./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.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 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:53:01,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:53:01,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:53:01,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:53:01,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:53:01,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:53:01,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:53:01,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:53:01,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:53:01,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:53:01,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:53:01,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:53:01,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:53:01,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:53:01,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:53:01,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:53:01,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:53:01,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:53:01,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:53:01,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:53:01,086 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:53:01,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:53:01,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:53:01,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:53:01,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:53:01,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:53:01,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:53:01,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:53:01,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:53:01,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:53:01,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:53:01,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:53:01,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:53:01,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:53:01,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:53:01,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:53:01,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:53:01,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:53:01,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:53:01,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:53:01,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:53:01,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:53:01,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 14:53:01,129 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:53:01,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:53:01,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:53:01,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:53:01,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:53:01,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:53:01,138 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:53:01,138 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 14:53:01,138 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 14:53:01,139 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 14:53:01,139 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 14:53:01,139 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 14:53:01,139 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 14:53:01,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:53:01,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:53:01,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:53:01,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:53:01,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 14:53:01,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 14:53:01,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 14:53:01,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:53:01,142 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 14:53:01,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:53:01,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 14:53:01,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:53:01,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:53:01,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:53:01,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:53:01,144 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 14:53:01,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2022-07-14 14:53:01,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:53:01,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:53:01,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:53:01,386 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:53:01,386 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:53:01,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2022-07-14 14:53:01,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f1f41f1/b9e37c12f4574da5abb3adbc59f2b84f/FLAG52dd71cbb [2022-07-14 14:53:01,783 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:53:01,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2022-07-14 14:53:01,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f1f41f1/b9e37c12f4574da5abb3adbc59f2b84f/FLAG52dd71cbb [2022-07-14 14:53:02,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f1f41f1/b9e37c12f4574da5abb3adbc59f2b84f [2022-07-14 14:53:02,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:53:02,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:53:02,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:53:02,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:53:02,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:53:02,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66698a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02, skipping insertion in model container [2022-07-14 14:53:02,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:53:02,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:53:02,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:53:02,379 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:53:02,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:53:02,398 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:53:02,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02 WrapperNode [2022-07-14 14:53:02,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:53:02,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:53:02,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:53:02,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:53:02,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,420 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-14 14:53:02,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:53:02,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:53:02,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:53:02,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:53:02,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:53:02,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:53:02,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:53:02,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:53:02,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (1/1) ... [2022-07-14 14:53:02,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:02,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:02,464 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) [2022-07-14 14:53:02,491 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 [2022-07-14 14:53:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:53:02,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:53:02,557 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:53:02,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:53:02,611 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:53:02,616 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:53:02,616 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 14:53:02,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:53:02 BoogieIcfgContainer [2022-07-14 14:53:02,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:53:02,618 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 14:53:02,618 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 14:53:02,620 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 14:53:02,621 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:53:02,621 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 02:53:02" (1/3) ... [2022-07-14 14:53:02,622 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54723743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:53:02, skipping insertion in model container [2022-07-14 14:53:02,623 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:53:02,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:53:02" (2/3) ... [2022-07-14 14:53:02,623 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54723743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:53:02, skipping insertion in model container [2022-07-14 14:53:02,623 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:53:02,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:53:02" (3/3) ... [2022-07-14 14:53:02,624 INFO L354 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2022-07-14 14:53:02,665 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 14:53:02,665 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 14:53:02,665 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 14:53:02,665 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 14:53:02,666 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 14:53:02,666 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 14:53:02,666 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 14:53:02,666 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 14:53:02,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:02,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 14:53:02,685 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:02,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:02,690 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:53:02,691 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:02,691 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 14:53:02,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:02,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-14 14:53:02,693 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:02,693 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:02,693 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:53:02,693 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:02,699 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 5#L18-1true [2022-07-14 14:53:02,699 INFO L754 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 10#L12true assume !(main_~i~0#1 >= 10); 2#L12-2true assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 7#L15-1true assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5#L18-1true [2022-07-14 14:53:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-14 14:53:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:02,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148778258] [2022-07-14 14:53:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:02,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:02,783 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:02,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2022-07-14 14:53:02,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:02,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359152057] [2022-07-14 14:53:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:02,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:02,841 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:02,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2022-07-14 14:53:02,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333907988] [2022-07-14 14:53:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:02,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:02,875 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:02,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:03,013 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:03,014 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:03,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:03,019 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:03,019 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:53:03,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:03,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:03,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2022-07-14 14:53:03,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:03,020 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:03,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,146 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:03,147 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:53:03,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,155 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) [2022-07-14 14:53:03,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:03,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:03,175 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 [2022-07-14 14:53:03,186 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:03,187 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: [] [2022-07-14 14:53:03,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-14 14:53:03,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,208 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) [2022-07-14 14:53:03,218 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 [2022-07-14 14:53:03,218 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:03,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:03,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:03,240 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: [] [2022-07-14 14:53:03,255 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 [2022-07-14 14:53:03,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,257 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) [2022-07-14 14:53:03,261 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 [2022-07-14 14:53:03,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:03,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:03,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:03,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,291 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) [2022-07-14 14:53:03,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:53:03,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:03,315 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 [2022-07-14 14:53:03,318 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:53:03,342 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 [2022-07-14 14:53:03,342 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:03,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:03,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:03,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:03,343 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:53:03,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:03,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:03,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2022-07-14 14:53:03,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:03,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:03,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,414 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:03,418 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:53:03,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,420 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) [2022-07-14 14:53:03,422 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 [2022-07-14 14:53:03,423 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 [2022-07-14 14:53:03,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:03,430 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:03,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:03,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:03,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:03,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:03,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:03,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:03,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:03,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,488 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) [2022-07-14 14:53:03,505 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 [2022-07-14 14:53:03,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:03,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:03,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:03,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:03,515 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:53:03,515 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:53:03,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:03,543 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 [2022-07-14 14:53:03,555 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 [2022-07-14 14:53:03,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,557 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) [2022-07-14 14:53:03,558 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 [2022-07-14 14:53:03,559 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 [2022-07-14 14:53:03,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:03,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:03,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:03,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:03,569 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:53:03,569 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:53:03,588 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:03,604 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 [2022-07-14 14:53:03,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,605 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) [2022-07-14 14:53:03,606 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 [2022-07-14 14:53:03,607 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 [2022-07-14 14:53:03,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:03,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:03,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:03,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:03,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:03,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:03,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:03,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:53:03,634 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:53:03,634 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:53:03,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:03,636 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) [2022-07-14 14:53:03,637 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 [2022-07-14 14:53:03,638 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:53:03,638 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:53:03,638 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:53:03,639 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-07-14 14:53:03,656 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 [2022-07-14 14:53:03,659 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:53:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:03,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:03,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:03,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:03,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:03,751 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:53:03,752 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:03,795 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 54 transitions. Complement of second has 8 states. [2022-07-14 14:53:03,797 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 [2022-07-14 14:53:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-07-14 14:53:03,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-14 14:53:03,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:03,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2022-07-14 14:53:03,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:03,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2022-07-14 14:53:03,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:03,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2022-07-14 14:53:03,807 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-14 14:53:03,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2022-07-14 14:53:03,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-07-14 14:53:03,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-07-14 14:53:03,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2022-07-14 14:53:03,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:03,812 INFO L369 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2022-07-14 14:53:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2022-07-14 14:53:03,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-07-14 14:53:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 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) [2022-07-14 14:53:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2022-07-14 14:53:03,832 INFO L392 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-07-14 14:53:03,832 INFO L374 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-07-14 14:53:03,832 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 14:53:03,832 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2022-07-14 14:53:03,833 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-14 14:53:03,833 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:03,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:03,834 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 14:53:03,834 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:03,834 INFO L752 eck$LassoCheckResult]: Stem: 98#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 99#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 104#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2022-07-14 14:53:03,834 INFO L754 eck$LassoCheckResult]: Loop: 106#L12 assume !(main_~i~0#1 >= 10); 92#L12-2 assume !(main_~i~0#1 <= 0); 94#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 108#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2022-07-14 14:53:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-14 14:53:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:03,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047152650] [2022-07-14 14:53:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:03,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:03,839 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:03,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2022-07-14 14:53:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739545031] [2022-07-14 14:53:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:03,847 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:03,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2022-07-14 14:53:03,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:03,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704706514] [2022-07-14 14:53:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:03,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:03,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704706514] [2022-07-14 14:53:03,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704706514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:53:03,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:53:03,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:53:03,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262740742] [2022-07-14 14:53:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:53:03,955 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:03,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:03,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:03,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:03,955 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:53:03,955 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:03,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:03,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:03,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2022-07-14 14:53:03,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:03,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:03,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-14 14:53:03,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:03,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,037 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:04,037 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:53:04,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,039 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) [2022-07-14 14:53:04,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:04,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:04,066 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 [2022-07-14 14:53:04,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:04,072 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: [] [2022-07-14 14:53:04,096 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 [2022-07-14 14:53:04,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,098 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) [2022-07-14 14:53:04,099 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 [2022-07-14 14:53:04,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:04,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:04,146 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 [2022-07-14 14:53:04,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:53:04,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:53:04,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:04,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-14 14:53:04,195 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:53:04,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:04,201 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:04,201 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:04,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:04,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:04,201 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:53:04,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:04,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:04,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2022-07-14 14:53:04,202 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:04,202 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:04,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,253 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:04,253 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:53:04,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,255 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) [2022-07-14 14:53:04,257 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 [2022-07-14 14:53:04,258 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 [2022-07-14 14:53:04,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:04,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:04,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:04,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:04,269 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:53:04,269 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:53:04,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:04,307 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 [2022-07-14 14:53:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,309 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) [2022-07-14 14:53:04,310 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 [2022-07-14 14:53:04,311 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 [2022-07-14 14:53:04,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:04,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:04,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:04,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:04,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:04,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:04,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:04,334 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:53:04,337 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:53:04,337 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:53:04,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,339 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) [2022-07-14 14:53:04,340 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 [2022-07-14 14:53:04,341 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:53:04,341 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:53:04,341 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:53:04,341 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2022-07-14 14:53:04,365 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 [2022-07-14 14:53:04,366 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:53:04,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:04,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:04,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:04,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:04,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:04,440 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-14 14:53:04,440 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 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) [2022-07-14 14:53:04,463 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. 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 44 states and 73 transitions. Complement of second has 7 states. [2022-07-14 14:53:04,463 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 [2022-07-14 14:53:04,464 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) [2022-07-14 14:53:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-07-14 14:53:04,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 4 letters. [2022-07-14 14:53:04,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:04,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2022-07-14 14:53:04,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:04,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 8 letters. [2022-07-14 14:53:04,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:04,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 73 transitions. [2022-07-14 14:53:04,467 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-14 14:53:04,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 36 states and 59 transitions. [2022-07-14 14:53:04,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-07-14 14:53:04,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2022-07-14 14:53:04,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 59 transitions. [2022-07-14 14:53:04,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:04,469 INFO L369 hiAutomatonCegarLoop]: Abstraction has 36 states and 59 transitions. [2022-07-14 14:53:04,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 59 transitions. [2022-07-14 14:53:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-07-14 14:53:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 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) [2022-07-14 14:53:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2022-07-14 14:53:04,472 INFO L392 hiAutomatonCegarLoop]: Abstraction has 28 states and 46 transitions. [2022-07-14 14:53:04,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:53:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:53:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:53:04,475 INFO L87 Difference]: Start difference. First operand 28 states and 46 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-14 14:53:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:53:04,485 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2022-07-14 14:53:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:53:04,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 56 transitions. [2022-07-14 14:53:04,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-14 14:53:04,488 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 32 states and 49 transitions. [2022-07-14 14:53:04,488 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-07-14 14:53:04,488 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-07-14 14:53:04,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2022-07-14 14:53:04,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:04,489 INFO L369 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2022-07-14 14:53:04,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2022-07-14 14:53:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-07-14 14:53:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2022-07-14 14:53:04,492 INFO L392 hiAutomatonCegarLoop]: Abstraction has 26 states and 40 transitions. [2022-07-14 14:53:04,492 INFO L374 stractBuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2022-07-14 14:53:04,492 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 14:53:04,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2022-07-14 14:53:04,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-14 14:53:04,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:04,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:04,493 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 14:53:04,493 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:04,494 INFO L752 eck$LassoCheckResult]: Stem: 274#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 275#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 278#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 279#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 266#L12-2 assume !(main_~i~0#1 <= 0); 267#L15-1 [2022-07-14 14:53:04,494 INFO L754 eck$LassoCheckResult]: Loop: 267#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 276#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 285#L12 assume !(main_~i~0#1 >= 10); 283#L12-2 assume !(main_~i~0#1 <= 0); 267#L15-1 [2022-07-14 14:53:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:04,494 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2022-07-14 14:53:04,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:04,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193635424] [2022-07-14 14:53:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:04,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:04,500 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:04,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2022-07-14 14:53:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:04,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180587522] [2022-07-14 14:53:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:04,518 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:04,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:04,523 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2022-07-14 14:53:04,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:04,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450904369] [2022-07-14 14:53:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:04,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:04,536 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:04,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:04,573 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:04,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:04,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:04,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:04,574 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:53:04,574 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,574 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:04,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:04,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2022-07-14 14:53:04,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:04,574 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:04,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,623 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:04,623 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:53:04,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,625 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) [2022-07-14 14:53:04,625 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 [2022-07-14 14:53:04,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:04,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:04,683 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:04,683 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: [] [2022-07-14 14:53:04,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-07-14 14:53:04,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,708 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) [2022-07-14 14:53:04,709 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 [2022-07-14 14:53:04,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:04,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:04,726 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:04,726 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:53:04,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2022-07-14 14:53:04,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,742 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) [2022-07-14 14:53:04,743 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 [2022-07-14 14:53:04,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:04,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:04,803 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 [2022-07-14 14:53:04,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,804 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) [2022-07-14 14:53:04,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:53:04,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:04,831 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 [2022-07-14 14:53:04,898 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:53:04,901 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 [2022-07-14 14:53:04,901 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:04,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:04,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:04,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:04,901 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:53:04,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:04,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:04,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2022-07-14 14:53:04,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:04,902 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:04,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:04,964 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:04,964 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:53:04,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:04,968 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) [2022-07-14 14:53:04,978 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 [2022-07-14 14:53:04,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:04,985 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:04,985 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:04,985 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:04,985 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:04,986 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:04,986 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:04,988 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 [2022-07-14 14:53:05,003 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:05,027 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 [2022-07-14 14:53:05,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,029 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) [2022-07-14 14:53:05,034 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 [2022-07-14 14:53:05,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:05,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:05,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:05,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:05,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:05,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:05,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:05,044 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 [2022-07-14 14:53:05,058 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:53:05,059 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-14 14:53:05,059 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:53:05,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,061 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) [2022-07-14 14:53:05,061 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 [2022-07-14 14:53:05,062 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:53:05,062 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:53:05,062 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:53:05,062 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-14 14:53:05,077 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 [2022-07-14 14:53:05,078 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:53:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:05,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:05,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,119 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:53:05,120 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-14 14:53:05,146 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 58 states and 90 transitions. Complement of second has 7 states. [2022-07-14 14:53:05,147 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 [2022-07-14 14:53:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-14 14:53:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-07-14 14:53:05,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-14 14:53:05,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:05,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-14 14:53:05,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:05,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2022-07-14 14:53:05,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:05,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 90 transitions. [2022-07-14 14:53:05,155 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-07-14 14:53:05,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 55 states and 85 transitions. [2022-07-14 14:53:05,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-07-14 14:53:05,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2022-07-14 14:53:05,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 85 transitions. [2022-07-14 14:53:05,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:05,156 INFO L369 hiAutomatonCegarLoop]: Abstraction has 55 states and 85 transitions. [2022-07-14 14:53:05,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 85 transitions. [2022-07-14 14:53:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2022-07-14 14:53:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 48 states have internal predecessors, (79), 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) [2022-07-14 14:53:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2022-07-14 14:53:05,161 INFO L392 hiAutomatonCegarLoop]: Abstraction has 49 states and 79 transitions. [2022-07-14 14:53:05,161 INFO L374 stractBuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2022-07-14 14:53:05,162 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 14:53:05,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 79 transitions. [2022-07-14 14:53:05,162 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-07-14 14:53:05,162 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:05,163 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:05,163 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-07-14 14:53:05,163 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:05,163 INFO L752 eck$LassoCheckResult]: Stem: 409#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 410#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 415#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 426#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 420#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 421#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 427#L18-1 [2022-07-14 14:53:05,163 INFO L754 eck$LassoCheckResult]: Loop: 427#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 422#L12 assume !(main_~i~0#1 >= 10); 423#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 433#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 427#L18-1 [2022-07-14 14:53:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2022-07-14 14:53:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:05,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213809414] [2022-07-14 14:53:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:05,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:05,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213809414] [2022-07-14 14:53:05,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213809414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:53:05,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:53:05,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:53:05,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460894933] [2022-07-14 14:53:05,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:53:05,176 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:53:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2022-07-14 14:53:05,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:05,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005338359] [2022-07-14 14:53:05,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:05,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:05,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005338359] [2022-07-14 14:53:05,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005338359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:53:05,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:53:05,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:53:05,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312865316] [2022-07-14 14:53:05,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:53:05,189 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 14:53:05,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:53:05,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:53:05,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:53:05,190 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. cyclomatic complexity: 36 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:05,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:53:05,197 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2022-07-14 14:53:05,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:53:05,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2022-07-14 14:53:05,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-14 14:53:05,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 60 transitions. [2022-07-14 14:53:05,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-07-14 14:53:05,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-07-14 14:53:05,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2022-07-14 14:53:05,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:05,200 INFO L369 hiAutomatonCegarLoop]: Abstraction has 41 states and 60 transitions. [2022-07-14 14:53:05,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2022-07-14 14:53:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2022-07-14 14:53:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 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) [2022-07-14 14:53:05,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2022-07-14 14:53:05,203 INFO L392 hiAutomatonCegarLoop]: Abstraction has 40 states and 59 transitions. [2022-07-14 14:53:05,203 INFO L374 stractBuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2022-07-14 14:53:05,203 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-14 14:53:05,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2022-07-14 14:53:05,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-14 14:53:05,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:05,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:05,204 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:53:05,204 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:05,204 INFO L752 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 509#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 517#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 524#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 522#L12-2 assume !(main_~i~0#1 <= 0); 514#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 515#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 534#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 504#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 505#L15-1 [2022-07-14 14:53:05,204 INFO L754 eck$LassoCheckResult]: Loop: 505#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 520#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 533#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 531#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 505#L15-1 [2022-07-14 14:53:05,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash 588716517, now seen corresponding path program 1 times [2022-07-14 14:53:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:05,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791903267] [2022-07-14 14:53:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:05,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791903267] [2022-07-14 14:53:05,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791903267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:53:05,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:53:05,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 14:53:05,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586697660] [2022-07-14 14:53:05,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:53:05,240 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:53:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1709112, now seen corresponding path program 1 times [2022-07-14 14:53:05,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:05,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477374320] [2022-07-14 14:53:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:05,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:05,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477374320] [2022-07-14 14:53:05,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477374320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:53:05,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:53:05,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 14:53:05,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460345884] [2022-07-14 14:53:05,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:53:05,250 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 14:53:05,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:53:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 14:53:05,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 14:53:05,251 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 24 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:53:05,259 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2022-07-14 14:53:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 14:53:05,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2022-07-14 14:53:05,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-14 14:53:05,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 45 states and 60 transitions. [2022-07-14 14:53:05,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-07-14 14:53:05,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-07-14 14:53:05,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 60 transitions. [2022-07-14 14:53:05,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:05,261 INFO L369 hiAutomatonCegarLoop]: Abstraction has 45 states and 60 transitions. [2022-07-14 14:53:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 60 transitions. [2022-07-14 14:53:05,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2022-07-14 14:53:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 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) [2022-07-14 14:53:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2022-07-14 14:53:05,264 INFO L392 hiAutomatonCegarLoop]: Abstraction has 39 states and 54 transitions. [2022-07-14 14:53:05,264 INFO L374 stractBuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2022-07-14 14:53:05,264 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-14 14:53:05,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2022-07-14 14:53:05,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-07-14 14:53:05,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:05,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:05,265 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 14:53:05,265 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:05,265 INFO L752 eck$LassoCheckResult]: Stem: 609#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 610#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 604#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 605#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 600#L12-2 assume !(main_~i~0#1 <= 0); 601#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 611#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 624#L12 assume !(main_~i~0#1 >= 10); 619#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 615#L15-1 [2022-07-14 14:53:05,265 INFO L754 eck$LassoCheckResult]: Loop: 615#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 616#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 621#L12 assume !(main_~i~0#1 >= 10); 620#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 615#L15-1 [2022-07-14 14:53:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash 588716579, now seen corresponding path program 1 times [2022-07-14 14:53:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:05,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549988741] [2022-07-14 14:53:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:05,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,286 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 [2022-07-14 14:53:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549988741] [2022-07-14 14:53:05,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549988741] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:53:05,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816061221] [2022-07-14 14:53:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:05,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:53:05,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,304 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) [2022-07-14 14:53:05,313 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 [2022-07-14 14:53:05,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-14 14:53:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 14:53:05,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:53:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816061221] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:53:05,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:53:05,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-07-14 14:53:05,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571175422] [2022-07-14 14:53:05,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:53:05,375 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:53:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174, now seen corresponding path program 2 times [2022-07-14 14:53:05,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:05,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181406292] [2022-07-14 14:53:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:05,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:05,385 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:05,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:05,435 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:05,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:05,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:05,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:05,436 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:53:05,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:05,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:05,436 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2022-07-14 14:53:05,436 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:05,436 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:05,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,495 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:05,496 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:53:05,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,500 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) [2022-07-14 14:53:05,501 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 [2022-07-14 14:53:05,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:05,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:05,560 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:05,560 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:53:05,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-07-14 14:53:05,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,582 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) [2022-07-14 14:53:05,582 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 [2022-07-14 14:53:05,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:05,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:05,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:05,591 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:53:05,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-14 14:53:05,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,607 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) [2022-07-14 14:53:05,608 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 [2022-07-14 14:53:05,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:05,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:05,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:05,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,637 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) [2022-07-14 14:53:05,645 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 [2022-07-14 14:53:05,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:53:05,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:05,697 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:53:05,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-07-14 14:53:05,700 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:05,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:05,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:05,701 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:05,701 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:53:05,701 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,701 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:05,701 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:05,701 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2022-07-14 14:53:05,701 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:05,701 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:05,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:05,772 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:05,772 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:53:05,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,775 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) [2022-07-14 14:53:05,776 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 [2022-07-14 14:53:05,778 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 [2022-07-14 14:53:05,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:05,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:05,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:05,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:05,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:05,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:05,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:05,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:05,827 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 [2022-07-14 14:53:05,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,829 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) [2022-07-14 14:53:05,831 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 [2022-07-14 14:53:05,843 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 [2022-07-14 14:53:05,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:05,850 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:05,850 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:05,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:05,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:05,851 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:05,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:05,865 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:53:05,867 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:53:05,867 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:53:05,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:05,870 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) [2022-07-14 14:53:05,872 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 [2022-07-14 14:53:05,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:53:05,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:53:05,873 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:53:05,873 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-14 14:53:05,897 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 [2022-07-14 14:53:05,898 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:53:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:05,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:05,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:05,955 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:53:05,956 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:05,990 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 136 transitions. Complement of second has 7 states. [2022-07-14 14:53:05,990 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 [2022-07-14 14:53:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-07-14 14:53:05,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-14 14:53:05,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:05,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 13 letters. Loop has 4 letters. [2022-07-14 14:53:05,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:05,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 8 letters. [2022-07-14 14:53:05,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:05,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 136 transitions. [2022-07-14 14:53:05,994 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2022-07-14 14:53:05,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 91 states and 122 transitions. [2022-07-14 14:53:05,995 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-07-14 14:53:05,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2022-07-14 14:53:05,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 122 transitions. [2022-07-14 14:53:05,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:05,995 INFO L369 hiAutomatonCegarLoop]: Abstraction has 91 states and 122 transitions. [2022-07-14 14:53:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 122 transitions. [2022-07-14 14:53:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2022-07-14 14:53:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 77 states have internal predecessors, (109), 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) [2022-07-14 14:53:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2022-07-14 14:53:06,000 INFO L392 hiAutomatonCegarLoop]: Abstraction has 78 states and 109 transitions. [2022-07-14 14:53:06,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:53:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 14:53:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-14 14:53:06,001 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:06,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:53:06,040 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2022-07-14 14:53:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 14:53:06,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 174 transitions. [2022-07-14 14:53:06,042 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2022-07-14 14:53:06,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 108 states and 137 transitions. [2022-07-14 14:53:06,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2022-07-14 14:53:06,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2022-07-14 14:53:06,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 137 transitions. [2022-07-14 14:53:06,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:06,044 INFO L369 hiAutomatonCegarLoop]: Abstraction has 108 states and 137 transitions. [2022-07-14 14:53:06,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 137 transitions. [2022-07-14 14:53:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2022-07-14 14:53:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 85 states have internal predecessors, (111), 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) [2022-07-14 14:53:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2022-07-14 14:53:06,048 INFO L392 hiAutomatonCegarLoop]: Abstraction has 86 states and 111 transitions. [2022-07-14 14:53:06,048 INFO L374 stractBuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2022-07-14 14:53:06,048 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-14 14:53:06,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 111 transitions. [2022-07-14 14:53:06,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2022-07-14 14:53:06,049 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:06,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:06,049 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 14:53:06,049 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:06,049 INFO L752 eck$LassoCheckResult]: Stem: 1079#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1080#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1083#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1093#L12 assume !(main_~i~0#1 >= 10); 1102#L12-2 assume !(main_~i~0#1 <= 0); 1101#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1099#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1096#L12 assume !(main_~i~0#1 >= 10); 1095#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1094#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1074#L18-1 [2022-07-14 14:53:06,049 INFO L754 eck$LassoCheckResult]: Loop: 1074#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1075#L12 assume !(main_~i~0#1 >= 10); 1123#L12-2 assume !(main_~i~0#1 <= 0); 1085#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1074#L18-1 [2022-07-14 14:53:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:06,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1449615143, now seen corresponding path program 1 times [2022-07-14 14:53:06,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:06,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904162997] [2022-07-14 14:53:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:06,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,055 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 2 times [2022-07-14 14:53:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:06,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470103594] [2022-07-14 14:53:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:06,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,062 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:06,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:06,064 INFO L85 PathProgramCache]: Analyzing trace with hash -130036926, now seen corresponding path program 2 times [2022-07-14 14:53:06,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:06,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225586137] [2022-07-14 14:53:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:06,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,068 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:06,099 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:06,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:06,100 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:06,100 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:06,100 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:53:06,100 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,100 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:06,100 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:06,100 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2022-07-14 14:53:06,100 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:06,100 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:06,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:06,145 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:53:06,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,146 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) [2022-07-14 14:53:06,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:06,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:06,163 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 [2022-07-14 14:53:06,179 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 [2022-07-14 14:53:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,180 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) [2022-07-14 14:53:06,184 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 [2022-07-14 14:53:06,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:53:06,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:06,204 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:53:06,222 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 [2022-07-14 14:53:06,222 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:06,222 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:06,222 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:06,222 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:06,222 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:53:06,222 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,222 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:06,222 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:06,222 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2022-07-14 14:53:06,222 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:06,223 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:06,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,262 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:06,262 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:53:06,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,264 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) [2022-07-14 14:53:06,272 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 [2022-07-14 14:53:06,275 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 [2022-07-14 14:53:06,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:06,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:06,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:06,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:06,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:06,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:06,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:06,283 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:53:06,284 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:53:06,284 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 14:53:06,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,286 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) [2022-07-14 14:53:06,291 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 [2022-07-14 14:53:06,299 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:53:06,299 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:53:06,299 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:53:06,299 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2022-07-14 14:53:06,309 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 [2022-07-14 14:53:06,318 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 [2022-07-14 14:53:06,319 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:53:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:06,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:06,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:06,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:06,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:06,385 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:53:06,385 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:06,410 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 115 states and 145 transitions. Complement of second has 7 states. [2022-07-14 14:53:06,410 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 [2022-07-14 14:53:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-07-14 14:53:06,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 4 letters. [2022-07-14 14:53:06,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:06,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2022-07-14 14:53:06,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:06,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 8 letters. [2022-07-14 14:53:06,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:06,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 145 transitions. [2022-07-14 14:53:06,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2022-07-14 14:53:06,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 97 states and 125 transitions. [2022-07-14 14:53:06,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2022-07-14 14:53:06,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2022-07-14 14:53:06,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 125 transitions. [2022-07-14 14:53:06,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:06,414 INFO L369 hiAutomatonCegarLoop]: Abstraction has 97 states and 125 transitions. [2022-07-14 14:53:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 125 transitions. [2022-07-14 14:53:06,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2022-07-14 14:53:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.302325581395349) internal successors, (112), 85 states have internal predecessors, (112), 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) [2022-07-14 14:53:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2022-07-14 14:53:06,418 INFO L392 hiAutomatonCegarLoop]: Abstraction has 86 states and 112 transitions. [2022-07-14 14:53:06,418 INFO L374 stractBuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2022-07-14 14:53:06,418 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-14 14:53:06,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 112 transitions. [2022-07-14 14:53:06,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2022-07-14 14:53:06,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:06,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:06,419 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:53:06,419 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:06,419 INFO L752 eck$LassoCheckResult]: Stem: 1346#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1347#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1351#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1345#L12 assume !(main_~i~0#1 >= 10); 1352#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1357#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1410#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1343#L12 assume !(main_~i~0#1 >= 10); 1339#L12-2 assume !(main_~i~0#1 <= 0); 1340#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1350#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1342#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1337#L12-2 [2022-07-14 14:53:06,419 INFO L754 eck$LassoCheckResult]: Loop: 1337#L12-2 assume !(main_~i~0#1 <= 0); 1338#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1356#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1399#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1337#L12-2 [2022-07-14 14:53:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1818617978, now seen corresponding path program 1 times [2022-07-14 14:53:06,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:06,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788404465] [2022-07-14 14:53:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:06,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:06,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:06,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788404465] [2022-07-14 14:53:06,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788404465] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:53:06,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006918341] [2022-07-14 14:53:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:06,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:53:06,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,443 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:53:06,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-14 14:53:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:06,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:06,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:06,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:53:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:06,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006918341] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:53:06,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:53:06,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-14 14:53:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716252827] [2022-07-14 14:53:06,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:53:06,508 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:53:06,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2022-07-14 14:53:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:06,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848507171] [2022-07-14 14:53:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,512 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:06,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:06,539 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:06,539 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:06,539 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:06,539 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:06,539 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:53:06,539 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,539 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:06,539 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:06,540 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2022-07-14 14:53:06,540 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:06,540 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:06,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,585 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:06,586 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:53:06,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,587 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) [2022-07-14 14:53:06,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:06,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:06,608 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 [2022-07-14 14:53:06,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:06,614 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:53:06,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-07-14 14:53:06,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,633 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) [2022-07-14 14:53:06,636 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 [2022-07-14 14:53:06,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:06,637 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:06,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:06,647 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:53:06,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:06,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,663 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) [2022-07-14 14:53:06,664 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 [2022-07-14 14:53:06,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:06,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:06,670 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:06,670 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:53:06,687 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 [2022-07-14 14:53:06,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,689 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) [2022-07-14 14:53:06,690 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 [2022-07-14 14:53:06,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:06,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:06,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-07-14 14:53:06,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,723 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:53:06,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-07-14 14:53:06,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:53:06,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:06,797 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:53:06,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:06,800 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:06,800 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:06,800 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:06,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:06,800 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:53:06,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:06,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:06,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2022-07-14 14:53:06,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:06,800 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:06,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:06,859 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:06,859 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:53:06,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,861 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:53:06,867 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 [2022-07-14 14:53:06,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-07-14 14:53:06,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:06,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:06,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:06,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:06,875 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:53:06,876 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:53:06,878 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:06,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-07-14 14:53:06,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,893 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:53:06,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-07-14 14:53:06,895 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 [2022-07-14 14:53:06,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:06,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:06,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:06,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:06,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:53:06,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:53:06,935 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:06,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:06,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:06,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:06,960 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:53:06,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-07-14 14:53:06,997 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 [2022-07-14 14:53:07,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:07,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:07,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:07,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:07,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:07,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:07,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:07,020 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:07,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:07,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,044 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:53:07,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-07-14 14:53:07,046 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 [2022-07-14 14:53:07,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:07,054 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:07,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:07,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:07,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:07,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:07,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:07,069 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:53:07,072 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:53:07,072 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:53:07,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,076 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 14:53:07,080 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:53:07,080 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:53:07,080 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:53:07,080 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-14 14:53:07,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-07-14 14:53:07,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2022-07-14 14:53:07,125 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:53:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:07,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:07,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:07,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:07,172 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:53:07,172 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:07,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 188 states and 256 transitions. Complement of second has 7 states. [2022-07-14 14:53:07,196 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 [2022-07-14 14:53:07,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:53:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-07-14 14:53:07,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2022-07-14 14:53:07,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:07,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2022-07-14 14:53:07,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:07,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2022-07-14 14:53:07,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:07,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 256 transitions. [2022-07-14 14:53:07,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2022-07-14 14:53:07,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 140 states and 182 transitions. [2022-07-14 14:53:07,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2022-07-14 14:53:07,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2022-07-14 14:53:07,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 182 transitions. [2022-07-14 14:53:07,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:07,201 INFO L369 hiAutomatonCegarLoop]: Abstraction has 140 states and 182 transitions. [2022-07-14 14:53:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 182 transitions. [2022-07-14 14:53:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2022-07-14 14:53:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 93 states have internal predecessors, (124), 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) [2022-07-14 14:53:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2022-07-14 14:53:07,205 INFO L392 hiAutomatonCegarLoop]: Abstraction has 94 states and 124 transitions. [2022-07-14 14:53:07,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:53:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 14:53:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-07-14 14:53:07,206 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-07-14 14:53:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:53:07,252 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2022-07-14 14:53:07,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 14:53:07,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 178 transitions. [2022-07-14 14:53:07,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2022-07-14 14:53:07,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 150 states and 168 transitions. [2022-07-14 14:53:07,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2022-07-14 14:53:07,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2022-07-14 14:53:07,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 168 transitions. [2022-07-14 14:53:07,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:07,256 INFO L369 hiAutomatonCegarLoop]: Abstraction has 150 states and 168 transitions. [2022-07-14 14:53:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 168 transitions. [2022-07-14 14:53:07,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2022-07-14 14:53:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.1205673758865249) internal successors, (158), 140 states have internal predecessors, (158), 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) [2022-07-14 14:53:07,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 158 transitions. [2022-07-14 14:53:07,266 INFO L392 hiAutomatonCegarLoop]: Abstraction has 141 states and 158 transitions. [2022-07-14 14:53:07,266 INFO L374 stractBuchiCegarLoop]: Abstraction has 141 states and 158 transitions. [2022-07-14 14:53:07,266 INFO L287 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-07-14 14:53:07,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 158 transitions. [2022-07-14 14:53:07,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2022-07-14 14:53:07,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:07,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:07,268 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [11, 9, 9, 6, 4, 2, 1, 1, 1] [2022-07-14 14:53:07,269 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 14:53:07,270 INFO L752 eck$LassoCheckResult]: Stem: 2011#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2012#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2019#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2030#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 2031#L12-2 assume !(main_~i~0#1 <= 0); 2052#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2051#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2049#L12 assume !(main_~i~0#1 >= 10); 2048#L12-2 assume !(main_~i~0#1 <= 0); 2047#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2046#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2045#L12 assume !(main_~i~0#1 >= 10); 2044#L12-2 assume !(main_~i~0#1 <= 0); 2043#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2042#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2041#L12 assume !(main_~i~0#1 >= 10); 2038#L12-2 assume !(main_~i~0#1 <= 0); 2040#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2039#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2036#L12 assume !(main_~i~0#1 >= 10); 2037#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 2104#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2102#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2101#L12 assume !(main_~i~0#1 >= 10); 2100#L12-2 assume !(main_~i~0#1 <= 0); 2099#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2098#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2097#L12 assume !(main_~i~0#1 >= 10); 2096#L12-2 assume !(main_~i~0#1 <= 0); 2095#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2094#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2093#L12 assume !(main_~i~0#1 >= 10); 2092#L12-2 assume !(main_~i~0#1 <= 0); 2091#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2090#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2089#L12 assume !(main_~i~0#1 >= 10); 2088#L12-2 assume !(main_~i~0#1 <= 0); 2087#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2086#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2064#L12 assume !(main_~i~0#1 >= 10); 2068#L12-2 assume !(main_~i~0#1 <= 0); 2066#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2063#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2058#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 2057#L12-2 [2022-07-14 14:53:07,270 INFO L754 eck$LassoCheckResult]: Loop: 2057#L12-2 assume !(main_~i~0#1 <= 0); 2060#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2059#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2056#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 2057#L12-2 [2022-07-14 14:53:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:07,272 INFO L85 PathProgramCache]: Analyzing trace with hash 178061768, now seen corresponding path program 1 times [2022-07-14 14:53:07,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:07,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901924210] [2022-07-14 14:53:07,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:07,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 14:53:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:07,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901924210] [2022-07-14 14:53:07,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901924210] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:53:07,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376802670] [2022-07-14 14:53:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:07,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:53:07,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,333 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:53:07,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-07-14 14:53:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:07,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 14:53:07,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:07,416 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 [2022-07-14 14:53:07,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 14:53:07,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:53:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-14 14:53:07,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376802670] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:53:07,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:53:07,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2022-07-14 14:53:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235632236] [2022-07-14 14:53:07,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:53:07,487 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 14:53:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2022-07-14 14:53:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:07,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211671521] [2022-07-14 14:53:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:07,490 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:07,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:07,523 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:07,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:07,524 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:07,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:07,524 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:53:07,524 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:07,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:07,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2022-07-14 14:53:07,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:07,524 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:07,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,573 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:07,573 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:53:07,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,575 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2022-07-14 14:53:07,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-07-14 14:53:07,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:07,577 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:07,587 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:53:07,587 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:53:07,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2022-07-14 14:53:07,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,603 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2022-07-14 14:53:07,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-07-14 14:53:07,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:53:07,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:07,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2022-07-14 14:53:07,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,627 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2022-07-14 14:53:07,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-07-14 14:53:07,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:53:07,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:53:07,700 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:53:07,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:07,703 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:53:07,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:53:07,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:53:07,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:53:07,703 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:53:07,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:53:07,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:53:07,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2022-07-14 14:53:07,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:53:07,703 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:53:07,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:53:07,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:53:07,749 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:53:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,751 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2022-07-14 14:53:07,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-07-14 14:53:07,753 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 [2022-07-14 14:53:07,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:07,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:07,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:07,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:07,761 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:53:07,761 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:53:07,767 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:53:07,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:07,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,783 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2022-07-14 14:53:07,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-07-14 14:53:07,785 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 [2022-07-14 14:53:07,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:53:07,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:53:07,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:53:07,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:53:07,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:53:07,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:53:07,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:53:07,792 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:53:07,794 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:53:07,794 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:53:07,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:53:07,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:07,796 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2022-07-14 14:53:07,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-07-14 14:53:07,798 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:53:07,798 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:53:07,798 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:53:07,798 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-14 14:53:07,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2022-07-14 14:53:07,813 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:53:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:07,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:07,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:07,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:07,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:07,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:07,903 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:53:07,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-07-14 14:53:07,927 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 172 states and 193 transitions. Complement of second has 7 states. [2022-07-14 14:53:07,928 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 [2022-07-14 14:53:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-07-14 14:53:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-07-14 14:53:07,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 44 letters. Loop has 4 letters. [2022-07-14 14:53:07,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:07,930 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:53:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:07,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:07,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:08,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:08,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:08,012 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:53:08,012 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-07-14 14:53:08,038 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 202 states and 225 transitions. Complement of second has 7 states. [2022-07-14 14:53:08,039 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 [2022-07-14 14:53:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-07-14 14:53:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-07-14 14:53:08,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 44 letters. Loop has 4 letters. [2022-07-14 14:53:08,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:08,040 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:53:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:08,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:53:08,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:08,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:53:08,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:53:08,126 INFO L152 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 [2022-07-14 14:53:08,126 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-07-14 14:53:08,147 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 187 states and 211 transitions. Complement of second has 8 states. [2022-07-14 14:53:08,148 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 [2022-07-14 14:53:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-07-14 14:53:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-07-14 14:53:08,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 4 letters. [2022-07-14 14:53:08,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:08,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 48 letters. Loop has 4 letters. [2022-07-14 14:53:08,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:08,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 8 letters. [2022-07-14 14:53:08,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:53:08,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 187 states and 211 transitions. [2022-07-14 14:53:08,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2022-07-14 14:53:08,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 187 states to 144 states and 161 transitions. [2022-07-14 14:53:08,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2022-07-14 14:53:08,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2022-07-14 14:53:08,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 161 transitions. [2022-07-14 14:53:08,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:08,152 INFO L369 hiAutomatonCegarLoop]: Abstraction has 144 states and 161 transitions. [2022-07-14 14:53:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 161 transitions. [2022-07-14 14:53:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2022-07-14 14:53:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 91 states have internal predecessors, (103), 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) [2022-07-14 14:53:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2022-07-14 14:53:08,155 INFO L392 hiAutomatonCegarLoop]: Abstraction has 92 states and 103 transitions. [2022-07-14 14:53:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:53:08,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 14:53:08,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:53:08,155 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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) [2022-07-14 14:53:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:53:08,230 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2022-07-14 14:53:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:53:08,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 208 transitions. [2022-07-14 14:53:08,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 82 [2022-07-14 14:53:08,243 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 178 states and 195 transitions. [2022-07-14 14:53:08,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2022-07-14 14:53:08,249 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2022-07-14 14:53:08,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 195 transitions. [2022-07-14 14:53:08,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:08,249 INFO L369 hiAutomatonCegarLoop]: Abstraction has 178 states and 195 transitions. [2022-07-14 14:53:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 195 transitions. [2022-07-14 14:53:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2022-07-14 14:53:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.1011904761904763) internal successors, (185), 167 states have internal predecessors, (185), 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) [2022-07-14 14:53:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2022-07-14 14:53:08,253 INFO L392 hiAutomatonCegarLoop]: Abstraction has 168 states and 185 transitions. [2022-07-14 14:53:08,253 INFO L374 stractBuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2022-07-14 14:53:08,253 INFO L287 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-07-14 14:53:08,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 185 transitions. [2022-07-14 14:53:08,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2022-07-14 14:53:08,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:08,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:08,255 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2022-07-14 14:53:08,255 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2022-07-14 14:53:08,256 INFO L752 eck$LassoCheckResult]: Stem: 3741#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3742#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3746#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3750#L12 assume !(main_~i~0#1 >= 10); 3756#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3753#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3755#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3862#L12 assume !(main_~i~0#1 >= 10); 3808#L12-2 assume !(main_~i~0#1 <= 0); 3809#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3885#L12 assume !(main_~i~0#1 >= 10); 3860#L12-2 assume !(main_~i~0#1 <= 0); 3861#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3883#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3881#L12 assume !(main_~i~0#1 >= 10); 3879#L12-2 assume !(main_~i~0#1 <= 0); 3854#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3853#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3851#L12 assume !(main_~i~0#1 >= 10); 3852#L12-2 assume !(main_~i~0#1 <= 0); 3848#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3737#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3738#L12 assume !(main_~i~0#1 >= 10); 3866#L12-2 assume !(main_~i~0#1 <= 0); 3865#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3863#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3801#L12 [2022-07-14 14:53:08,256 INFO L754 eck$LassoCheckResult]: Loop: 3801#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 3800#L12-2 assume !(main_~i~0#1 <= 0); 3745#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3739#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3740#L12 assume !(main_~i~0#1 >= 10); 3735#L12-2 assume !(main_~i~0#1 <= 0); 3736#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3845#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3844#L12 assume !(main_~i~0#1 >= 10); 3843#L12-2 assume !(main_~i~0#1 <= 0); 3842#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3841#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3840#L12 assume !(main_~i~0#1 >= 10); 3839#L12-2 assume !(main_~i~0#1 <= 0); 3838#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3837#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3836#L12 assume !(main_~i~0#1 >= 10); 3835#L12-2 assume !(main_~i~0#1 <= 0); 3834#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3833#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3832#L12 assume !(main_~i~0#1 >= 10); 3831#L12-2 assume !(main_~i~0#1 <= 0); 3830#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3829#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3828#L12 assume !(main_~i~0#1 >= 10); 3827#L12-2 assume !(main_~i~0#1 <= 0); 3826#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3825#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3824#L12 assume !(main_~i~0#1 >= 10); 3823#L12-2 assume !(main_~i~0#1 <= 0); 3822#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3821#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3820#L12 assume !(main_~i~0#1 >= 10); 3819#L12-2 assume !(main_~i~0#1 <= 0); 3818#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3817#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3816#L12 assume !(main_~i~0#1 >= 10); 3811#L12-2 assume !(main_~i~0#1 <= 0); 3815#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3813#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3810#L12 assume !(main_~i~0#1 >= 10); 3805#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3806#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3814#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3812#L12 assume !(main_~i~0#1 >= 10); 3807#L12-2 assume !(main_~i~0#1 <= 0); 3803#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3804#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3846#L12 assume !(main_~i~0#1 >= 10); 3847#L12-2 assume !(main_~i~0#1 <= 0); 3859#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3858#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3857#L12 assume !(main_~i~0#1 >= 10); 3855#L12-2 assume !(main_~i~0#1 <= 0); 3856#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3875#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3873#L12 assume !(main_~i~0#1 >= 10); 3849#L12-2 assume !(main_~i~0#1 <= 0); 3850#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3869#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3747#L12 assume !(main_~i~0#1 >= 10); 3748#L12-2 assume !(main_~i~0#1 <= 0); 3900#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3888#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3887#L12 assume !(main_~i~0#1 >= 10); 3733#L12-2 assume !(main_~i~0#1 <= 0); 3734#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3752#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3899#L12 assume !(main_~i~0#1 >= 10); 3898#L12-2 assume !(main_~i~0#1 <= 0); 3897#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3896#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3895#L12 assume !(main_~i~0#1 >= 10); 3894#L12-2 assume !(main_~i~0#1 <= 0); 3893#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3892#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3891#L12 assume !(main_~i~0#1 >= 10); 3890#L12-2 assume !(main_~i~0#1 <= 0); 3889#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3802#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3801#L12 [2022-07-14 14:53:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1514411024, now seen corresponding path program 1 times [2022-07-14 14:53:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:08,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862758101] [2022-07-14 14:53:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:08,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:08,264 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:08,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:08,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 1 times [2022-07-14 14:53:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:08,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423175136] [2022-07-14 14:53:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:08,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:08,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:08,291 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:08,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash -883489176, now seen corresponding path program 2 times [2022-07-14 14:53:08,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:08,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376964534] [2022-07-14 14:53:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:08,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:53:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2022-07-14 14:53:08,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:53:08,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376964534] [2022-07-14 14:53:08,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376964534] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:53:08,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92954411] [2022-07-14 14:53:08,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:53:08,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:53:08,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:53:08,395 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:53:08,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-07-14 14:53:08,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:53:08,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:53:08,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 14:53:08,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:53:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2022-07-14 14:53:08,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:53:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2022-07-14 14:53:08,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92954411] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:53:08,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:53:08,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-07-14 14:53:08,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860942701] [2022-07-14 14:53:08,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:53:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:53:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 14:53:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-14 14:53:08,978 INFO L87 Difference]: Start difference. First operand 168 states and 185 transitions. cyclomatic complexity: 21 Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2022-07-14 14:53:09,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:53:09,053 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2022-07-14 14:53:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 14:53:09,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 229 transitions. [2022-07-14 14:53:09,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2022-07-14 14:53:09,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 208 states and 223 transitions. [2022-07-14 14:53:09,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2022-07-14 14:53:09,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2022-07-14 14:53:09,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 223 transitions. [2022-07-14 14:53:09,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:53:09,057 INFO L369 hiAutomatonCegarLoop]: Abstraction has 208 states and 223 transitions. [2022-07-14 14:53:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 223 transitions. [2022-07-14 14:53:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2022-07-14 14:53:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.089820359281437) internal successors, (182), 166 states have internal predecessors, (182), 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) [2022-07-14 14:53:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2022-07-14 14:53:09,065 INFO L392 hiAutomatonCegarLoop]: Abstraction has 167 states and 182 transitions. [2022-07-14 14:53:09,065 INFO L374 stractBuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2022-07-14 14:53:09,065 INFO L287 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-07-14 14:53:09,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 182 transitions. [2022-07-14 14:53:09,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2022-07-14 14:53:09,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:53:09,066 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:53:09,067 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2022-07-14 14:53:09,067 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2022-07-14 14:53:09,067 INFO L752 eck$LassoCheckResult]: Stem: 4776#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4777#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4779#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4791#L12 assume !(main_~i~0#1 >= 10); 4788#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4784#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4786#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4831#L12 assume !(main_~i~0#1 >= 10); 4828#L12-2 assume !(main_~i~0#1 <= 0); 4827#L15-1 [2022-07-14 14:53:09,067 INFO L754 eck$LassoCheckResult]: Loop: 4827#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4826#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4825#L12 assume !(main_~i~0#1 >= 10); 4824#L12-2 assume !(main_~i~0#1 <= 0); 4823#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4822#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4821#L12 assume !(main_~i~0#1 >= 10); 4820#L12-2 assume !(main_~i~0#1 <= 0); 4819#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4818#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4817#L12 assume !(main_~i~0#1 >= 10); 4816#L12-2 assume !(main_~i~0#1 <= 0); 4815#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4814#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4813#L12 assume !(main_~i~0#1 >= 10); 4812#L12-2 assume !(main_~i~0#1 <= 0); 4811#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4810#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4809#L12 assume !(main_~i~0#1 >= 10); 4808#L12-2 assume !(main_~i~0#1 <= 0); 4807#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4806#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4805#L12 assume !(main_~i~0#1 >= 10); 4804#L12-2 assume !(main_~i~0#1 <= 0); 4803#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4802#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4801#L12 assume !(main_~i~0#1 >= 10); 4800#L12-2 assume !(main_~i~0#1 <= 0); 4799#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4798#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4797#L12 assume !(main_~i~0#1 >= 10); 4796#L12-2 assume !(main_~i~0#1 <= 0); 4795#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4794#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4793#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 4790#L12-2 assume !(main_~i~0#1 <= 0); 4771#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4774#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4775#L12 assume !(main_~i~0#1 >= 10); 4870#L12-2 assume !(main_~i~0#1 <= 0); 4869#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4868#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4867#L12 assume !(main_~i~0#1 >= 10); 4866#L12-2 assume !(main_~i~0#1 <= 0); 4865#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4864#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4863#L12 assume !(main_~i~0#1 >= 10); 4862#L12-2 assume !(main_~i~0#1 <= 0); 4861#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4860#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4859#L12 assume !(main_~i~0#1 >= 10); 4858#L12-2 assume !(main_~i~0#1 <= 0); 4857#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4856#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4855#L12 assume !(main_~i~0#1 >= 10); 4854#L12-2 assume !(main_~i~0#1 <= 0); 4853#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4852#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4851#L12 assume !(main_~i~0#1 >= 10); 4850#L12-2 assume !(main_~i~0#1 <= 0); 4849#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4848#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4847#L12 assume !(main_~i~0#1 >= 10); 4846#L12-2 assume !(main_~i~0#1 <= 0); 4845#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4844#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4843#L12 assume !(main_~i~0#1 >= 10); 4842#L12-2 assume !(main_~i~0#1 <= 0); 4841#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4840#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4839#L12 assume !(main_~i~0#1 >= 10); 4838#L12-2 assume !(main_~i~0#1 <= 0); 4837#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4836#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4835#L12 assume !(main_~i~0#1 >= 10); 4834#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4832#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4833#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4829#L12 assume !(main_~i~0#1 >= 10); 4830#L12-2 assume !(main_~i~0#1 <= 0); 4827#L15-1 [2022-07-14 14:53:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:09,067 INFO L85 PathProgramCache]: Analyzing trace with hash 644068259, now seen corresponding path program 2 times [2022-07-14 14:53:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:09,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758104112] [2022-07-14 14:53:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:09,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:09,071 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:09,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1888138361, now seen corresponding path program 2 times [2022-07-14 14:53:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:09,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715432824] [2022-07-14 14:53:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:09,096 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:09,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:09,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:53:09,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1126640613, now seen corresponding path program 3 times [2022-07-14 14:53:09,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:53:09,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784244046] [2022-07-14 14:53:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:53:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:53:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:09,131 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:53:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:53:09,145 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:53:09,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 02:53:09 BoogieIcfgContainer [2022-07-14 14:53:09,635 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 14:53:09,635 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 14:53:09,635 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 14:53:09,636 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 14:53:09,636 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:53:02" (3/4) ... [2022-07-14 14:53:09,638 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-14 14:53:09,688 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 14:53:09,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 14:53:09,688 INFO L158 Benchmark]: Toolchain (without parser) took 7476.76ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 65.8MB in the beginning and 38.8MB in the end (delta: 27.0MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2022-07-14 14:53:09,689 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory was 53.1MB in the beginning and 53.1MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:53:09,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.84ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 75.6MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 14:53:09,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.01ms. Allocated memory is still 98.6MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:53:09,690 INFO L158 Benchmark]: Boogie Preprocessor took 13.03ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 73.3MB in the end (delta: 810.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:53:09,690 INFO L158 Benchmark]: RCFGBuilder took 181.95ms. Allocated memory is still 98.6MB. Free memory was 73.3MB in the beginning and 65.1MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 14:53:09,690 INFO L158 Benchmark]: BuchiAutomizer took 7016.99ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 65.1MB in the beginning and 42.0MB in the end (delta: 23.2MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. [2022-07-14 14:53:09,691 INFO L158 Benchmark]: Witness Printer took 52.63ms. Allocated memory is still 144.7MB. Free memory was 42.0MB in the beginning and 38.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:53:09,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory was 53.1MB in the beginning and 53.1MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.84ms. Allocated memory is still 98.6MB. Free memory was 65.6MB in the beginning and 75.6MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.01ms. Allocated memory is still 98.6MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.03ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 73.3MB in the end (delta: 810.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 181.95ms. Allocated memory is still 98.6MB. Free memory was 73.3MB in the beginning and 65.1MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 7016.99ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 65.1MB in the beginning and 42.0MB in the end (delta: 23.2MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. * Witness Printer took 52.63ms. Allocated memory is still 144.7MB. Free memory was 42.0MB in the beginning and 38.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (7 trivial, 6 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 167 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.9s and 11 iterations. TraceHistogramMax:20. Analysis of lassos took 5.5s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 14. Automata minimization 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 232 StatesRemovedByMinimization, 14 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 [6, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 474 IncrementalHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 127 mSDtfsCounter, 474 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc1 concLT1 SILN0 SILU0 SILI2 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax165 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf110 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fc50a4b=0, up=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) Loop: [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-14 14:53:09,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-07-14 14:53:09,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-07-14 14:53:10,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-07-14 14:53:10,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-14 14:53:10,567 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)