFO L240 hiAutomatonCegarLoop]: Abstraction has 82 states and 127 transitions. [2023-02-17 04:16:03,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:16:03,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 04:16:03,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-17 04:16:03,219 INFO L87 Difference]: Start difference. First operand 82 states and 127 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:16:03,254 INFO L93 Difference]: Finished difference Result 160 states and 239 transitions. [2023-02-17 04:16:03,254 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 239 transitions. [2023-02-17 04:16:03,255 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2023-02-17 04:16:03,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 160 states and 239 transitions. [2023-02-17 04:16:03,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2023-02-17 04:16:03,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2023-02-17 04:16:03,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 239 transitions. [2023-02-17 04:16:03,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:03,257 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 239 transitions. [2023-02-17 04:16:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 239 transitions. [2023-02-17 04:16:03,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 136. [2023-02-17 04:16:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 136 states have (on average 1.5220588235294117) internal successors, (207), 135 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 207 transitions. [2023-02-17 04:16:03,265 INFO L240 hiAutomatonCegarLoop]: Abstraction has 136 states and 207 transitions. [2023-02-17 04:16:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 04:16:03,266 INFO L428 stractBuchiCegarLoop]: Abstraction has 136 states and 207 transitions. [2023-02-17 04:16:03,266 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-02-17 04:16:03,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 136 states and 207 transitions. [2023-02-17 04:16:03,267 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2023-02-17 04:16:03,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:03,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:03,267 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2023-02-17 04:16:03,267 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:03,267 INFO L748 eck$LassoCheckResult]: Stem: 920#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 921#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 926#L18-1 assume !!(main_~i~0#1 > 0); 985#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 945#L12-2 assume !(10 == main_~i~0#1); 946#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 994#L18-1 assume !!(main_~i~0#1 > 0); 991#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 944#L12-2 assume !(10 == main_~i~0#1); 983#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 964#L18-1 [2023-02-17 04:16:03,269 INFO L750 eck$LassoCheckResult]: Loop: 964#L18-1 assume !!(main_~i~0#1 > 0); 978#L12 assume !(1 == main_~i~0#1); 957#L12-2 assume !(10 == main_~i~0#1); 969#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 964#L18-1 [2023-02-17 04:16:03,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1068495891, now seen corresponding path program 1 times [2023-02-17 04:16:03,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:03,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933913075] [2023-02-17 04:16:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:03,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:16:03,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933913075] [2023-02-17 04:16:03,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933913075] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:16:03,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:16:03,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:16:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568282094] [2023-02-17 04:16:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:16:03,302 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-17 04:16:03,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1267308, now seen corresponding path program 2 times [2023-02-17 04:16:03,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:03,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078501913] [2023-02-17 04:16:03,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:03,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:03,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:03,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:03,314 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:03,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:03,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:03,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:03,314 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:03,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,314 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:03,314 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:03,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration7_Loop [2023-02-17 04:16:03,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:03,315 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:03,316 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 04:16:03,318 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 04:16:03,319 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 04:16:03,320 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 04:16:03,322 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:03,322 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:16:03,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,326 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 04:16:03,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:03,339 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,348 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 04:16:03,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-02-17 04:16:03,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,360 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 04:16:03,362 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 04:16:03,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:16:03,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,385 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:16:03,390 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 04:16:03,390 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:03,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:03,390 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:03,390 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:03,390 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:16:03,390 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:03,390 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:03,390 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration7_Loop [2023-02-17 04:16:03,390 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:03,390 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:03,391 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:16:03,392 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 04:16:03,393 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 04:16:03,393 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 04:16:03,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:03,396 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:16:03,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,401 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 04:16:03,403 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 04:16:03,404 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 04:16:03,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:03,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:03,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:03,410 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-02-17 04:16:03,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:03,413 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2023-02-17 04:16:03,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:03,429 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:16:03,431 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-17 04:16:03,431 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-17 04:16:03,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,433 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 04:16:03,434 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 04:16:03,435 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:16:03,435 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:16:03,435 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:16:03,436 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-17 04:16:03,441 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 04:16:03,441 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:16:03,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,458 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,462 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 04:16:03,463 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:16:03,463 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 136 states and 207 transitions. cyclomatic complexity: 82 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,480 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 136 states and 207 transitions. cyclomatic complexity: 82. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 248 states and 381 transitions. Complement of second has 5 states. [2023-02-17 04:16:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:16:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2023-02-17 04:16:03,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 4 letters. [2023-02-17 04:16:03,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2023-02-17 04:16:03,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 8 letters. [2023-02-17 04:16:03,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 248 states and 381 transitions. [2023-02-17 04:16:03,484 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2023-02-17 04:16:03,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 248 states to 224 states and 333 transitions. [2023-02-17 04:16:03,485 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 101 [2023-02-17 04:16:03,486 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2023-02-17 04:16:03,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 224 states and 333 transitions. [2023-02-17 04:16:03,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:03,486 INFO L218 hiAutomatonCegarLoop]: Abstraction has 224 states and 333 transitions. [2023-02-17 04:16:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states and 333 transitions. [2023-02-17 04:16:03,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 202. [2023-02-17 04:16:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 202 states have (on average 1.504950495049505) internal successors, (304), 201 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 304 transitions. [2023-02-17 04:16:03,492 INFO L240 hiAutomatonCegarLoop]: Abstraction has 202 states and 304 transitions. [2023-02-17 04:16:03,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:16:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:16:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:16:03,493 INFO L87 Difference]: Start difference. First operand 202 states and 304 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:16:03,505 INFO L93 Difference]: Finished difference Result 230 states and 313 transitions. [2023-02-17 04:16:03,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 230 states and 313 transitions. [2023-02-17 04:16:03,507 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 58 [2023-02-17 04:16:03,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 230 states to 230 states and 313 transitions. [2023-02-17 04:16:03,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2023-02-17 04:16:03,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2023-02-17 04:16:03,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 230 states and 313 transitions. [2023-02-17 04:16:03,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:03,509 INFO L218 hiAutomatonCegarLoop]: Abstraction has 230 states and 313 transitions. [2023-02-17 04:16:03,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states and 313 transitions. [2023-02-17 04:16:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 201. [2023-02-17 04:16:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 201 states have (on average 1.3830845771144278) internal successors, (278), 200 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2023-02-17 04:16:03,517 INFO L240 hiAutomatonCegarLoop]: Abstraction has 201 states and 278 transitions. [2023-02-17 04:16:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 04:16:03,517 INFO L428 stractBuchiCegarLoop]: Abstraction has 201 states and 278 transitions. [2023-02-17 04:16:03,518 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-02-17 04:16:03,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 201 states and 278 transitions. [2023-02-17 04:16:03,519 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2023-02-17 04:16:03,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:03,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:03,520 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 04:16:03,520 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 04:16:03,520 INFO L748 eck$LassoCheckResult]: Stem: 1798#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1799#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1802#L18-1 assume !!(main_~i~0#1 > 0); 1817#L12 assume !(1 == main_~i~0#1); 1820#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1819#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1815#L18-1 assume !!(main_~i~0#1 > 0); 1816#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 1949#L12-2 assume !(10 == main_~i~0#1); 1825#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1805#L18-1 assume !!(main_~i~0#1 > 0); 1806#L12 assume !(1 == main_~i~0#1); 1988#L12-2 assume !(10 == main_~i~0#1); 1809#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1793#L18-1 [2023-02-17 04:16:03,520 INFO L750 eck$LassoCheckResult]: Loop: 1793#L18-1 assume !!(main_~i~0#1 > 0); 1794#L12 assume !(1 == main_~i~0#1); 1803#L12-2 assume !(10 == main_~i~0#1); 1810#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1793#L18-1 [2023-02-17 04:16:03,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1454758974, now seen corresponding path program 1 times [2023-02-17 04:16:03,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:03,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451437775] [2023-02-17 04:16:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:03,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:16:03,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:03,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451437775] [2023-02-17 04:16:03,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451437775] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:16:03,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:16:03,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 04:16:03,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492498222] [2023-02-17 04:16:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:16:03,556 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-17 04:16:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1267308, now seen corresponding path program 3 times [2023-02-17 04:16:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:03,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496902849] [2023-02-17 04:16:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:03,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:03,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:03,563 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:03,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:03,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:03,563 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:03,563 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:03,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,563 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:03,563 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:03,564 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2023-02-17 04:16:03,564 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:03,564 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:03,564 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 04:16:03,565 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 04:16:03,566 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 04:16:03,566 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 04:16:03,568 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:03,568 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 04:16:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,577 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 04:16:03,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:03,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,589 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 04:16:03,592 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:03,592 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_12=1} Honda state: {v_rep~unnamed0~0~true_12=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:03,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-02-17 04:16:03,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,596 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 04:16:03,597 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 04:16:03,599 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:03,599 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:03,615 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=4} Honda state: {ULTIMATE.start_main_~up~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:03,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-02-17 04:16:03,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,619 INFO L229 MonitoredProcess]: Starting monitored process 39 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 04:16:03,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-02-17 04:16:03,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:03,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,635 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 04:16:03,635 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_12=0} Honda state: {v_rep~unnamed0~0~false_12=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 04:16:03,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:03,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,641 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 04:16:03,642 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 04:16:03,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 04:16:03,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,657 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 04:16:03,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,659 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 04:16:03,659 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 04:16:03,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 04:16:03,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 04:16:03,685 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 04:16:03,693 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 04:16:03,693 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:03,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:03,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:03,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:03,693 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 04:16:03,693 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,693 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:03,693 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:03,693 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2023-02-17 04:16:03,693 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:03,693 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:03,694 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 04:16:03,695 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 04:16:03,695 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 04:16:03,697 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 04:16:03,699 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 04:16:03,699 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 04:16:03,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,701 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 04:16:03,703 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 04:16:03,705 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 04:16:03,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:03,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:03,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:16:03,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:03,712 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:16:03,712 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:16:03,728 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:03,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-02-17 04:16:03,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,732 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 04:16:03,733 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 04:16:03,735 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 04:16:03,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:03,741 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:03,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:03,741 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-17 04:16:03,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:03,741 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-17 04:16:03,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:03,746 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:03,751 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 04:16:03,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,752 INFO L229 MonitoredProcess]: Starting monitored process 44 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 04:16:03,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-02-17 04:16:03,762 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 04:16:03,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:03,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:03,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 04:16:03,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:03,768 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 04:16:03,768 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 04:16:03,778 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 04:16:03,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-02-17 04:16:03,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,793 INFO L229 MonitoredProcess]: Starting monitored process 45 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 04:16:03,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-02-17 04:16:03,797 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 04:16:03,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 04:16:03,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 04:16:03,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 04:16:03,803 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2023-02-17 04:16:03,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 04:16:03,812 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2023-02-17 04:16:03,812 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 04:16:03,830 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 04:16:03,832 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-17 04:16:03,832 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-17 04:16:03,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:03,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:03,835 INFO L229 MonitoredProcess]: Starting monitored process 46 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 04:16:03,837 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 04:16:03,837 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 04:16:03,837 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 04:16:03,837 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-17 04:16:03,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-02-17 04:16:03,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-02-17 04:16:03,840 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 04:16:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,859 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,863 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 04:16:03,863 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:16:03,863 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 280 states and 401 transitions. Complement of second has 5 states. [2023-02-17 04:16:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:16:03,877 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2023-02-17 04:16:03,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2023-02-17 04:16:03,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,877 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 04:16:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,896 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,899 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 04:16:03,900 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:16:03,900 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,908 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 280 states and 401 transitions. Complement of second has 5 states. [2023-02-17 04:16:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:16:03,910 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2023-02-17 04:16:03,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 14 letters. Loop has 4 letters. [2023-02-17 04:16:03,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,910 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 04:16:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:03,932 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:03,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:03,936 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 04:16:03,936 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 04:16:03,936 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,952 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 201 states and 278 transitions. cyclomatic complexity: 94. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 334 states and 496 transitions. Complement of second has 4 states. [2023-02-17 04:16:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 04:16:03,952 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2023-02-17 04:16:03,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2023-02-17 04:16:03,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 18 letters. Loop has 4 letters. [2023-02-17 04:16:03,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 8 letters. [2023-02-17 04:16:03,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 04:16:03,954 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 334 states and 496 transitions. [2023-02-17 04:16:03,956 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2023-02-17 04:16:03,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 334 states to 268 states and 378 transitions. [2023-02-17 04:16:03,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 111 [2023-02-17 04:16:03,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2023-02-17 04:16:03,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 268 states and 378 transitions. [2023-02-17 04:16:03,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:03,958 INFO L218 hiAutomatonCegarLoop]: Abstraction has 268 states and 378 transitions. [2023-02-17 04:16:03,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states and 378 transitions. [2023-02-17 04:16:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 167. [2023-02-17 04:16:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.401197604790419) internal successors, (234), 166 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 234 transitions. [2023-02-17 04:16:03,969 INFO L240 hiAutomatonCegarLoop]: Abstraction has 167 states and 234 transitions. [2023-02-17 04:16:03,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:16:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 04:16:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 04:16:03,970 INFO L87 Difference]: Start difference. First operand 167 states and 234 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-02-17 04:16:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:16:03,993 INFO L93 Difference]: Finished difference Result 179 states and 246 transitions. [2023-02-17 04:16:03,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 179 states and 246 transitions. [2023-02-17 04:16:03,994 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 92 [2023-02-17 04:16:03,995 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 179 states to 177 states and 243 transitions. [2023-02-17 04:16:03,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 93 [2023-02-17 04:16:03,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 93 [2023-02-17 04:16:03,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 243 transitions. [2023-02-17 04:16:03,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:03,995 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 243 transitions. [2023-02-17 04:16:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 243 transitions. [2023-02-17 04:16:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 170. [2023-02-17 04:16:03,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 170 states have (on average 1.3764705882352941) internal successors, (234), 169 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 234 transitions. [2023-02-17 04:16:03,998 INFO L240 hiAutomatonCegarLoop]: Abstraction has 170 states and 234 transitions. [2023-02-17 04:16:03,998 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 04:16:03,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 04:16:04,000 INFO L428 stractBuchiCegarLoop]: Abstraction has 170 states and 234 transitions. [2023-02-17 04:16:04,000 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-02-17 04:16:04,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 170 states and 234 transitions. [2023-02-17 04:16:04,000 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2023-02-17 04:16:04,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:04,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:04,001 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 04:16:04,001 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1] [2023-02-17 04:16:04,001 INFO L748 eck$LassoCheckResult]: Stem: 3429#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3430#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3434#L18-1 assume !!(main_~i~0#1 > 0); 3555#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3533#L12-2 assume !(10 == main_~i~0#1); 3437#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3438#L18-1 assume !!(main_~i~0#1 > 0); 3560#L12 assume !(1 == main_~i~0#1); 3558#L12-2 assume !(10 == main_~i~0#1); 3556#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3442#L18-1 [2023-02-17 04:16:04,001 INFO L750 eck$LassoCheckResult]: Loop: 3442#L18-1 assume !!(main_~i~0#1 > 0); 3536#L12 assume !(1 == main_~i~0#1); 3475#L12-2 assume !(10 == main_~i~0#1); 3525#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3523#L18-1 assume !!(main_~i~0#1 > 0); 3520#L12 assume !(1 == main_~i~0#1); 3516#L12-2 assume !(10 == main_~i~0#1); 3440#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3442#L18-1 [2023-02-17 04:16:04,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1068497813, now seen corresponding path program 1 times [2023-02-17 04:16:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:04,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143179110] [2023-02-17 04:16:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:04,006 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 04:16:04,012 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 04:16:04,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:04,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143179110] [2023-02-17 04:16:04,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143179110] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:16:04,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:16:04,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 04:16:04,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640199835] [2023-02-17 04:16:04,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:16:04,012 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-17 04:16:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2142023595, now seen corresponding path program 1 times [2023-02-17 04:16:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:04,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427729281] [2023-02-17 04:16:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 04:16:04,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:04,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427729281] [2023-02-17 04:16:04,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427729281] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 04:16:04,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 04:16:04,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 04:16:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326902018] [2023-02-17 04:16:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 04:16:04,030 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-17 04:16:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:16:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 04:16:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 04:16:04,030 INFO L87 Difference]: Start difference. First operand 170 states and 234 transitions. cyclomatic complexity: 73 Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:16:04,035 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2023-02-17 04:16:04,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 118 transitions. [2023-02-17 04:16:04,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-02-17 04:16:04,037 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 84 states and 95 transitions. [2023-02-17 04:16:04,037 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-02-17 04:16:04,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2023-02-17 04:16:04,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 95 transitions. [2023-02-17 04:16:04,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:04,037 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84 states and 95 transitions. [2023-02-17 04:16:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 95 transitions. [2023-02-17 04:16:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2023-02-17 04:16:04,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 81 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2023-02-17 04:16:04,039 INFO L240 hiAutomatonCegarLoop]: Abstraction has 82 states and 93 transitions. [2023-02-17 04:16:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 04:16:04,039 INFO L428 stractBuchiCegarLoop]: Abstraction has 82 states and 93 transitions. [2023-02-17 04:16:04,040 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-02-17 04:16:04,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 93 transitions. [2023-02-17 04:16:04,040 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-02-17 04:16:04,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:04,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:04,041 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 1, 1, 1, 1] [2023-02-17 04:16:04,042 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2023-02-17 04:16:04,042 INFO L748 eck$LassoCheckResult]: Stem: 3711#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3712#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3714#L18-1 assume !!(main_~i~0#1 > 0); 3739#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3735#L12-2 assume !(10 == main_~i~0#1); 3734#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3733#L18-1 assume !!(main_~i~0#1 > 0); 3732#L12 assume !(1 == main_~i~0#1); 3731#L12-2 assume !(10 == main_~i~0#1); 3730#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3729#L18-1 assume !!(main_~i~0#1 > 0); 3728#L12 assume !(1 == main_~i~0#1); 3727#L12-2 assume !(10 == main_~i~0#1); 3726#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3725#L18-1 assume !!(main_~i~0#1 > 0); 3722#L12 assume !(1 == main_~i~0#1); 3724#L12-2 assume !(10 == main_~i~0#1); 3723#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3721#L18-1 assume !!(main_~i~0#1 > 0); 3720#L12 assume !(1 == main_~i~0#1); 3719#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3713#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3709#L18-1 assume !!(main_~i~0#1 > 0); 3710#L12 assume !(1 == main_~i~0#1); 3704#L12-2 assume !(10 == main_~i~0#1); 3706#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3783#L18-1 assume !!(main_~i~0#1 > 0); 3782#L12 [2023-02-17 04:16:04,042 INFO L750 eck$LassoCheckResult]: Loop: 3782#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 3702#L12-2 assume !(10 == main_~i~0#1); 3703#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3707#L18-1 assume !!(main_~i~0#1 > 0); 3708#L12 assume !(1 == main_~i~0#1); 3715#L12-2 assume !(10 == main_~i~0#1); 3781#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3780#L18-1 assume !!(main_~i~0#1 > 0); 3779#L12 assume !(1 == main_~i~0#1); 3778#L12-2 assume !(10 == main_~i~0#1); 3777#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3776#L18-1 assume !!(main_~i~0#1 > 0); 3775#L12 assume !(1 == main_~i~0#1); 3774#L12-2 assume !(10 == main_~i~0#1); 3749#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3745#L18-1 assume !!(main_~i~0#1 > 0); 3737#L12 assume !(1 == main_~i~0#1); 3738#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3716#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3717#L18-1 assume !!(main_~i~0#1 > 0); 3710#L12 assume !(1 == main_~i~0#1); 3704#L12-2 assume !(10 == main_~i~0#1); 3706#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3783#L18-1 assume !!(main_~i~0#1 > 0); 3782#L12 [2023-02-17 04:16:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash -608617554, now seen corresponding path program 2 times [2023-02-17 04:16:04,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:04,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447453152] [2023-02-17 04:16:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:16:04,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:04,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447453152] [2023-02-17 04:16:04,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447453152] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:16:04,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740913686] [2023-02-17 04:16:04,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 04:16:04,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:16:04,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:04,101 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:16:04,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-02-17 04:16:04,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 04:16:04,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:16:04,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:16:04,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:16:04,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:16:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:16:04,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740913686] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:16:04,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:16:04,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-02-17 04:16:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731000474] [2023-02-17 04:16:04,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:16:04,186 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-17 04:16:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:04,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1118663673, now seen corresponding path program 1 times [2023-02-17 04:16:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:04,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227320417] [2023-02-17 04:16:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:16:04,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:04,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227320417] [2023-02-17 04:16:04,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227320417] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:16:04,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154060507] [2023-02-17 04:16:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:16:04,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:04,239 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:16:04,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-02-17 04:16:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:04,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 04:16:04,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:16:04,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:16:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 04:16:04,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154060507] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:16:04,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:16:04,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-02-17 04:16:04,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400151487] [2023-02-17 04:16:04,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:16:04,354 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-17 04:16:04,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 04:16:04,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 04:16:04,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-02-17 04:16:04,354 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. cyclomatic complexity: 17 Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 04:16:04,391 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2023-02-17 04:16:04,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 169 states and 180 transitions. [2023-02-17 04:16:04,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-02-17 04:16:04,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 169 states to 149 states and 160 transitions. [2023-02-17 04:16:04,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2023-02-17 04:16:04,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2023-02-17 04:16:04,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 160 transitions. [2023-02-17 04:16:04,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 04:16:04,393 INFO L218 hiAutomatonCegarLoop]: Abstraction has 149 states and 160 transitions. [2023-02-17 04:16:04,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states and 160 transitions. [2023-02-17 04:16:04,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 142. [2023-02-17 04:16:04,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 142 states have (on average 1.0774647887323943) internal successors, (153), 141 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 04:16:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2023-02-17 04:16:04,394 INFO L240 hiAutomatonCegarLoop]: Abstraction has 142 states and 153 transitions. [2023-02-17 04:16:04,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 04:16:04,395 INFO L428 stractBuchiCegarLoop]: Abstraction has 142 states and 153 transitions. [2023-02-17 04:16:04,395 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-02-17 04:16:04,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 142 states and 153 transitions. [2023-02-17 04:16:04,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 46 [2023-02-17 04:16:04,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 04:16:04,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 04:16:04,398 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 10, 9, 2, 1, 1, 1, 1] [2023-02-17 04:16:04,398 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2023-02-17 04:16:04,399 INFO L748 eck$LassoCheckResult]: Stem: 4278#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 4279#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4282#L18-1 assume !!(main_~i~0#1 > 0); 4384#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 4270#L12-2 assume !(10 == main_~i~0#1); 4271#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4370#L18-1 assume !!(main_~i~0#1 > 0); 4369#L12 assume !(1 == main_~i~0#1); 4368#L12-2 assume !(10 == main_~i~0#1); 4367#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4366#L18-1 assume !!(main_~i~0#1 > 0); 4365#L12 assume !(1 == main_~i~0#1); 4364#L12-2 assume !(10 == main_~i~0#1); 4363#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4362#L18-1 assume !!(main_~i~0#1 > 0); 4361#L12 assume !(1 == main_~i~0#1); 4360#L12-2 assume !(10 == main_~i~0#1); 4359#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4358#L18-1 assume !!(main_~i~0#1 > 0); 4357#L12 assume !(1 == main_~i~0#1); 4356#L12-2 assume !(10 == main_~i~0#1); 4355#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4354#L18-1 assume !!(main_~i~0#1 > 0); 4353#L12 assume !(1 == main_~i~0#1); 4352#L12-2 assume !(10 == main_~i~0#1); 4351#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4350#L18-1 assume !!(main_~i~0#1 > 0); 4349#L12 assume !(1 == main_~i~0#1); 4348#L12-2 assume !(10 == main_~i~0#1); 4347#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4346#L18-1 assume !!(main_~i~0#1 > 0); 4345#L12 assume !(1 == main_~i~0#1); 4344#L12-2 assume !(10 == main_~i~0#1); 4343#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4342#L18-1 assume !!(main_~i~0#1 > 0); 4292#L12 assume !(1 == main_~i~0#1); 4296#L12-2 assume !(10 == main_~i~0#1); 4293#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4291#L18-1 assume !!(main_~i~0#1 > 0); 4290#L12 assume !(1 == main_~i~0#1); 4289#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4280#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4281#L18-1 assume !!(main_~i~0#1 > 0); 4338#L12 assume !(1 == main_~i~0#1); 4340#L12-2 assume !(10 == main_~i~0#1); 4339#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4337#L18-1 assume !!(main_~i~0#1 > 0); 4336#L12 [2023-02-17 04:16:04,400 INFO L750 eck$LassoCheckResult]: Loop: 4336#L12 assume 1 == main_~i~0#1;main_~up~0#1 := 1; 4335#L12-2 assume !(10 == main_~i~0#1); 4334#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4333#L18-1 assume !!(main_~i~0#1 > 0); 4332#L12 assume !(1 == main_~i~0#1); 4331#L12-2 assume !(10 == main_~i~0#1); 4330#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4329#L18-1 assume !!(main_~i~0#1 > 0); 4328#L12 assume !(1 == main_~i~0#1); 4327#L12-2 assume !(10 == main_~i~0#1); 4326#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4325#L18-1 assume !!(main_~i~0#1 > 0); 4324#L12 assume !(1 == main_~i~0#1); 4323#L12-2 assume !(10 == main_~i~0#1); 4322#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4321#L18-1 assume !!(main_~i~0#1 > 0); 4320#L12 assume !(1 == main_~i~0#1); 4319#L12-2 assume !(10 == main_~i~0#1); 4318#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4317#L18-1 assume !!(main_~i~0#1 > 0); 4316#L12 assume !(1 == main_~i~0#1); 4315#L12-2 assume !(10 == main_~i~0#1); 4314#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4313#L18-1 assume !!(main_~i~0#1 > 0); 4312#L12 assume !(1 == main_~i~0#1); 4311#L12-2 assume !(10 == main_~i~0#1); 4310#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4309#L18-1 assume !!(main_~i~0#1 > 0); 4308#L12 assume !(1 == main_~i~0#1); 4307#L12-2 assume !(10 == main_~i~0#1); 4306#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4305#L18-1 assume !!(main_~i~0#1 > 0); 4304#L12 assume !(1 == main_~i~0#1); 4303#L12-2 assume !(10 == main_~i~0#1); 4301#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4297#L18-1 assume !!(main_~i~0#1 > 0); 4294#L12 assume !(1 == main_~i~0#1); 4295#L12-2 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4286#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4287#L18-1 assume !!(main_~i~0#1 > 0); 4338#L12 assume !(1 == main_~i~0#1); 4340#L12-2 assume !(10 == main_~i~0#1); 4339#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4337#L18-1 assume !!(main_~i~0#1 > 0); 4336#L12 [2023-02-17 04:16:04,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:04,400 INFO L85 PathProgramCache]: Analyzing trace with hash -733322943, now seen corresponding path program 3 times [2023-02-17 04:16:04,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:04,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804067322] [2023-02-17 04:16:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:04,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:04,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash 491326234, now seen corresponding path program 2 times [2023-02-17 04:16:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:04,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788727089] [2023-02-17 04:16:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:04,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 04:16:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 04:16:04,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 04:16:04,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 04:16:04,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1133081510, now seen corresponding path program 4 times [2023-02-17 04:16:04,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 04:16:04,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757764713] [2023-02-17 04:16:04,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 04:16:04,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 04:16:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 04:16:04,480 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2023-02-17 04:16:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 04:16:04,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757764713] [2023-02-17 04:16:04,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757764713] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 04:16:04,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683709681] [2023-02-17 04:16:04,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 04:16:04,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 04:16:04,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 04:16:04,482 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 04:16:04,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-02-17 04:16:04,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 04:16:04,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 04:16:04,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 04:16:04,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 04:16:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2023-02-17 04:16:04,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 04:16:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 562 proven. 3 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2023-02-17 04:16:04,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683709681] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 04:16:04,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 04:16:04,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-17 04:16:04,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322693493] [2023-02-17 04:16:04,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 04:16:04,551 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 04:16:04,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 04:16:04,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 04:16:04,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 04:16:04,552 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 04:16:04,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 04:16:04,552 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 04:16:04,552 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 04:16:04,552 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration11_Loop [2023-02-17 04:16:04,552 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 04:16:04,552 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 04:16:04,553 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 04:16:04,555 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 04:16:04,556 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 04:16:04,557 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 04:16:04,559 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2023-02-17 04:16:21,531 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 1048576 conjuctions. This might take some time...