./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e8d55036 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-crafted-lit/GopanReps-CAV2006-Fig1a.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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:13:35,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:13:35,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:13:35,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:13:35,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:13:35,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:13:35,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:13:35,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:13:35,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:13:35,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:13:35,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:13:35,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:13:35,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:13:35,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:13:35,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:13:35,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:13:35,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:13:35,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:13:35,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:13:35,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:13:35,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:13:35,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:13:35,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:13:35,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:13:35,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:13:35,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:13:35,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:13:35,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:13:35,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:13:35,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:13:35,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:13:35,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:13:35,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:13:35,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:13:35,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:13:35,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:13:35,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:13:35,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:13:35,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:13:35,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:13:35,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:13:35,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 23:13:35,129 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:13:35,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:13:35,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:13:35,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:13:35,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:13:35,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:13:35,135 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:13:35,135 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 23:13:35,135 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 23:13:35,136 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 23:13:35,136 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 23:13:35,137 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 23:13:35,137 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 23:13:35,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:13:35,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:13:35,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:13:35,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:13:35,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 23:13:35,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 23:13:35,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 23:13:35,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:13:35,138 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 23:13:35,139 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:13:35,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 23:13:35,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:13:35,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:13:35,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:13:35,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:13:35,141 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 23:13:35,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2023-02-15 23:13:35,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:13:35,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:13:35,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:13:35,393 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:13:35,394 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:13:35,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2023-02-15 23:13:36,601 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:13:36,792 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:13:36,794 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2023-02-15 23:13:36,799 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6c6f882/00bd08f577394e83ac80007cd1f80f14/FLAG131ca128a [2023-02-15 23:13:36,814 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6c6f882/00bd08f577394e83ac80007cd1f80f14 [2023-02-15 23:13:36,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:13:36,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:13:36,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:13:36,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:13:36,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:13:36,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:36,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196cb9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36, skipping insertion in model container [2023-02-15 23:13:36,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:36,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:13:36,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:13:36,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:13:36,969 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:13:36,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:13:36,993 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:13:36,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36 WrapperNode [2023-02-15 23:13:36,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:13:36,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:13:36,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:13:36,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:13:37,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,027 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-02-15 23:13:37,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:13:37,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:13:37,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:13:37,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:13:37,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:13:37,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:13:37,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:13:37,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:13:37,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (1/1) ... [2023-02-15 23:13:37,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:37,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:37,075 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) [2023-02-15 23:13:37,077 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 [2023-02-15 23:13:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:13:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:13:37,172 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:13:37,175 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:13:37,255 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:13:37,263 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:13:37,263 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 23:13:37,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:13:37 BoogieIcfgContainer [2023-02-15 23:13:37,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:13:37,266 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 23:13:37,267 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 23:13:37,270 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 23:13:37,270 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:13:37,271 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 11:13:36" (1/3) ... [2023-02-15 23:13:37,271 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f58b6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:13:37, skipping insertion in model container [2023-02-15 23:13:37,272 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:13:37,272 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:36" (2/3) ... [2023-02-15 23:13:37,272 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f58b6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:13:37, skipping insertion in model container [2023-02-15 23:13:37,272 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:13:37,273 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:13:37" (3/3) ... [2023-02-15 23:13:37,274 INFO L332 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2023-02-15 23:13:37,350 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 23:13:37,350 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 23:13:37,350 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 23:13:37,351 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 23:13:37,351 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 23:13:37,351 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 23:13:37,351 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 23:13:37,351 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 23:13:37,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2023-02-15 23:13:37,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:13:37,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:13:37,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:13:37,377 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:13:37,378 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:13:37,378 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 23:13:37,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2023-02-15 23:13:37,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:13:37,380 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:13:37,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:13:37,380 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:13:37,381 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:13:37,387 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 5#L18-2true [2023-02-15 23:13:37,388 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~y~0#1 >= 0); 9#L19true assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 2#L19-2true main_~x~0#1 := 1 + main_~x~0#1; 5#L18-2true [2023-02-15 23:13:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 23:13:37,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:37,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408940373] [2023-02-15 23:13:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:37,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:37,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:37,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2023-02-15 23:13:37,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:37,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792591653] [2023-02-15 23:13:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:37,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:37,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:37,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:37,522 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2023-02-15 23:13:37,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:37,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885975093] [2023-02-15 23:13:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:37,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:13:37,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885975093] [2023-02-15 23:13:37,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885975093] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:13:37,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:13:37,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:13:37,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526842792] [2023-02-15 23:13:37,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:13:37,681 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:37,682 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:37,682 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:37,682 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:37,682 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:13:37,682 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:37,682 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:37,683 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:37,683 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2023-02-15 23:13:37,683 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:37,683 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:37,698 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:37,712 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:37,716 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:37,720 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:37,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:37,786 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:13:37,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:37,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:37,793 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) [2023-02-15 23:13:37,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:37,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:37,813 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 [2023-02-15 23:13:37,842 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 [2023-02-15 23:13:37,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:37,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:37,849 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) [2023-02-15 23:13:37,851 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 [2023-02-15 23:13:37,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:37,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:37,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:37,882 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=51} Honda state: {ULTIMATE.start_main_~x~0#1=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [1, 1, 1] Nus: [0, 0] [2023-02-15 23:13:37,889 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 [2023-02-15 23:13:37,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:37,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:37,892 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) [2023-02-15 23:13:37,894 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 [2023-02-15 23:13:37,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:37,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:37,912 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:37,913 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:13:37,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-02-15 23:13:37,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:37,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:37,921 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) [2023-02-15 23:13:37,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:37,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:37,957 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 [2023-02-15 23:13:37,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:37,974 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: [] [2023-02-15 23:13:37,983 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 [2023-02-15 23:13:37,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:37,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:37,989 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) [2023-02-15 23:13:38,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:38,009 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:38,011 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 [2023-02-15 23:13:38,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-02-15 23:13:38,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,026 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) [2023-02-15 23:13:38,028 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 [2023-02-15 23:13:38,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:38,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:38,092 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:13:38,099 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 [2023-02-15 23:13:38,099 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:38,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:38,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:38,099 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:38,099 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:13:38,099 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,099 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:38,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:38,100 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2023-02-15 23:13:38,100 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:38,100 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:38,106 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,119 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,126 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,132 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,202 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:38,206 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:13:38,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,208 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) [2023-02-15 23:13:38,210 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 [2023-02-15 23:13:38,216 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 [2023-02-15 23:13:38,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:38,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:38,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:38,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:38,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:38,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:38,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:38,242 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:38,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-15 23:13:38,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,250 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) [2023-02-15 23:13:38,252 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 [2023-02-15 23:13:38,254 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 [2023-02-15 23:13:38,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:38,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:38,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:38,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:38,266 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:13:38,266 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:13:38,278 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:38,285 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 [2023-02-15 23:13:38,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,287 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) [2023-02-15 23:13:38,290 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 [2023-02-15 23:13:38,291 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 [2023-02-15 23:13:38,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:38,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:38,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:38,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:38,301 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:13:38,301 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:13:38,314 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:38,320 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 [2023-02-15 23:13:38,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,322 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) [2023-02-15 23:13:38,325 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 [2023-02-15 23:13:38,325 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 [2023-02-15 23:13:38,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:38,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:38,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:38,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:38,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:38,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:38,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:38,340 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:13:38,344 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:13:38,344 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:13:38,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,418 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) [2023-02-15 23:13:38,419 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 [2023-02-15 23:13:38,421 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:13:38,421 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:13:38,421 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:13:38,421 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-02-15 23:13:38,427 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 [2023-02-15 23:13:38,430 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:13:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:38,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:13:38,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:38,469 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:13:38,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:38,581 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-15 23:13:38,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:38,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 29 states and 36 transitions. Complement of second has 8 states. [2023-02-15 23:13:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-15 23:13:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2023-02-15 23:13:38,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 3 letters. [2023-02-15 23:13:38,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:38,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-15 23:13:38,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:38,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 6 letters. [2023-02-15 23:13:38,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:38,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2023-02-15 23:13:38,647 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:13:38,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2023-02-15 23:13:38,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-15 23:13:38,655 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-02-15 23:13:38,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2023-02-15 23:13:38,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:13:38,656 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-02-15 23:13:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2023-02-15 23:13:38,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-02-15 23:13:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2023-02-15 23:13:38,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2023-02-15 23:13:38,692 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2023-02-15 23:13:38,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:13:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:13:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:13:38,695 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:38,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:13:38,706 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2023-02-15 23:13:38,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2023-02-15 23:13:38,708 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:13:38,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2023-02-15 23:13:38,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-15 23:13:38,709 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-15 23:13:38,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2023-02-15 23:13:38,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:13:38,710 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-15 23:13:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2023-02-15 23:13:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-15 23:13:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2023-02-15 23:13:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-02-15 23:13:38,712 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-15 23:13:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:13:38,713 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-15 23:13:38,714 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 23:13:38,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-02-15 23:13:38,714 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:13:38,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:13:38,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:13:38,715 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-15 23:13:38,715 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:13:38,715 INFO L748 eck$LassoCheckResult]: Stem: 105#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 108#L18-2 assume !!(main_~y~0#1 >= 0); 107#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 102#L19-2 [2023-02-15 23:13:38,716 INFO L750 eck$LassoCheckResult]: Loop: 102#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 103#L18-2 assume !!(main_~y~0#1 >= 0); 104#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 102#L19-2 [2023-02-15 23:13:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-02-15 23:13:38,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:38,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421246128] [2023-02-15 23:13:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:38,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:38,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:38,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2023-02-15 23:13:38,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:38,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348370860] [2023-02-15 23:13:38,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:38,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:38,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1810662097, now seen corresponding path program 1 times [2023-02-15 23:13:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:38,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180160239] [2023-02-15 23:13:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:38,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:38,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:13:38,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180160239] [2023-02-15 23:13:38,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180160239] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:13:38,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752861262] [2023-02-15 23:13:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:38,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:13:38,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,827 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:13:38,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 23:13:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:38,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 23:13:38,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:38,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:13:38,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:38,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752861262] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:13:38,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:13:38,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-15 23:13:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216754735] [2023-02-15 23:13:38,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:13:38,926 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:38,926 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:38,926 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:38,926 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:38,926 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:13:38,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:38,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:38,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2023-02-15 23:13:38,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:38,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:38,929 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,933 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,942 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:38,986 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:38,986 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:13:38,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:38,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:38,989 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) [2023-02-15 23:13:39,004 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 [2023-02-15 23:13:39,005 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 [2023-02-15 23:13:39,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:39,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:39,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:39,021 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: [] [2023-02-15 23:13:39,025 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 [2023-02-15 23:13:39,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,026 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) [2023-02-15 23:13:39,028 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 [2023-02-15 23:13:39,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:39,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:39,043 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 [2023-02-15 23:13:39,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,044 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) [2023-02-15 23:13:39,047 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 [2023-02-15 23:13:39,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:39,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:39,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:39,072 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [1, 2, 9] Nus: [1, 1] [2023-02-15 23:13:39,076 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 [2023-02-15 23:13:39,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,078 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) [2023-02-15 23:13:39,079 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 [2023-02-15 23:13:39,081 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:39,081 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:39,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:39,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:13:39,122 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 [2023-02-15 23:13:39,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,123 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) [2023-02-15 23:13:39,129 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 [2023-02-15 23:13:39,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:39,132 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:39,161 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 [2023-02-15 23:13:39,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,163 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) [2023-02-15 23:13:39,171 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 [2023-02-15 23:13:39,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:39,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:39,196 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:13:39,207 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 [2023-02-15 23:13:39,208 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:39,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:39,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:39,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:39,208 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:13:39,208 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,208 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:39,208 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:39,208 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2023-02-15 23:13:39,208 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:39,208 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:39,209 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,216 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,219 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,224 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,276 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:39,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:13:39,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,278 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) [2023-02-15 23:13:39,295 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 [2023-02-15 23:13:39,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:39,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:39,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:39,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:39,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:39,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:39,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:39,308 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 [2023-02-15 23:13:39,313 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:39,317 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 [2023-02-15 23:13:39,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,319 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) [2023-02-15 23:13:39,320 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 [2023-02-15 23:13:39,322 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 [2023-02-15 23:13:39,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:39,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:39,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:39,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:39,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:13:39,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:13:39,334 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:39,345 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 [2023-02-15 23:13:39,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,348 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) [2023-02-15 23:13:39,349 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 [2023-02-15 23:13:39,351 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 [2023-02-15 23:13:39,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:39,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:39,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:39,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:39,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:39,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:39,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:39,385 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:13:39,387 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:13:39,387 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:13:39,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,389 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) [2023-02-15 23:13:39,397 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 [2023-02-15 23:13:39,446 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:13:39,446 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:13:39,446 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:13:39,446 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-02-15 23:13:39,452 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 [2023-02-15 23:13:39,453 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:13:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:39,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:13:39,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:39,479 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:13:39,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:39,506 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 [2023-02-15 23:13:39,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 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) [2023-02-15 23:13:39,527 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. 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 13 states and 16 transitions. Complement of second has 7 states. [2023-02-15 23:13:39,528 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 [2023-02-15 23:13:39,529 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) [2023-02-15 23:13:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2023-02-15 23:13:39,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2023-02-15 23:13:39,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:39,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2023-02-15 23:13:39,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:39,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2023-02-15 23:13:39,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:39,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2023-02-15 23:13:39,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:13:39,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2023-02-15 23:13:39,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-15 23:13:39,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-15 23:13:39,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2023-02-15 23:13:39,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:13:39,535 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-02-15 23:13:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2023-02-15 23:13:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-15 23:13:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-02-15 23:13:39,538 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-02-15 23:13:39,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:13:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:13:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:13:39,540 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2023-02-15 23:13:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:13:39,567 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-02-15 23:13:39,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2023-02-15 23:13:39,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:13:39,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2023-02-15 23:13:39,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-02-15 23:13:39,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-02-15 23:13:39,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2023-02-15 23:13:39,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:13:39,571 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-02-15 23:13:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2023-02-15 23:13:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-02-15 23:13:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-02-15 23:13:39,579 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-02-15 23:13:39,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:13:39,581 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-02-15 23:13:39,581 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-15 23:13:39,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2023-02-15 23:13:39,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 23:13:39,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:13:39,582 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:13:39,583 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2023-02-15 23:13:39,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:13:39,583 INFO L748 eck$LassoCheckResult]: Stem: 242#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 243#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 240#L18-2 assume !!(main_~y~0#1 >= 0); 241#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 238#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 239#L18-2 assume !!(main_~y~0#1 >= 0); 253#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 252#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 251#L18-2 assume !!(main_~y~0#1 >= 0); 250#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 249#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 248#L18-2 assume !!(main_~y~0#1 >= 0); 247#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 245#L19-2 [2023-02-15 23:13:39,583 INFO L750 eck$LassoCheckResult]: Loop: 245#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 246#L18-2 assume !!(main_~y~0#1 >= 0); 244#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 245#L19-2 [2023-02-15 23:13:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1702507665, now seen corresponding path program 1 times [2023-02-15 23:13:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:39,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664338324] [2023-02-15 23:13:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:39,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:39,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2023-02-15 23:13:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:39,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887212870] [2023-02-15 23:13:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:39,626 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:39,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:39,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash -137031896, now seen corresponding path program 2 times [2023-02-15 23:13:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:39,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54334264] [2023-02-15 23:13:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:39,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:39,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:13:39,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54334264] [2023-02-15 23:13:39,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54334264] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:13:39,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704949871] [2023-02-15 23:13:39,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:13:39,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:13:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,705 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:13:39,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-15 23:13:39,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:13:39,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:13:39,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:13:39,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:39,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:13:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:39,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704949871] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:13:39,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:13:39,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 23:13:39,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273470039] [2023-02-15 23:13:39,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:13:39,897 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:39,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:39,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:39,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:39,897 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:13:39,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,897 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:39,897 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:39,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2023-02-15 23:13:39,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:39,897 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:39,899 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,906 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,909 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,914 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:39,953 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:39,953 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:13:39,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,956 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) [2023-02-15 23:13:39,958 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 [2023-02-15 23:13:39,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:39,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:39,985 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 [2023-02-15 23:13:39,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:39,986 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) [2023-02-15 23:13:39,988 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 [2023-02-15 23:13:39,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:39,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:40,018 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [1, 2, 9] Nus: [1, 1] [2023-02-15 23:13:40,022 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 [2023-02-15 23:13:40,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,024 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) [2023-02-15 23:13:40,026 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 [2023-02-15 23:13:40,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:40,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,040 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:40,040 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: [] [2023-02-15 23:13:40,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-02-15 23:13:40,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,044 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:13:40,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-02-15 23:13:40,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:40,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-15 23:13:40,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,061 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) [2023-02-15 23:13:40,062 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 [2023-02-15 23:13:40,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:40,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,105 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:13:40,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-02-15 23:13:40,110 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:40,110 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:40,110 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:40,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:40,110 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:13:40,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:40,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:40,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2023-02-15 23:13:40,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:40,110 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:40,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,117 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,124 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:40,170 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:13:40,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,172 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) [2023-02-15 23:13:40,175 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 [2023-02-15 23:13:40,177 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 [2023-02-15 23:13:40,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:40,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:40,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:40,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:40,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:40,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:40,190 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:40,205 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:40,210 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 [2023-02-15 23:13:40,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,214 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) [2023-02-15 23:13:40,229 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 [2023-02-15 23:13:40,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:40,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:40,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:40,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:40,241 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:13:40,241 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:13:40,241 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 [2023-02-15 23:13:40,257 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:40,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-02-15 23:13:40,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,261 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) [2023-02-15 23:13:40,263 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 [2023-02-15 23:13:40,264 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 [2023-02-15 23:13:40,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:40,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:40,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:40,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:40,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:40,272 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:40,272 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:40,280 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:13:40,282 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:13:40,282 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:13:40,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,285 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) [2023-02-15 23:13:40,285 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 [2023-02-15 23:13:40,287 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:13:40,287 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:13:40,287 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:13:40,287 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-02-15 23:13:40,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-02-15 23:13:40,291 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:13:40,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:40,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:13:40,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:40,351 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:13:40,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:40,369 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 [2023-02-15 23:13:40,370 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:40,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 7 states. [2023-02-15 23:13:40,383 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 [2023-02-15 23:13:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2023-02-15 23:13:40,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2023-02-15 23:13:40,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:40,386 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:13:40,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:40,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:13:40,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:40,428 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:13:40,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:40,475 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 [2023-02-15 23:13:40,475 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:40,489 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 7 states. [2023-02-15 23:13:40,490 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 [2023-02-15 23:13:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2023-02-15 23:13:40,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2023-02-15 23:13:40,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:40,491 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:13:40,500 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 [2023-02-15 23:13:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:40,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:13:40,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:40,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-02-15 23:13:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:40,527 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:13:40,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:40,543 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 [2023-02-15 23:13:40,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:40,553 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 27 transitions. Complement of second has 6 states. [2023-02-15 23:13:40,553 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 [2023-02-15 23:13:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-02-15 23:13:40,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2023-02-15 23:13:40,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:40,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2023-02-15 23:13:40,555 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:40,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2023-02-15 23:13:40,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:40,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2023-02-15 23:13:40,556 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-15 23:13:40,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2023-02-15 23:13:40,557 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-02-15 23:13:40,557 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-02-15 23:13:40,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2023-02-15 23:13:40,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:13:40,557 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-15 23:13:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2023-02-15 23:13:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-02-15 23:13:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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) [2023-02-15 23:13:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-02-15 23:13:40,559 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-02-15 23:13:40,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:13:40,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 23:13:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-15 23:13:40,560 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-02-15 23:13:40,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:13:40,588 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2023-02-15 23:13:40,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2023-02-15 23:13:40,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-15 23:13:40,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2023-02-15 23:13:40,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2023-02-15 23:13:40,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2023-02-15 23:13:40,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2023-02-15 23:13:40,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:13:40,590 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-02-15 23:13:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2023-02-15 23:13:40,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-02-15 23:13:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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) [2023-02-15 23:13:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-02-15 23:13:40,593 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-02-15 23:13:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 23:13:40,594 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-02-15 23:13:40,594 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-15 23:13:40,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2023-02-15 23:13:40,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-15 23:13:40,595 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:13:40,595 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:13:40,596 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2023-02-15 23:13:40,596 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 23:13:40,596 INFO L748 eck$LassoCheckResult]: Stem: 670#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 671#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 673#L18-2 assume !!(main_~y~0#1 >= 0); 697#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 663#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 664#L18-2 assume !!(main_~y~0#1 >= 0); 668#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 672#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 696#L18-2 assume !!(main_~y~0#1 >= 0); 695#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 694#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 693#L18-2 assume !!(main_~y~0#1 >= 0); 692#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 691#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 690#L18-2 assume !!(main_~y~0#1 >= 0); 689#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 688#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 687#L18-2 assume !!(main_~y~0#1 >= 0); 686#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 685#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 684#L18-2 assume !!(main_~y~0#1 >= 0); 683#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 682#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 681#L18-2 assume !!(main_~y~0#1 >= 0); 680#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 679#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 678#L18-2 assume !!(main_~y~0#1 >= 0); 677#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 676#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2023-02-15 23:13:40,596 INFO L750 eck$LassoCheckResult]: Loop: 667#L18-2 assume !!(main_~y~0#1 >= 0); 675#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 674#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2023-02-15 23:13:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:40,597 INFO L85 PathProgramCache]: Analyzing trace with hash -191897876, now seen corresponding path program 2 times [2023-02-15 23:13:40,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:40,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261511246] [2023-02-15 23:13:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:40,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:40,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:40,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:40,620 INFO L85 PathProgramCache]: Analyzing trace with hash 40814, now seen corresponding path program 1 times [2023-02-15 23:13:40,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:40,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533260283] [2023-02-15 23:13:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:40,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:40,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:40,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:40,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash -228141917, now seen corresponding path program 3 times [2023-02-15 23:13:40,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:40,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154075319] [2023-02-15 23:13:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:40,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:40,637 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:40,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:40,663 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:40,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:40,664 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:40,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:40,664 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:13:40,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:40,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:40,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2023-02-15 23:13:40,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:40,664 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:40,665 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,670 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,674 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,677 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,709 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:40,709 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:13:40,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,711 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) [2023-02-15 23:13:40,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:40,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,731 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 [2023-02-15 23:13:40,752 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 [2023-02-15 23:13:40,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,753 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) [2023-02-15 23:13:40,756 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 [2023-02-15 23:13:40,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:40,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:13:40,782 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 15, 10] Nus: [0, 0] [2023-02-15 23:13:40,786 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 [2023-02-15 23:13:40,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,788 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) [2023-02-15 23:13:40,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:13:40,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,807 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 [2023-02-15 23:13:40,823 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 [2023-02-15 23:13:40,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,825 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) [2023-02-15 23:13:40,828 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 [2023-02-15 23:13:40,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:13:40,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:13:40,849 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:13:40,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-02-15 23:13:40,857 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:13:40,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:13:40,857 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:13:40,857 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:13:40,857 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:13:40,857 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,857 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:13:40,857 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:13:40,857 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2023-02-15 23:13:40,857 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:13:40,857 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:13:40,858 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,863 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,868 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,870 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:13:40,912 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:13:40,912 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:13:40,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,914 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) [2023-02-15 23:13:40,924 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 [2023-02-15 23:13:40,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:40,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:40,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:40,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:40,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:40,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:40,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:40,936 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 [2023-02-15 23:13:40,943 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:13:40,946 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 [2023-02-15 23:13:40,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:40,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:40,947 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) [2023-02-15 23:13:40,952 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 [2023-02-15 23:13:40,988 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 [2023-02-15 23:13:40,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:13:40,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:13:40,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:13:40,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:13:40,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:13:40,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:13:40,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:13:41,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:13:41,003 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:13:41,003 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:13:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:41,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:41,005 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) [2023-02-15 23:13:41,014 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 [2023-02-15 23:13:41,014 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:13:41,014 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:13:41,014 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:13:41,014 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 101 Supporting invariants [] [2023-02-15 23:13:41,020 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 [2023-02-15 23:13:41,021 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:13:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:41,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:13:41,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:13:41,101 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:13:41,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:13:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:13:41,123 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 [2023-02-15 23:13:41,123 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:41,134 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 65 transitions. Complement of second has 6 states. [2023-02-15 23:13:41,135 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 [2023-02-15 23:13:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:13:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-02-15 23:13:41,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2023-02-15 23:13:41,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:41,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2023-02-15 23:13:41,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:41,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2023-02-15 23:13:41,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:13:41,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2023-02-15 23:13:41,137 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 23:13:41,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2023-02-15 23:13:41,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 23:13:41,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 23:13:41,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 23:13:41,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 23:13:41,138 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:13:41,138 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:13:41,138 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 23:13:41,138 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-15 23:13:41,138 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-15 23:13:41,138 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 23:13:41,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-15 23:13:41,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 11:13:41 BoogieIcfgContainer [2023-02-15 23:13:41,144 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 23:13:41,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 23:13:41,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 23:13:41,145 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 23:13:41,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:13:37" (3/4) ... [2023-02-15 23:13:41,148 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 23:13:41,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 23:13:41,148 INFO L158 Benchmark]: Toolchain (without parser) took 4331.26ms. Allocated memory is still 140.5MB. Free memory was 95.3MB in the beginning and 65.4MB in the end (delta: 29.9MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2023-02-15 23:13:41,148 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:13:41,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.90ms. Allocated memory is still 140.5MB. Free memory was 95.3MB in the beginning and 86.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 23:13:41,149 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.61ms. Allocated memory is still 140.5MB. Free memory was 86.4MB in the beginning and 84.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:13:41,149 INFO L158 Benchmark]: Boogie Preprocessor took 18.38ms. Allocated memory is still 140.5MB. Free memory was 84.8MB in the beginning and 83.8MB in the end (delta: 970.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:13:41,149 INFO L158 Benchmark]: RCFGBuilder took 216.66ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 75.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 23:13:41,150 INFO L158 Benchmark]: BuchiAutomizer took 3878.09ms. Allocated memory is still 140.5MB. Free memory was 75.9MB in the beginning and 65.4MB in the end (delta: 10.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2023-02-15 23:13:41,150 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 140.5MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:13:41,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.90ms. Allocated memory is still 140.5MB. Free memory was 95.3MB in the beginning and 86.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.61ms. Allocated memory is still 140.5MB. Free memory was 86.4MB in the beginning and 84.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.38ms. Allocated memory is still 140.5MB. Free memory was 84.8MB in the beginning and 83.8MB in the end (delta: 970.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.66ms. Allocated memory is still 140.5MB. Free memory was 83.8MB in the beginning and 75.9MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3878.09ms. Allocated memory is still 140.5MB. Free memory was 75.9MB in the beginning and 65.4MB in the end (delta: 10.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 140.5MB. Free memory is still 65.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 101 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 46 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf94 smp100 dnf100 smp100 tf112 neg95 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-15 23:13:41,161 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 [2023-02-15 23:13:41,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-02-15 23:13:41,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-15 23:13:41,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE