./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 e19ca921 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-dev-e19ca92 [2021-12-22 19:48:39,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:48:39,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:48:39,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:48:39,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:48:39,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:48:39,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:48:39,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:48:39,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:48:39,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:48:39,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:48:39,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:48:39,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:48:39,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:48:39,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:48:39,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:48:39,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:48:39,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:48:39,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:48:39,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:48:39,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:48:39,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:48:39,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:48:39,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:48:39,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:48:39,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:48:39,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:48:39,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:48:39,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:48:39,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:48:39,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:48:39,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:48:39,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:48:39,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:48:39,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:48:39,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:48:39,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:48:39,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:48:39,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:48:39,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:48:39,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:48:39,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-22 19:48:39,321 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:48:39,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:48:39,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:48:39,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:48:39,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:48:39,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:48:39,322 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:48:39,323 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:48:39,323 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:48:39,323 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:48:39,323 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:48:39,323 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:48:39,323 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:48:39,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:48:39,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:48:39,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:48:39,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:48:39,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:48:39,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:48:39,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:48:39,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:48:39,325 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:48:39,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:48:39,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:48:39,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:48:39,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:48:39,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:48:39,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:48:39,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:48:39,327 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:48:39,327 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2021-12-22 19:48:39,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:48:39,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:48:39,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:48:39,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:48:39,596 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:48:39,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-12-22 19:48:39,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9a2ecc9/1d7f39cc37d94dbc969f91bf3e927e97/FLAGa72c4e35d [2021-12-22 19:48:40,028 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:48:40,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-12-22 19:48:40,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9a2ecc9/1d7f39cc37d94dbc969f91bf3e927e97/FLAGa72c4e35d [2021-12-22 19:48:40,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9a2ecc9/1d7f39cc37d94dbc969f91bf3e927e97 [2021-12-22 19:48:40,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:48:40,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:48:40,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:48:40,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:48:40,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:48:40,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac88dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40, skipping insertion in model container [2021-12-22 19:48:40,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:48:40,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:48:40,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:48:40,177 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:48:40,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:48:40,193 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:48:40,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40 WrapperNode [2021-12-22 19:48:40,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:48:40,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:48:40,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:48:40,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:48:40,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,237 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-22 19:48:40,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:48:40,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:48:40,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:48:40,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:48:40,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:48:40,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:48:40,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:48:40,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:48:40,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (1/1) ... [2021-12-22 19:48:40,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,288 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) [2021-12-22 19:48:40,340 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 [2021-12-22 19:48:40,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:48:40,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:48:40,387 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:48:40,388 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:48:40,461 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:48:40,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:48:40,466 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:48:40,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:48:40 BoogieIcfgContainer [2021-12-22 19:48:40,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:48:40,469 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:48:40,469 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:48:40,471 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:48:40,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:48:40,472 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:48:40" (1/3) ... [2021-12-22 19:48:40,473 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e70ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:48:40, skipping insertion in model container [2021-12-22 19:48:40,474 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:48:40,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:40" (2/3) ... [2021-12-22 19:48:40,474 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e70ad5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:48:40, skipping insertion in model container [2021-12-22 19:48:40,474 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:48:40,474 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:48:40" (3/3) ... [2021-12-22 19:48:40,476 INFO L388 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2021-12-22 19:48:40,512 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:48:40,512 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:48:40,512 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:48:40,512 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:48:40,513 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:48:40,513 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:48:40,513 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:48:40,513 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:48:40,524 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) [2021-12-22 19:48:40,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-22 19:48:40,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:40,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:40,540 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-22 19:48:40,540 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:40,541 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:48:40,541 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) [2021-12-22 19:48:40,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-22 19:48:40,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:40,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:40,543 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-22 19:48:40,543 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:40,547 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#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; 6#L18-1true [2021-12-22 19:48:40,547 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11#L12true assume !(main_~i~0#1 >= 10); 3#L12-2true assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 8#L15-1true assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 6#L18-1true [2021-12-22 19:48:40,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-22 19:48:40,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:40,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150488701] [2021-12-22 19:48:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:40,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,607 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,624 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:40,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2021-12-22 19:48:40,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:40,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208163820] [2021-12-22 19:48:40,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:40,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,643 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2021-12-22 19:48:40,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:40,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609862590] [2021-12-22 19:48:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:40,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,668 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:40,771 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:40,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:40,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:40,772 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:40,772 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:40,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,773 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:40,773 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:40,773 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2021-12-22 19:48:40,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:40,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:40,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,869 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:40,871 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:40,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,874 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) [2021-12-22 19:48:40,875 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 [2021-12-22 19:48:40,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:40,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:40,901 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:40,901 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: [] [2021-12-22 19:48:40,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:40,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,922 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) [2021-12-22 19:48:40,923 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 [2021-12-22 19:48:40,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:40,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:40,948 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:40,948 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: [] [2021-12-22 19:48:40,966 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 [2021-12-22 19:48:40,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,974 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) [2021-12-22 19:48:40,975 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 [2021-12-22 19:48:40,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:40,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,045 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 [2021-12-22 19:48:41,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,059 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) [2021-12-22 19:48:41,060 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 [2021-12-22 19:48:41,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:41,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,087 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:41,111 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 [2021-12-22 19:48:41,111 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:41,111 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:41,111 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:41,111 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:41,111 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:41,111 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,112 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:41,112 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:41,112 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2021-12-22 19:48:41,112 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:41,112 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:41,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,171 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:41,174 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:41,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,176 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) [2021-12-22 19:48:41,183 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 [2021-12-22 19:48:41,184 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 [2021-12-22 19:48:41,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:41,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:41,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:41,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:41,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:41,193 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:41,193 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:41,211 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:41,228 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 [2021-12-22 19:48:41,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,230 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) [2021-12-22 19:48:41,231 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 [2021-12-22 19:48:41,232 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 [2021-12-22 19:48:41,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:41,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:41,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:41,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:41,244 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:41,245 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:41,259 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:41,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-22 19:48:41,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,292 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) [2021-12-22 19:48:41,301 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 [2021-12-22 19:48:41,302 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 [2021-12-22 19:48:41,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:41,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:41,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:41,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:41,312 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:41,312 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:41,330 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:41,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-22 19:48:41,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,348 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) [2021-12-22 19:48:41,352 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 [2021-12-22 19:48:41,353 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 [2021-12-22 19:48:41,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:41,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:41,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:41,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:41,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:41,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:41,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:41,379 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:41,381 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:41,382 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-22 19:48:41,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,386 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) [2021-12-22 19:48:41,387 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 [2021-12-22 19:48:41,419 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:41,420 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:41,420 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:41,420 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 [] [2021-12-22 19:48:41,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-22 19:48:41,441 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,547 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 [2021-12-22 19:48:41,548 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) [2021-12-22 19:48:41,582 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. [2021-12-22 19:48:41,583 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 [2021-12-22 19:48:41,586 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) [2021-12-22 19:48:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-22 19:48:41,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-22 19:48:41,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-22 19:48:41,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-22 19:48:41,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2021-12-22 19:48:41,591 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-22 19:48:41,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2021-12-22 19:48:41,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-22 19:48:41,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-22 19:48:41,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2021-12-22 19:48:41,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:41,595 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-12-22 19:48:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2021-12-22 19:48:41,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-22 19:48:41,610 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) [2021-12-22 19:48:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-12-22 19:48:41,611 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-22 19:48:41,612 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-22 19:48:41,612 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 19:48:41,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2021-12-22 19:48:41,612 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-22 19:48:41,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:41,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:41,613 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:48:41,613 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:41,613 INFO L791 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 [2021-12-22 19:48:41,613 INFO L793 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 [2021-12-22 19:48:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,614 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-22 19:48:41,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218803719] [2021-12-22 19:48:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,617 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,619 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2021-12-22 19:48:41,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751978148] [2021-12-22 19:48:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,623 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,626 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:41,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2021-12-22 19:48:41,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730986786] [2021-12-22 19:48:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:41,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730986786] [2021-12-22 19:48:41,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730986786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:48:41,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:48:41,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:48:41,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042273784] [2021-12-22 19:48:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:48:41,679 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:41,680 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:41,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:41,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:41,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:41,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:41,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:41,680 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-12-22 19:48:41,680 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:41,681 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:41,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,716 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:41,717 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:41,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,756 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) [2021-12-22 19:48:41,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:41,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,783 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 [2021-12-22 19:48:41,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:41,784 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: [] [2021-12-22 19:48:41,801 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 [2021-12-22 19:48:41,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,803 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) [2021-12-22 19:48:41,804 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 [2021-12-22 19:48:41,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:41,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,857 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 [2021-12-22 19:48:41,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,859 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) [2021-12-22 19:48:41,895 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 [2021-12-22 19:48:41,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:41,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,923 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:41,929 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 [2021-12-22 19:48:41,929 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:41,929 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:41,929 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:41,929 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:41,929 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:41,929 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,929 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:41,929 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:41,929 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-12-22 19:48:41,929 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:41,929 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:41,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,969 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:41,970 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:41,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,971 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) [2021-12-22 19:48:41,985 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 [2021-12-22 19:48:41,986 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 [2021-12-22 19:48:41,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:41,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:41,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:41,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:41,994 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:41,994 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:41,997 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:42,028 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 [2021-12-22 19:48:42,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,029 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) [2021-12-22 19:48:42,030 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 [2021-12-22 19:48:42,031 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 [2021-12-22 19:48:42,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:42,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:42,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:42,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:42,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:42,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:42,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:42,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:42,056 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:42,056 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-22 19:48:42,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,057 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) [2021-12-22 19:48:42,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:42,069 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:42,069 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:42,069 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 [] [2021-12-22 19:48:42,085 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 [2021-12-22 19:48:42,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-22 19:48:42,088 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:42,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:42,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:42,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,168 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 [2021-12-22 19:48:42,168 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) [2021-12-22 19:48:42,189 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. [2021-12-22 19:48:42,190 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 [2021-12-22 19:48:42,190 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) [2021-12-22 19:48:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-22 19:48:42,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-22 19:48:42,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:42,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-22 19:48:42,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:42,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-22 19:48:42,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:42,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 73 transitions. [2021-12-22 19:48:42,193 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-22 19:48:42,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 36 states and 59 transitions. [2021-12-22 19:48:42,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-22 19:48:42,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-12-22 19:48:42,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 59 transitions. [2021-12-22 19:48:42,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:42,194 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 59 transitions. [2021-12-22 19:48:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 59 transitions. [2021-12-22 19:48:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-12-22 19:48:42,196 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) [2021-12-22 19:48:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2021-12-22 19:48:42,197 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 46 transitions. [2021-12-22 19:48:42,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:42,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:48:42,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:48:42,200 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) [2021-12-22 19:48:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:42,210 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2021-12-22 19:48:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:48:42,211 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 56 transitions. [2021-12-22 19:48:42,212 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-22 19:48:42,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 32 states and 49 transitions. [2021-12-22 19:48:42,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-22 19:48:42,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-22 19:48:42,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2021-12-22 19:48:42,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:42,213 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2021-12-22 19:48:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2021-12-22 19:48:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-12-22 19:48:42,215 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) [2021-12-22 19:48:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2021-12-22 19:48:42,215 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2021-12-22 19:48:42,215 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2021-12-22 19:48:42,216 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 19:48:42,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2021-12-22 19:48:42,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-22 19:48:42,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:42,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:42,217 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-22 19:48:42,217 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:42,217 INFO L791 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 [2021-12-22 19:48:42,217 INFO L793 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 [2021-12-22 19:48:42,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2021-12-22 19:48:42,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110137066] [2021-12-22 19:48:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,221 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,223 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2021-12-22 19:48:42,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728515882] [2021-12-22 19:48:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,227 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,229 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2021-12-22 19:48:42,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237010757] [2021-12-22 19:48:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,234 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,237 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:42,264 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:42,265 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:42,265 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:42,265 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:42,265 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:42,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,265 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:42,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:42,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2021-12-22 19:48:42,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:42,266 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:42,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,331 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 [2021-12-22 19:48:42,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:42,336 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:42,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,352 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) [2021-12-22 19:48:42,352 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 [2021-12-22 19:48:42,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:42,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:42,379 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:42,380 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: [] [2021-12-22 19:48:42,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:42,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,402 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) [2021-12-22 19:48:42,403 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 [2021-12-22 19:48:42,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:42,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:42,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:42,423 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: [] [2021-12-22 19:48:42,442 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 [2021-12-22 19:48:42,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,445 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) [2021-12-22 19:48:42,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:42,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:42,462 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 [2021-12-22 19:48:42,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-22 19:48:42,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,488 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) [2021-12-22 19:48:42,490 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 [2021-12-22 19:48:42,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:42,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:42,565 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:42,570 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 [2021-12-22 19:48:42,571 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:42,571 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:42,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:42,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:42,571 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:42,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:42,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:42,571 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2021-12-22 19:48:42,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:42,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:42,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,622 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:42,622 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:42,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,623 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) [2021-12-22 19:48:42,624 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 [2021-12-22 19:48:42,625 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 [2021-12-22 19:48:42,631 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:42,631 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:42,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:42,631 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:42,631 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:42,632 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:42,632 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:42,647 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:42,663 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 [2021-12-22 19:48:42,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,665 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) [2021-12-22 19:48:42,665 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 [2021-12-22 19:48:42,666 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 [2021-12-22 19:48:42,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:42,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:42,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:42,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:42,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:42,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:42,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:42,689 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:42,690 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-22 19:48:42,690 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-22 19:48:42,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,692 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) [2021-12-22 19:48:42,693 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 [2021-12-22 19:48:42,694 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:42,694 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:42,694 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:42,694 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 [] [2021-12-22 19:48:42,724 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 [2021-12-22 19:48:42,724 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:42,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:42,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:42,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,763 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 [2021-12-22 19:48:42,763 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) [2021-12-22 19:48:42,780 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. [2021-12-22 19:48:42,781 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 [2021-12-22 19:48:42,781 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) [2021-12-22 19:48:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-22 19:48:42,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-22 19:48:42,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:42,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-22 19:48:42,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:42,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2021-12-22 19:48:42,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:42,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 90 transitions. [2021-12-22 19:48:42,784 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-12-22 19:48:42,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 55 states and 85 transitions. [2021-12-22 19:48:42,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-12-22 19:48:42,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-12-22 19:48:42,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 85 transitions. [2021-12-22 19:48:42,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:42,785 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 85 transitions. [2021-12-22 19:48:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 85 transitions. [2021-12-22 19:48:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2021-12-22 19:48:42,788 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) [2021-12-22 19:48:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2021-12-22 19:48:42,788 INFO L704 BuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2021-12-22 19:48:42,788 INFO L587 BuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2021-12-22 19:48:42,788 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-22 19:48:42,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 79 transitions. [2021-12-22 19:48:42,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-12-22 19:48:42,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:42,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:42,790 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:48:42,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:42,790 INFO L791 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 [2021-12-22 19:48:42,790 INFO L793 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 [2021-12-22 19:48:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2021-12-22 19:48:42,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603345596] [2021-12-22 19:48:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:42,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603345596] [2021-12-22 19:48:42,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603345596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:48:42,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:48:42,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:48:42,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692718904] [2021-12-22 19:48:42,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:48:42,804 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:48:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2021-12-22 19:48:42,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70015844] [2021-12-22 19:48:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:42,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70015844] [2021-12-22 19:48:42,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70015844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:48:42,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:48:42,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:48:42,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080179109] [2021-12-22 19:48:42,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:48:42,816 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-22 19:48:42,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:48:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:48:42,817 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) [2021-12-22 19:48:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:42,824 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2021-12-22 19:48:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:48:42,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2021-12-22 19:48:42,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-22 19:48:42,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 60 transitions. [2021-12-22 19:48:42,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-22 19:48:42,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-22 19:48:42,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2021-12-22 19:48:42,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:42,826 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2021-12-22 19:48:42,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2021-12-22 19:48:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-12-22 19:48:42,828 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) [2021-12-22 19:48:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2021-12-22 19:48:42,828 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2021-12-22 19:48:42,828 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2021-12-22 19:48:42,829 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-22 19:48:42,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2021-12-22 19:48:42,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-22 19:48:42,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:42,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:42,830 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-22 19:48:42,830 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:42,830 INFO L791 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 [2021-12-22 19:48:42,830 INFO L793 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 [2021-12-22 19:48:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash 588716517, now seen corresponding path program 1 times [2021-12-22 19:48:42,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434595149] [2021-12-22 19:48:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:42,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434595149] [2021-12-22 19:48:42,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434595149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:48:42,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:48:42,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 19:48:42,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944842891] [2021-12-22 19:48:42,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:48:42,848 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:48:42,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1709112, now seen corresponding path program 1 times [2021-12-22 19:48:42,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392022803] [2021-12-22 19:48:42,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392022803] [2021-12-22 19:48:42,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392022803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:48:42,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:48:42,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:48:42,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064930663] [2021-12-22 19:48:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:48:42,859 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-22 19:48:42,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:42,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:48:42,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:48:42,859 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) [2021-12-22 19:48:42,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:42,867 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-12-22 19:48:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:48:42,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-12-22 19:48:42,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-22 19:48:42,868 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 45 states and 60 transitions. [2021-12-22 19:48:42,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-12-22 19:48:42,869 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-22 19:48:42,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 60 transitions. [2021-12-22 19:48:42,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:42,869 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-12-22 19:48:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 60 transitions. [2021-12-22 19:48:42,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-12-22 19:48:42,871 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) [2021-12-22 19:48:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-12-22 19:48:42,871 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-22 19:48:42,871 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-22 19:48:42,871 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-22 19:48:42,871 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2021-12-22 19:48:42,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-22 19:48:42,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:42,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:42,872 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:48:42,872 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:42,872 INFO L791 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 [2021-12-22 19:48:42,873 INFO L793 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 [2021-12-22 19:48:42,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash 588716579, now seen corresponding path program 1 times [2021-12-22 19:48:42,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754633310] [2021-12-22 19:48:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:42,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754633310] [2021-12-22 19:48:42,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754633310] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:48:42,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538312186] [2021-12-22 19:48:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:48:42,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:42,891 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) [2021-12-22 19:48:42,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-22 19:48:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:42,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:48:42,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:48:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:42,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538312186] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:48:42,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:48:42,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-22 19:48:42,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540428126] [2021-12-22 19:48:42,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:48:42,942 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:48:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:42,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174, now seen corresponding path program 2 times [2021-12-22 19:48:42,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372968201] [2021-12-22 19:48:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:42,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,945 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:42,947 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:42,975 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:42,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:42,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:42,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:42,975 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:42,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:42,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:42,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:42,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-12-22 19:48:42,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:42,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:42,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:42,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,016 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:43,017 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:43,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,032 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) [2021-12-22 19:48:43,033 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 [2021-12-22 19:48:43,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:43,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:43,046 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:43,046 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: [] [2021-12-22 19:48:43,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:43,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,071 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) [2021-12-22 19:48:43,073 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 [2021-12-22 19:48:43,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:43,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:43,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:43,081 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: [] [2021-12-22 19:48:43,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:43,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,100 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) [2021-12-22 19:48:43,101 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 [2021-12-22 19:48:43,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:43,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:43,138 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 [2021-12-22 19:48:43,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,140 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) [2021-12-22 19:48:43,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:43,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:43,143 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 [2021-12-22 19:48:43,194 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:43,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:43,197 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:43,197 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:43,197 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:43,198 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:43,198 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:43,198 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,198 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:43,198 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:43,198 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-12-22 19:48:43,198 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:43,198 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:43,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,240 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:43,240 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:43,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,241 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) [2021-12-22 19:48:43,242 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 [2021-12-22 19:48:43,244 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 [2021-12-22 19:48:43,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:43,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:43,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:43,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:43,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:43,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:43,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:43,265 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:43,281 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 [2021-12-22 19:48:43,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,282 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) [2021-12-22 19:48:43,283 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 [2021-12-22 19:48:43,284 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 [2021-12-22 19:48:43,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:43,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:43,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:43,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:43,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:43,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:43,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:43,306 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:43,308 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:43,308 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-22 19:48:43,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,309 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) [2021-12-22 19:48:43,310 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 [2021-12-22 19:48:43,311 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:43,311 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:43,311 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:43,311 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 [] [2021-12-22 19:48:43,329 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 [2021-12-22 19:48:43,329 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:43,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:43,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:43,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:43,370 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 [2021-12-22 19:48:43,370 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) [2021-12-22 19:48:43,394 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. [2021-12-22 19:48:43,395 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 [2021-12-22 19:48:43,395 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) [2021-12-22 19:48:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-22 19:48:43,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-22 19:48:43,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:43,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-22 19:48:43,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:43,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-22 19:48:43,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:43,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 136 transitions. [2021-12-22 19:48:43,397 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-12-22 19:48:43,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 91 states and 122 transitions. [2021-12-22 19:48:43,398 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-22 19:48:43,398 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-12-22 19:48:43,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 122 transitions. [2021-12-22 19:48:43,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:43,399 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 122 transitions. [2021-12-22 19:48:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 122 transitions. [2021-12-22 19:48:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2021-12-22 19:48:43,402 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) [2021-12-22 19:48:43,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2021-12-22 19:48:43,402 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 109 transitions. [2021-12-22 19:48:43,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:43,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:48:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:48:43,403 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) [2021-12-22 19:48:43,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:43,455 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2021-12-22 19:48:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:48:43,455 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 [2021-12-22 19:48:43,472 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 [2021-12-22 19:48:43,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 174 transitions. [2021-12-22 19:48:43,477 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-12-22 19:48:43,484 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 108 states and 137 transitions. [2021-12-22 19:48:43,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-12-22 19:48:43,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2021-12-22 19:48:43,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 137 transitions. [2021-12-22 19:48:43,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:43,484 INFO L681 BuchiCegarLoop]: Abstraction has 108 states and 137 transitions. [2021-12-22 19:48:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 137 transitions. [2021-12-22 19:48:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2021-12-22 19:48:43,487 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) [2021-12-22 19:48:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2021-12-22 19:48:43,487 INFO L704 BuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-22 19:48:43,487 INFO L587 BuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-22 19:48:43,487 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-22 19:48:43,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 111 transitions. [2021-12-22 19:48:43,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-22 19:48:43,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:43,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:43,488 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-22 19:48:43,488 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:43,488 INFO L791 eck$LassoCheckResult]: Stem: 1079#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1080#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1083#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1093#L12 assume !(main_~i~0#1 >= 10); 1102#L12-2 assume !(main_~i~0#1 <= 0); 1101#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1099#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1096#L12 assume !(main_~i~0#1 >= 10); 1095#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1094#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1074#L18-1 [2021-12-22 19:48:43,488 INFO L793 eck$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 [2021-12-22 19:48:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1449615143, now seen corresponding path program 1 times [2021-12-22 19:48:43,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:43,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193860873] [2021-12-22 19:48:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:43,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,493 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,496 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:43,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 2 times [2021-12-22 19:48:43,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:43,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508160264] [2021-12-22 19:48:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:43,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,498 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,520 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:43,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -130036926, now seen corresponding path program 2 times [2021-12-22 19:48:43,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:43,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553456351] [2021-12-22 19:48:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:43,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,542 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,546 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:43,587 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:43,587 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:43,587 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:43,587 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:43,587 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:43,588 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,588 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:43,588 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:43,588 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-12-22 19:48:43,588 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:43,588 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:43,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,635 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:43,636 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:43,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,637 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) [2021-12-22 19:48:43,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:43,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:43,653 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 [2021-12-22 19:48:43,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:43,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,677 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) [2021-12-22 19:48:43,679 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 [2021-12-22 19:48:43,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:43,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:43,692 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:43,708 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 [2021-12-22 19:48:43,709 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:43,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:43,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:43,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:43,709 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:43,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:43,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:43,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-12-22 19:48:43,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:43,709 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:43,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:43,746 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:43,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,748 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) [2021-12-22 19:48:43,749 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 [2021-12-22 19:48:43,750 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 [2021-12-22 19:48:43,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:43,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:43,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:43,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:43,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:43,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:43,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:43,758 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:43,759 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:43,759 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-22 19:48:43,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,761 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) [2021-12-22 19:48:43,762 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 [2021-12-22 19:48:43,763 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:43,763 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:43,763 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:43,763 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 [] [2021-12-22 19:48:43,778 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 [2021-12-22 19:48:43,779 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:43,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:43,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:43,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:43,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:43,824 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 [2021-12-22 19:48:43,824 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) [2021-12-22 19:48:43,837 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. [2021-12-22 19:48:43,838 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 [2021-12-22 19:48:43,838 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) [2021-12-22 19:48:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-22 19:48:43,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-22 19:48:43,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:43,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-22 19:48:43,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:43,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 8 letters. [2021-12-22 19:48:43,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:43,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 145 transitions. [2021-12-22 19:48:43,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-22 19:48:43,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 97 states and 125 transitions. [2021-12-22 19:48:43,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-12-22 19:48:43,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-12-22 19:48:43,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 125 transitions. [2021-12-22 19:48:43,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:43,841 INFO L681 BuchiCegarLoop]: Abstraction has 97 states and 125 transitions. [2021-12-22 19:48:43,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 125 transitions. [2021-12-22 19:48:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2021-12-22 19:48:43,843 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) [2021-12-22 19:48:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2021-12-22 19:48:43,844 INFO L704 BuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2021-12-22 19:48:43,844 INFO L587 BuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2021-12-22 19:48:43,844 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-22 19:48:43,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 112 transitions. [2021-12-22 19:48:43,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-22 19:48:43,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:43,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:43,845 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1] [2021-12-22 19:48:43,845 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:43,845 INFO L791 eck$LassoCheckResult]: Stem: 1346#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1347#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1351#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1345#L12 assume !(main_~i~0#1 >= 10); 1352#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1357#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1410#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1343#L12 assume !(main_~i~0#1 >= 10); 1339#L12-2 assume !(main_~i~0#1 <= 0); 1340#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1350#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1342#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1337#L12-2 [2021-12-22 19:48:43,846 INFO L793 eck$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 [2021-12-22 19:48:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:43,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1818617978, now seen corresponding path program 1 times [2021-12-22 19:48:43,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:43,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818415458] [2021-12-22 19:48:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:43,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:43,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:43,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818415458] [2021-12-22 19:48:43,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818415458] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:48:43,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683696190] [2021-12-22 19:48:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:43,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:48:43,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:43,869 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) [2021-12-22 19:48:43,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-22 19:48:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:43,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:43,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:43,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:48:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:43,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683696190] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:48:43,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:48:43,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-22 19:48:43,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260041469] [2021-12-22 19:48:43,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:48:43,933 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:48:43,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:43,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2021-12-22 19:48:43,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:43,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014475656] [2021-12-22 19:48:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:43,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,937 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:43,938 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:43,965 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:43,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:43,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:43,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:43,965 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:43,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:43,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:43,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:43,966 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-12-22 19:48:43,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:43,966 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:43,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:43,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,011 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:44,011 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:44,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,012 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) [2021-12-22 19:48:44,013 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 [2021-12-22 19:48:44,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:44,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:44,025 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:44,025 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: [] [2021-12-22 19:48:44,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:44,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,041 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) [2021-12-22 19:48:44,042 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 [2021-12-22 19:48:44,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:44,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:44,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:44,053 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: [] [2021-12-22 19:48:44,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-22 19:48:44,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,077 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) [2021-12-22 19:48:44,111 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 [2021-12-22 19:48:44,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:44,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:44,126 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:44,126 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: [] [2021-12-22 19:48:44,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-22 19:48:44,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,142 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) [2021-12-22 19:48:44,145 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 [2021-12-22 19:48:44,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:44,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:44,167 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 [2021-12-22 19:48:44,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,168 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) [2021-12-22 19:48:44,169 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 [2021-12-22 19:48:44,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:44,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:44,252 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:44,257 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 [2021-12-22 19:48:44,258 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:44,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:44,258 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:44,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:44,258 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:44,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,258 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:44,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:44,258 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-12-22 19:48:44,258 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:44,258 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:44,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:44,297 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:44,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,298 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) [2021-12-22 19:48:44,299 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 [2021-12-22 19:48:44,300 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 [2021-12-22 19:48:44,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:44,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:44,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:44,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:44,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:44,308 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:44,323 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:44,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:44,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,340 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) [2021-12-22 19:48:44,341 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 [2021-12-22 19:48:44,343 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 [2021-12-22 19:48:44,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:44,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:44,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:44,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:44,350 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:44,350 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:44,365 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:44,388 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 [2021-12-22 19:48:44,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,390 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) [2021-12-22 19:48:44,406 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 [2021-12-22 19:48:44,407 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 [2021-12-22 19:48:44,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:44,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:44,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:44,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:44,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:44,413 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:44,413 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:44,420 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:44,436 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 [2021-12-22 19:48:44,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,438 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) [2021-12-22 19:48:44,440 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 [2021-12-22 19:48:44,442 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 [2021-12-22 19:48:44,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:44,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:44,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:44,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:44,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:44,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:44,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:44,458 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:44,459 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:44,459 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-22 19:48:44,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,461 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) [2021-12-22 19:48:44,463 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 [2021-12-22 19:48:44,464 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:44,464 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:44,464 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:44,464 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 [] [2021-12-22 19:48:44,479 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 [2021-12-22 19:48:44,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:44,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:44,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:44,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:44,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:44,525 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 [2021-12-22 19:48:44,525 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) [2021-12-22 19:48:44,552 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. [2021-12-22 19:48:44,552 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 [2021-12-22 19:48:44,553 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) [2021-12-22 19:48:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-22 19:48:44,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-22 19:48:44,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:44,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-22 19:48:44,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:44,554 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-22 19:48:44,554 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:44,554 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 256 transitions. [2021-12-22 19:48:44,555 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-22 19:48:44,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 140 states and 182 transitions. [2021-12-22 19:48:44,556 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-12-22 19:48:44,556 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-12-22 19:48:44,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 182 transitions. [2021-12-22 19:48:44,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:44,557 INFO L681 BuchiCegarLoop]: Abstraction has 140 states and 182 transitions. [2021-12-22 19:48:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 182 transitions. [2021-12-22 19:48:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2021-12-22 19:48:44,560 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) [2021-12-22 19:48:44,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2021-12-22 19:48:44,560 INFO L704 BuchiCegarLoop]: Abstraction has 94 states and 124 transitions. [2021-12-22 19:48:44,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 19:48:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:48:44,561 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) [2021-12-22 19:48:44,577 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 [2021-12-22 19:48:44,592 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 [2021-12-22 19:48:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:44,617 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-12-22 19:48:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 19:48:44,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 178 transitions. [2021-12-22 19:48:44,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-12-22 19:48:44,621 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 150 states and 168 transitions. [2021-12-22 19:48:44,621 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-12-22 19:48:44,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2021-12-22 19:48:44,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 168 transitions. [2021-12-22 19:48:44,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:44,621 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 168 transitions. [2021-12-22 19:48:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 168 transitions. [2021-12-22 19:48:44,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2021-12-22 19:48:44,624 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) [2021-12-22 19:48:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 158 transitions. [2021-12-22 19:48:44,624 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-12-22 19:48:44,624 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-12-22 19:48:44,624 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-22 19:48:44,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 158 transitions. [2021-12-22 19:48:44,625 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-12-22 19:48:44,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:44,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:44,626 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 6, 4, 2, 1, 1, 1] [2021-12-22 19:48:44,626 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-22 19:48:44,626 INFO L791 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 [2021-12-22 19:48:44,626 INFO L793 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 [2021-12-22 19:48:44,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash 178061768, now seen corresponding path program 1 times [2021-12-22 19:48:44,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:44,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329130368] [2021-12-22 19:48:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:44,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:44,709 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 19:48:44,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329130368] [2021-12-22 19:48:44,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329130368] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:48:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7212122] [2021-12-22 19:48:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:44,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:48:44,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,711 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) [2021-12-22 19:48:44,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-22 19:48:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:44,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 19:48:44,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 19:48:44,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:48:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-22 19:48:44,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7212122] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:48:44,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:48:44,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-22 19:48:44,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117875567] [2021-12-22 19:48:44,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:48:44,868 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:48:44,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:44,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2021-12-22 19:48:44,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:44,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538214884] [2021-12-22 19:48:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:44,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:44,872 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:44,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:44,894 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:44,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:44,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:44,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:44,894 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:44,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:44,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:44,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2021-12-22 19:48:44,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:44,895 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:44,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:44,937 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:44,937 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:44,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,944 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) [2021-12-22 19:48:44,945 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 [2021-12-22 19:48:44,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:44,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:44,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:44,959 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: [] [2021-12-22 19:48:44,975 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 [2021-12-22 19:48:44,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:44,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:44,976 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) [2021-12-22 19:48:44,977 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 [2021-12-22 19:48:44,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:44,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:45,000 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 [2021-12-22 19:48:45,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:45,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:45,002 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) [2021-12-22 19:48:45,003 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 [2021-12-22 19:48:45,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:45,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:45,087 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:45,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-12-22 19:48:45,091 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:45,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:45,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:45,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:45,092 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:45,092 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:45,092 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:45,092 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:45,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2021-12-22 19:48:45,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:45,092 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:45,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:45,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:45,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:45,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:45,126 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:45,127 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:45,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:45,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:45,129 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) [2021-12-22 19:48:45,130 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 [2021-12-22 19:48:45,131 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 [2021-12-22 19:48:45,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:45,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:45,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:45,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:45,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:45,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:45,142 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:45,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-22 19:48:45,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:45,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:45,159 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) [2021-12-22 19:48:45,159 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 [2021-12-22 19:48:45,160 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 [2021-12-22 19:48:45,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:45,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:45,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:45,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:45,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:45,167 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:45,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:45,199 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:45,201 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:45,202 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-22 19:48:45,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:45,203 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) [2021-12-22 19:48:45,203 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 [2021-12-22 19:48:45,205 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:45,205 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:45,205 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:45,205 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 [] [2021-12-22 19:48:45,220 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 [2021-12-22 19:48:45,221 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:45,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:45,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:45,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:45,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:45,358 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 [2021-12-22 19:48:45,358 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) [2021-12-22 19:48:45,375 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. [2021-12-22 19:48:45,376 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 [2021-12-22 19:48:45,376 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) [2021-12-22 19:48:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-22 19:48:45,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-22 19:48:45,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:45,378 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-22 19:48:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:45,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:45,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:45,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:45,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:45,484 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 [2021-12-22 19:48:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:45,492 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 [2021-12-22 19:48:45,492 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) [2021-12-22 19:48:45,514 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. [2021-12-22 19:48:45,514 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 [2021-12-22 19:48:45,515 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) [2021-12-22 19:48:45,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-22 19:48:45,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-22 19:48:45,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:45,515 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-22 19:48:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:45,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:45,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:45,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:45,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:45,604 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 [2021-12-22 19:48:45,604 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) [2021-12-22 19:48:45,620 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. [2021-12-22 19:48:45,620 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 [2021-12-22 19:48:45,621 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) [2021-12-22 19:48:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-22 19:48:45,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-22 19:48:45,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:45,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 48 letters. Loop has 4 letters. [2021-12-22 19:48:45,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:45,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-22 19:48:45,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:45,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 187 states and 211 transitions. [2021-12-22 19:48:45,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-12-22 19:48:45,624 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 187 states to 144 states and 161 transitions. [2021-12-22 19:48:45,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-12-22 19:48:45,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-12-22 19:48:45,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 161 transitions. [2021-12-22 19:48:45,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:45,624 INFO L681 BuchiCegarLoop]: Abstraction has 144 states and 161 transitions. [2021-12-22 19:48:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 161 transitions. [2021-12-22 19:48:45,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2021-12-22 19:48:45,626 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) [2021-12-22 19:48:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-12-22 19:48:45,627 INFO L704 BuchiCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-12-22 19:48:45,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:48:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:48:45,627 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) [2021-12-22 19:48:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:45,679 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-12-22 19:48:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 19:48:45,680 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 208 transitions. [2021-12-22 19:48:45,681 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 82 [2021-12-22 19:48:45,681 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 178 states and 195 transitions. [2021-12-22 19:48:45,681 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-12-22 19:48:45,682 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2021-12-22 19:48:45,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 195 transitions. [2021-12-22 19:48:45,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:45,682 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 195 transitions. [2021-12-22 19:48:45,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 195 transitions. [2021-12-22 19:48:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2021-12-22 19:48:45,685 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) [2021-12-22 19:48:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2021-12-22 19:48:45,685 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2021-12-22 19:48:45,685 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2021-12-22 19:48:45,685 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-22 19:48:45,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 185 transitions. [2021-12-22 19:48:45,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-22 19:48:45,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:45,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:45,687 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2021-12-22 19:48:45,687 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-22 19:48:45,687 INFO L791 eck$LassoCheckResult]: Stem: 3741#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3742#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3746#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3750#L12 assume !(main_~i~0#1 >= 10); 3756#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3753#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3755#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3862#L12 assume !(main_~i~0#1 >= 10); 3808#L12-2 assume !(main_~i~0#1 <= 0); 3809#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3885#L12 assume !(main_~i~0#1 >= 10); 3860#L12-2 assume !(main_~i~0#1 <= 0); 3861#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3883#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3881#L12 assume !(main_~i~0#1 >= 10); 3879#L12-2 assume !(main_~i~0#1 <= 0); 3854#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3853#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3851#L12 assume !(main_~i~0#1 >= 10); 3852#L12-2 assume !(main_~i~0#1 <= 0); 3848#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3737#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3738#L12 assume !(main_~i~0#1 >= 10); 3866#L12-2 assume !(main_~i~0#1 <= 0); 3865#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3863#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3801#L12 [2021-12-22 19:48:45,688 INFO L793 eck$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 [2021-12-22 19:48:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1514411024, now seen corresponding path program 1 times [2021-12-22 19:48:45,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802714229] [2021-12-22 19:48:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:45,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:45,693 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:45,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:45,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 1 times [2021-12-22 19:48:45,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:45,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328876487] [2021-12-22 19:48:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:45,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:45,707 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:45,715 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash -883489176, now seen corresponding path program 2 times [2021-12-22 19:48:45,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:45,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199814130] [2021-12-22 19:48:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:45,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-22 19:48:45,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:45,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199814130] [2021-12-22 19:48:45,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199814130] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:48:45,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981347356] [2021-12-22 19:48:45,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:48:45,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:48:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:45,771 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) [2021-12-22 19:48:45,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-12-22 19:48:45,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:48:45,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:48:45,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 19:48:45,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-22 19:48:45,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:48:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-22 19:48:46,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981347356] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:48:46,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:48:46,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-12-22 19:48:46,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934994767] [2021-12-22 19:48:46,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:48:46,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:48:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:48:46,426 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) [2021-12-22 19:48:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:46,494 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2021-12-22 19:48:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 19:48:46,495 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 229 transitions. [2021-12-22 19:48:46,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-22 19:48:46,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 208 states and 223 transitions. [2021-12-22 19:48:46,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2021-12-22 19:48:46,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2021-12-22 19:48:46,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 223 transitions. [2021-12-22 19:48:46,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:46,498 INFO L681 BuchiCegarLoop]: Abstraction has 208 states and 223 transitions. [2021-12-22 19:48:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 223 transitions. [2021-12-22 19:48:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2021-12-22 19:48:46,500 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) [2021-12-22 19:48:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2021-12-22 19:48:46,501 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-12-22 19:48:46,501 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-12-22 19:48:46,501 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-22 19:48:46,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 182 transitions. [2021-12-22 19:48:46,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-22 19:48:46,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:46,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:46,503 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-22 19:48:46,503 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-22 19:48:46,504 INFO L791 eck$LassoCheckResult]: Stem: 4776#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4777#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4779#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4791#L12 assume !(main_~i~0#1 >= 10); 4788#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4784#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4786#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4831#L12 assume !(main_~i~0#1 >= 10); 4828#L12-2 assume !(main_~i~0#1 <= 0); 4827#L15-1 [2021-12-22 19:48:46,504 INFO L793 eck$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 [2021-12-22 19:48:46,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash 644068259, now seen corresponding path program 2 times [2021-12-22 19:48:46,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:46,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820040124] [2021-12-22 19:48:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:46,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:46,508 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:46,510 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1888138361, now seen corresponding path program 2 times [2021-12-22 19:48:46,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:46,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386163292] [2021-12-22 19:48:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:46,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:46,522 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:46,531 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:46,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1126640613, now seen corresponding path program 3 times [2021-12-22 19:48:46,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:46,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550436202] [2021-12-22 19:48:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:46,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:46,540 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:46,547 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:46,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 07:48:46 BoogieIcfgContainer [2021-12-22 19:48:46,974 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 19:48:46,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:48:46,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:48:46,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:48:46,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:48:40" (3/4) ... [2021-12-22 19:48:46,977 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-22 19:48:47,003 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:48:47,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:48:47,004 INFO L158 Benchmark]: Toolchain (without parser) took 6949.57ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 85.5MB in the beginning and 56.9MB in the end (delta: 28.7MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2021-12-22 19:48:47,004 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:48:47,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 138.43ms. Allocated memory is still 107.0MB. Free memory was 85.3MB in the beginning and 78.1MB in the end (delta: 7.2MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-12-22 19:48:47,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.95ms. Allocated memory is still 107.0MB. Free memory was 78.1MB in the beginning and 85.4MB in the end (delta: -7.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:48:47,005 INFO L158 Benchmark]: Boogie Preprocessor took 11.67ms. Allocated memory is still 107.0MB. Free memory was 85.4MB in the beginning and 84.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:48:47,005 INFO L158 Benchmark]: RCFGBuilder took 216.79ms. Allocated memory is still 107.0MB. Free memory was 84.1MB in the beginning and 75.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:48:47,005 INFO L158 Benchmark]: BuchiAutomizer took 6505.97ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 75.7MB in the beginning and 60.0MB in the end (delta: 15.7MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2021-12-22 19:48:47,005 INFO L158 Benchmark]: Witness Printer took 28.65ms. Allocated memory is still 130.0MB. Free memory was 60.0MB in the beginning and 56.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 19:48:47,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 138.43ms. Allocated memory is still 107.0MB. Free memory was 85.3MB in the beginning and 78.1MB in the end (delta: 7.2MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.95ms. Allocated memory is still 107.0MB. Free memory was 78.1MB in the beginning and 85.4MB in the end (delta: -7.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.67ms. Allocated memory is still 107.0MB. Free memory was 85.4MB in the beginning and 84.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.79ms. Allocated memory is still 107.0MB. Free memory was 84.1MB in the beginning and 75.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6505.97ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 75.7MB in the beginning and 60.0MB in the end (delta: 15.7MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * Witness Printer took 28.65ms. Allocated memory is still 130.0MB. Free memory was 60.0MB in the beginning and 56.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 6.4s and 11 iterations. TraceHistogramMax:20. Analysis of lassos took 5.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 14. Automata minimization 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 232 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 168 states and ocurred in iteration 9. Nontrivial modules had stage [6, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.2s 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: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - 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@11a4e0bf=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! [2021-12-22 19:48:47,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:47,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-12-22 19:48:47,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:47,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-22 19:48:47,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, 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)