./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 15:40:55,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 15:40:55,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 15:40:55,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 15:40:55,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 15:40:55,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 15:40:55,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 15:40:55,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 15:40:55,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 15:40:55,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 15:40:55,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 15:40:55,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 15:40:55,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 15:40:55,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 15:40:55,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 15:40:55,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 15:40:55,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 15:40:55,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 15:40:55,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 15:40:55,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 15:40:55,447 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 15:40:55,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 15:40:55,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 15:40:55,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 15:40:55,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 15:40:55,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 15:40:55,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 15:40:55,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 15:40:55,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 15:40:55,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 15:40:55,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 15:40:55,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 15:40:55,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 15:40:55,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 15:40:55,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 15:40:55,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 15:40:55,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 15:40:55,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 15:40:55,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 15:40:55,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 15:40:55,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 15:40:55,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 15:40:55,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 15:40:55,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 15:40:55,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 15:40:55,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 15:40:55,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 15:40:55,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 15:40:55,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 15:40:55,500 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 15:40:55,501 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 15:40:55,501 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 15:40:55,501 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 15:40:55,502 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 15:40:55,502 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 15:40:55,502 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 15:40:55,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 15:40:55,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 15:40:55,503 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 15:40:55,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 15:40:55,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 15:40:55,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 15:40:55,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 15:40:55,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 15:40:55,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 15:40:55,504 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 15:40:55,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 15:40:55,504 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 15:40:55,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 15:40:55,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 15:40:55,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 15:40:55,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 15:40:55,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 15:40:55,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 15:40:55,506 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 15:40:55,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e [2022-07-14 15:40:55,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 15:40:55,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 15:40:55,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 15:40:55,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 15:40:55,717 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 15:40:55,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2022-07-14 15:40:55,776 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb837bd0/56dfe4c1e916405bbfe25f0b1a27824d/FLAGb9f900401 [2022-07-14 15:40:56,157 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 15:40:56,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2022-07-14 15:40:56,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb837bd0/56dfe4c1e916405bbfe25f0b1a27824d/FLAGb9f900401 [2022-07-14 15:40:56,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb837bd0/56dfe4c1e916405bbfe25f0b1a27824d [2022-07-14 15:40:56,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 15:40:56,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 15:40:56,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 15:40:56,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 15:40:56,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 15:40:56,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b293a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56, skipping insertion in model container [2022-07-14 15:40:56,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 15:40:56,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 15:40:56,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2022-07-14 15:40:56,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:40:56,363 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 15:40:56,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2022-07-14 15:40:56,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 15:40:56,387 INFO L208 MainTranslator]: Completed translation [2022-07-14 15:40:56,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56 WrapperNode [2022-07-14 15:40:56,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 15:40:56,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 15:40:56,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 15:40:56,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 15:40:56,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,413 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-07-14 15:40:56,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 15:40:56,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 15:40:56,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 15:40:56,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 15:40:56,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 15:40:56,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 15:40:56,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 15:40:56,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 15:40:56,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (1/1) ... [2022-07-14 15:40:56,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:56,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:56,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-14 15:40:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 15:40:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 15:40:56,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 15:40:56,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 15:40:56,559 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 15:40:56,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 15:40:56,637 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 15:40:56,641 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 15:40:56,641 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-14 15:40:56,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:40:56 BoogieIcfgContainer [2022-07-14 15:40:56,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 15:40:56,643 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 15:40:56,643 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 15:40:56,646 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 15:40:56,646 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:40:56,647 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 03:40:56" (1/3) ... [2022-07-14 15:40:56,647 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5789d6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:40:56, skipping insertion in model container [2022-07-14 15:40:56,651 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:40:56,651 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 03:40:56" (2/3) ... [2022-07-14 15:40:56,651 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5789d6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 03:40:56, skipping insertion in model container [2022-07-14 15:40:56,652 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 15:40:56,652 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:40:56" (3/3) ... [2022-07-14 15:40:56,653 INFO L354 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2022-07-14 15:40:56,709 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 15:40:56,710 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 15:40:56,710 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 15:40:56,710 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 15:40:56,710 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 15:40:56,710 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 15:40:56,710 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 15:40:56,711 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 15:40:56,713 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:56,726 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2022-07-14 15:40:56,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:40:56,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:40:56,729 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 15:40:56,729 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:40:56,730 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 15:40:56,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:56,731 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2022-07-14 15:40:56,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:40:56,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:40:56,731 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 15:40:56,731 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:40:56,736 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 15#L31-2true [2022-07-14 15:40:56,736 INFO L754 eck$LassoCheckResult]: Loop: 15#L31-2true assume !!(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1;main_~i~0#1 := 1 + main_~i~0#1; 15#L31-2true [2022-07-14 15:40:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-14 15:40:56,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:56,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565182305] [2022-07-14 15:40:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:56,824 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:56,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:56,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2022-07-14 15:40:56,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:56,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876728708] [2022-07-14 15:40:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:56,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:56,870 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:56,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-14 15:40:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:56,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33320829] [2022-07-14 15:40:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:56,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:56,899 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:56,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:56,999 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:40:56,999 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:40:56,999 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:40:56,999 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:40:57,000 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:40:57,000 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,000 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:40:57,000 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:40:57,000 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2022-07-14 15:40:57,000 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:40:57,000 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:40:57,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,055 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:40:57,056 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:40:57,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-14 15:40:57,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:40:57,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:57,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-14 15:40:57,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-14 15:40:57,095 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:40:57,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:57,125 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:40:57,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-07-14 15:40:57,135 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:40:57,135 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:40:57,135 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:40:57,135 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:40:57,135 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:40:57,135 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,135 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:40:57,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:40:57,136 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2022-07-14 15:40:57,136 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:40:57,136 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:40:57,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,169 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:40:57,173 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:40:57,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-14 15:40:57,182 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:40:57,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:40:57,189 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:40:57,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:40:57,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:40:57,189 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:40:57,191 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:40:57,191 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:40:57,215 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:40:57,220 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:40:57,220 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:40:57,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-14 15:40:57,256 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:40:57,256 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:40:57,256 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:40:57,257 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2022-07-14 15:40:57,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:57,278 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:40:57,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:40:57,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:40:57,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:40:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:40:57,355 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:40:57,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:40:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:40:57,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-14 15:40:57,397 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:57,448 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 32 states and 50 transitions. Complement of second has 6 states. [2022-07-14 15:40:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-14 15:40:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2022-07-14 15:40:57,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 1 letters. [2022-07-14 15:40:57,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:57,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 3 letters. Loop has 1 letters. [2022-07-14 15:40:57,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:57,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-14 15:40:57,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:57,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 50 transitions. [2022-07-14 15:40:57,461 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-14 15:40:57,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 13 states and 19 transitions. [2022-07-14 15:40:57,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-14 15:40:57,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-07-14 15:40:57,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2022-07-14 15:40:57,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:40:57,465 INFO L369 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-14 15:40:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2022-07-14 15:40:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-14 15:40:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-07-14 15:40:57,486 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-14 15:40:57,486 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-14 15:40:57,486 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 15:40:57,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-07-14 15:40:57,488 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-14 15:40:57,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:40:57,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:40:57,489 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-14 15:40:57,489 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 15:40:57,490 INFO L752 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 85#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 91#L31-2 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 92#L31-3 assume !(main_~i~0#1 > main_~pvlen~0#1); 89#L34-1 main_~i~0#1 := 0; 90#L38-2 [2022-07-14 15:40:57,490 INFO L754 eck$LassoCheckResult]: Loop: 90#L38-2 assume !!(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1;main_~tmp___1~0#1 := main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;main_~k~0#1 := 1 + main_~k~0#1; 90#L38-2 [2022-07-14 15:40:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash 28697992, now seen corresponding path program 1 times [2022-07-14 15:40:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:57,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747315134] [2022-07-14 15:40:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:57,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:57,516 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:57,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:57,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash 61, now seen corresponding path program 1 times [2022-07-14 15:40:57,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:57,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488288765] [2022-07-14 15:40:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:57,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:57,532 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:57,536 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:57,537 INFO L85 PathProgramCache]: Analyzing trace with hash 889637782, now seen corresponding path program 1 times [2022-07-14 15:40:57,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:57,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315205174] [2022-07-14 15:40:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:57,546 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:57,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:57,579 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:40:57,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:40:57,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:40:57,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:40:57,580 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:40:57,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:40:57,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:40:57,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2022-07-14 15:40:57,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:40:57,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:40:57,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,631 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:40:57,631 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:40:57,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,632 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-14 15:40:57,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:40:57,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:57,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-07-14 15:40:57,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,661 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-14 15:40:57,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:40:57,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:57,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:57,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 15:40:57,729 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=-1}, {ULTIMATE.start_main_~k~0#1=3}] Lambdas: [0, 4, 1] Nus: [1, 1] [2022-07-14 15:40:57,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:57,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-14 15:40:57,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:40:57,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:57,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:57,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,802 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-14 15:40:57,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:40:57,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:57,832 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:40:57,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:57,836 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:40:57,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:40:57,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:40:57,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:40:57,836 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:40:57,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:40:57,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:40:57,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2022-07-14 15:40:57,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:40:57,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:40:57,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:57,877 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:40:57,877 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:40:57,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,878 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-14 15:40:57,880 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:40:57,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:40:57,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:40:57,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:40:57,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:40:57,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:40:57,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:40:57,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:40:57,889 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:40:57,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-14 15:40:57,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-14 15:40:57,908 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:40:57,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:40:57,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:40:57,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:40:57,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:40:57,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:40:57,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:40:57,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:40:57,925 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:40:57,927 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 15:40:57,927 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-14 15:40:57,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:57,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:57,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:57,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-14 15:40:57,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:40:57,957 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:40:57,957 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:40:57,957 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 2000001 Supporting invariants [] [2022-07-14 15:40:57,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:57,973 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:40:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:40:57,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:40:57,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:40:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:40:58,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:40:58,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:40:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:40:58,014 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-14 15:40:58,014 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:58,032 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 29 states and 40 transitions. Complement of second has 6 states. [2022-07-14 15:40:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-14 15:40:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-07-14 15:40:58,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 1 letters. [2022-07-14 15:40:58,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:58,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 6 letters. Loop has 1 letters. [2022-07-14 15:40:58,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:58,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-14 15:40:58,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:58,037 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 40 transitions. [2022-07-14 15:40:58,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 15:40:58,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 17 states and 23 transitions. [2022-07-14 15:40:58,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-07-14 15:40:58,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-07-14 15:40:58,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2022-07-14 15:40:58,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:40:58,044 INFO L369 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-07-14 15:40:58,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2022-07-14 15:40:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-07-14 15:40:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2022-07-14 15:40:58,047 INFO L392 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2022-07-14 15:40:58,047 INFO L374 stractBuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2022-07-14 15:40:58,047 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 15:40:58,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2022-07-14 15:40:58,048 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 15:40:58,049 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 15:40:58,049 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 15:40:58,050 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 15:40:58,050 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 15:40:58,051 INFO L752 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 165#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~i~0#1, main_~pvlen~0#1, main_~tmp___1~0#1, main_~k~0#1, main_~n~0#1, main_~j~0#1;havoc main_~i~0#1;havoc main_~pvlen~0#1;havoc main_~tmp___1~0#1;main_~k~0#1 := 0;havoc main_~n~0#1;main_~i~0#1 := 0;main_~pvlen~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 173#L31-2 assume !(0 != main_#t~nondet2#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet2#1; 174#L31-3 assume !(main_~i~0#1 > main_~pvlen~0#1); 169#L34-1 main_~i~0#1 := 0; 170#L38-2 assume !(0 != main_#t~nondet3#1 && main_~i~0#1 <= 1000000);havoc main_#t~nondet3#1; 167#L38-3 main_~j~0#1 := 0;main_~n~0#1 := main_~i~0#1; 168#L45-2 assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 162#L18 assume !(0 == __VERIFIER_assert_~cond#1); 163#L18-2 [2022-07-14 15:40:58,051 INFO L754 eck$LassoCheckResult]: Loop: 163#L18-2 assume { :end_inline___VERIFIER_assert } true;main_~k~0#1 := main_~k~0#1 - 1;main_~i~0#1 := main_~i~0#1 - 1;main_~j~0#1 := 1 + main_~j~0#1; 166#L50 assume !(main_~j~0#1 >= main_~n~0#1); 171#L45-2 assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 172#L18 assume !(0 == __VERIFIER_assert_~cond#1); 163#L18-2 [2022-07-14 15:40:58,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:58,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1044045579, now seen corresponding path program 1 times [2022-07-14 15:40:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:58,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404938736] [2022-07-14 15:40:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:58,067 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:58,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2559565, now seen corresponding path program 1 times [2022-07-14 15:40:58,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:58,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403540613] [2022-07-14 15:40:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:58,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:58,092 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 15:40:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 15:40:58,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 15:40:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash 667587905, now seen corresponding path program 1 times [2022-07-14 15:40:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 15:40:58,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621253443] [2022-07-14 15:40:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 15:40:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 15:40:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:40:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:40:58,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 15:40:58,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621253443] [2022-07-14 15:40:58,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621253443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 15:40:58,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 15:40:58,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 15:40:58,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670346756] [2022-07-14 15:40:58,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 15:40:58,240 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:40:58,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:40:58,240 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:40:58,240 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:40:58,241 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 15:40:58,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:40:58,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:40:58,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2022-07-14 15:40:58,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:40:58,241 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:40:58,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,296 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:40:58,296 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 15:40:58,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-14 15:40:58,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:40:58,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:58,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:58,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,340 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-14 15:40:58,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:40:58,342 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:58,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 15:40:58,372 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=0} Honda state: {ULTIMATE.start_main_~i~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0#1=-1}, {ULTIMATE.start_main_~i~0#1=-1}, {ULTIMATE.start_main_~i~0#1=1}] Lambdas: [0, 2, 1] Nus: [1, 1] [2022-07-14 15:40:58,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:58,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,396 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-14 15:40:58,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 15:40:58,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:58,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:58,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-14 15:40:58,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 15:40:58,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 15:40:58,718 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 15:40:58,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:58,724 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 15:40:58,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 15:40:58,724 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 15:40:58,724 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 15:40:58,724 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 15:40:58,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 15:40:58,724 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 15:40:58,724 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2022-07-14 15:40:58,724 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 15:40:58,724 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 15:40:58,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 15:40:58,776 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 15:40:58,777 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 15:40:58,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,778 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-14 15:40:58,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:40:58,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:40:58,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:40:58,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:40:58,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:40:58,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:40:58,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:40:58,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:40:58,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:40:58,823 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 [2022-07-14 15:40:58,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:40:58,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:40:58,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:40:58,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:40:58,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:40:58,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:40:58,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:40:58,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:40:58,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-14 15:40:58,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 15:40:58,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:58,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,871 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 15:40:58,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 15:40:58,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 15:40:58,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 15:40:58,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 15:40:58,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 15:40:58,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 15:40:58,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 15:40:58,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-14 15:40:58,893 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 15:40:58,896 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-14 15:40:58,896 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 15:40:58,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 15:40:58,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 15:40:58,898 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 15:40:58,904 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 15:40:58,904 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 15:40:58,904 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 15:40:58,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-14 15:40:58,904 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2022-07-14 15:40:58,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:58,921 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 15:40:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 15:40:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:40:58,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 15:40:58,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:40:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 15:40:58,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 15:40:58,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 15:40:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 15:40:59,016 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-14 15:40:59,016 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:59,027 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 34 transitions. Complement of second has 7 states. [2022-07-14 15:40:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-14 15:40:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2022-07-14 15:40:59,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-14 15:40:59,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:59,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 13 letters. Loop has 4 letters. [2022-07-14 15:40:59,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:59,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 9 letters. Loop has 8 letters. [2022-07-14 15:40:59,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 15:40:59,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2022-07-14 15:40:59,030 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:40:59,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2022-07-14 15:40:59,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 15:40:59,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 15:40:59,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 15:40:59,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:40:59,030 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:40:59,031 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:40:59,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 15:40:59,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 15:40:59,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 15:40:59,033 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 15:40:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 15:40:59,035 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-14 15:40:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 15:40:59,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-14 15:40:59,036 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:40:59,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 15:40:59,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 15:40:59,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 15:40:59,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 15:40:59,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 15:40:59,037 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:40:59,037 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:40:59,037 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 15:40:59,037 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 15:40:59,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-14 15:40:59,037 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 15:40:59,037 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-14 15:40:59,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 03:40:59 BoogieIcfgContainer [2022-07-14 15:40:59,042 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 15:40:59,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 15:40:59,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 15:40:59,042 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 15:40:59,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 03:40:56" (3/4) ... [2022-07-14 15:40:59,044 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 15:40:59,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 15:40:59,045 INFO L158 Benchmark]: Toolchain (without parser) took 2864.80ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 63.3MB in the beginning and 47.1MB in the end (delta: 16.2MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2022-07-14 15:40:59,045 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory was 50.2MB in the beginning and 50.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:40:59,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.97ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 69.4MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:40:59,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.23ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 67.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:40:59,046 INFO L158 Benchmark]: Boogie Preprocessor took 28.80ms. Allocated memory is still 94.4MB. Free memory was 67.9MB in the beginning and 67.0MB in the end (delta: 935.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 15:40:59,046 INFO L158 Benchmark]: RCFGBuilder took 198.41ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 58.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 15:40:59,046 INFO L158 Benchmark]: BuchiAutomizer took 2398.49ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 58.0MB in the beginning and 47.1MB in the end (delta: 10.9MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2022-07-14 15:40:59,047 INFO L158 Benchmark]: Witness Printer took 2.27ms. Allocated memory is still 123.7MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 15:40:59,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory was 50.2MB in the beginning and 50.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.97ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 69.4MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.23ms. Allocated memory is still 94.4MB. Free memory was 69.4MB in the beginning and 67.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.80ms. Allocated memory is still 94.4MB. Free memory was 67.9MB in the beginning and 67.0MB in the end (delta: 935.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 198.41ms. Allocated memory is still 94.4MB. Free memory was 67.0MB in the beginning and 58.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2398.49ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 58.0MB in the beginning and 47.1MB in the end (delta: 10.9MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. * Witness Printer took 2.27ms. Allocated memory is still 123.7MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function -1 * j + n and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 28 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf92 smp100 dnf100 smp100 tf112 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 82ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-14 15:40:59,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-14 15:40:59,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-14 15:40:59,488 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 Result: TRUE