./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2a8c97e87f793b5839cb424b8cc5fefc3a9d4b8a56c80aade72a0ae572eae02d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 01:26:21,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:26:21,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:26:21,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:26:21,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:26:21,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:26:21,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:26:21,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:26:21,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:26:21,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:26:21,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:26:21,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:26:21,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:26:21,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:26:21,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:26:21,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:26:21,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:26:21,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:26:21,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:26:21,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:26:21,474 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:26:21,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:26:21,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:26:21,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:26:21,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:26:21,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:26:21,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:26:21,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:26:21,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:26:21,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:26:21,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:26:21,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:26:21,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:26:21,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:26:21,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:26:21,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:26:21,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:26:21,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:26:21,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:26:21,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:26:21,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:26:21,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:26:21,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:26:21,534 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:26:21,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:26:21,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:26:21,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:26:21,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:26:21,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:26:21,536 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:26:21,537 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:26:21,537 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:26:21,538 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:26:21,538 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:26:21,538 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:26:21,538 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:26:21,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:26:21,538 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:26:21,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:26:21,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:26:21,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:26:21,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:26:21,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:26:21,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:26:21,540 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:26:21,540 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:26:21,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:26:21,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:26:21,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:26:21,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:26:21,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:26:21,543 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:26:21,543 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a8c97e87f793b5839cb424b8cc5fefc3a9d4b8a56c80aade72a0ae572eae02d [2022-07-22 01:26:21,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:26:21,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:26:21,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:26:21,860 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:26:21,861 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:26:21,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2022-07-22 01:26:21,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49796ceaa/faa251518d8547b79df01b3dc6baa692/FLAGf623bf3af [2022-07-22 01:26:22,218 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:26:22,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2022-07-22 01:26:22,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49796ceaa/faa251518d8547b79df01b3dc6baa692/FLAGf623bf3af [2022-07-22 01:26:22,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49796ceaa/faa251518d8547b79df01b3dc6baa692 [2022-07-22 01:26:22,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:26:22,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:26:22,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:26:22,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:26:22,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:26:22,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f96d758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22, skipping insertion in model container [2022-07-22 01:26:22,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:26:22,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:26:22,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:26:22,785 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:26:22,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:26:22,802 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:26:22,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22 WrapperNode [2022-07-22 01:26:22,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:26:22,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:26:22,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:26:22,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:26:22,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,823 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-07-22 01:26:22,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:26:22,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:26:22,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:26:22,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:26:22,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:26:22,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:26:22,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:26:22,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:26:22,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (1/1) ... [2022-07-22 01:26:22,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:22,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:22,905 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) [2022-07-22 01:26:22,912 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 [2022-07-22 01:26:22,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:26:22,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:26:22,977 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:26:22,979 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:26:23,063 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:26:23,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:26:23,068 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 01:26:23,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:26:23 BoogieIcfgContainer [2022-07-22 01:26:23,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:26:23,072 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:26:23,072 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:26:23,074 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:26:23,075 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:26:23,075 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:26:22" (1/3) ... [2022-07-22 01:26:23,076 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26a952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:26:23, skipping insertion in model container [2022-07-22 01:26:23,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:26:23,076 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:26:22" (2/3) ... [2022-07-22 01:26:23,077 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26a952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:26:23, skipping insertion in model container [2022-07-22 01:26:23,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:26:23,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:26:23" (3/3) ... [2022-07-22 01:26:23,079 INFO L354 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2022-07-22 01:26:23,130 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:26:23,130 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:26:23,130 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:26:23,130 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:26:23,131 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:26:23,131 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:26:23,131 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:26:23,132 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:26:23,135 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:26:23,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:26:23,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:26:23,153 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:26:23,159 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:26:23,159 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:26:23,159 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:26:23,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:26:23,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:26:23,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:26:23,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:26:23,161 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:26:23,161 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:26:23,166 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 7#L21-2true [2022-07-22 01:26:23,167 INFO L754 eck$LassoCheckResult]: Loop: 7#L21-2true assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 4#L18true assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1; 7#L21-2true [2022-07-22 01:26:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-22 01:26:23,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:23,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134462677] [2022-07-22 01:26:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:23,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:23,239 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:26:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:23,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:26:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-07-22 01:26:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:23,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585433275] [2022-07-22 01:26:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:23,265 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:26:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:23,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:26:23,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:23,270 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-22 01:26:23,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:23,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874447502] [2022-07-22 01:26:23,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:23,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:23,276 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:26:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:23,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:26:23,344 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:26:23,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:26:23,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:26:23,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:26:23,345 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:26:23,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,346 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:26:23,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:26:23,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2022-07-22 01:26:23,346 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:26:23,346 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:26:23,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:23,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:23,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:23,433 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:26:23,434 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:26:23,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:23,438 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) [2022-07-22 01:26:23,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:26:23,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:23,460 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 [2022-07-22 01:26:23,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:26:23,470 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:26:23,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-22 01:26:23,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:23,493 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) [2022-07-22 01:26:23,494 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 [2022-07-22 01:26:23,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:26:23,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:23,518 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:26:23,518 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:26:23,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-22 01:26:23,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:23,540 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) [2022-07-22 01:26:23,555 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 [2022-07-22 01:26:23,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:26:23,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:23,597 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 [2022-07-22 01:26:23,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:23,599 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) [2022-07-22 01:26:23,600 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 [2022-07-22 01:26:23,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:26:23,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:23,649 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:26:23,652 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 [2022-07-22 01:26:23,652 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:26:23,653 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:26:23,653 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:26:23,653 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:26:23,653 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:26:23,653 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:26:23,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:26:23,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2022-07-22 01:26:23,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:26:23,653 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:26:23,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:23,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:23,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:23,725 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:26:23,728 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:26:23,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:23,730 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) [2022-07-22 01:26:23,732 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 [2022-07-22 01:26:23,733 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 [2022-07-22 01:26:23,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:26:23,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:26:23,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:26:23,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:26:23,744 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:26:23,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:26:23,761 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:26:23,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-22 01:26:23,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:23,778 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) [2022-07-22 01:26:23,779 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 [2022-07-22 01:26:23,780 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 [2022-07-22 01:26:23,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:26:23,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:26:23,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:26:23,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:26:23,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:26:23,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:26:23,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:26:23,798 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:26:23,800 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:26:23,801 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:26:23,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:23,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:23,803 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) [2022-07-22 01:26:23,804 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 [2022-07-22 01:26:23,806 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:26:23,806 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:26:23,806 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:26:23,807 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2022-07-22 01:26:23,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-07-22 01:26:23,826 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:26:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:26:23,866 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:26:23,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:26:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:26:23,876 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:26:23,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:26:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:26:23,935 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 [2022-07-22 01:26:23,941 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:26:23,942 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:26:23,977 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 40 transitions. Complement of second has 7 states. [2022-07-22 01:26:23,978 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 [2022-07-22 01:26:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:26:23,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-07-22 01:26:23,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-22 01:26:23,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:26:23,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-22 01:26:23,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:26:23,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-22 01:26:23,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:26:23,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2022-07-22 01:26:24,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:26:24,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 11 states and 16 transitions. [2022-07-22 01:26:24,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-22 01:26:24,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-07-22 01:26:24,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2022-07-22 01:26:24,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:26:24,004 INFO L369 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2022-07-22 01:26:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2022-07-22 01:26:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-22 01:26:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:26:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2022-07-22 01:26:24,021 INFO L392 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-07-22 01:26:24,021 INFO L374 stractBuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2022-07-22 01:26:24,021 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 01:26:24,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2022-07-22 01:26:24,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:26:24,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:26:24,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:26:24,022 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 01:26:24,022 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:26:24,023 INFO L752 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 85#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 88#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 79#L18 [2022-07-22 01:26:24,023 INFO L754 eck$LassoCheckResult]: Loop: 79#L18 assume !(main_~q~0#1 < main_~p~0#1); 80#L21 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1; 86#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 79#L18 [2022-07-22 01:26:24,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:24,023 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-22 01:26:24,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:24,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794643129] [2022-07-22 01:26:24,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:24,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,028 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:26:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:26:24,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:24,031 INFO L85 PathProgramCache]: Analyzing trace with hash 45767, now seen corresponding path program 1 times [2022-07-22 01:26:24,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:24,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558410398] [2022-07-22 01:26:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:24,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,036 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:26:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:26:24,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash 889694400, now seen corresponding path program 1 times [2022-07-22 01:26:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:24,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231650798] [2022-07-22 01:26:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,046 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:26:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:26:24,070 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:26:24,071 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:26:24,071 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:26:24,071 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:26:24,071 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:26:24,071 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,071 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:26:24,071 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:26:24,072 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2022-07-22 01:26:24,072 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:26:24,072 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:26:24,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:24,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:24,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:24,107 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:26:24,107 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:26:24,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,109 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) [2022-07-22 01:26:24,110 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 [2022-07-22 01:26:24,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:26:24,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:24,130 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:26:24,130 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:26:24,148 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 [2022-07-22 01:26:24,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,150 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) [2022-07-22 01:26:24,151 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 [2022-07-22 01:26:24,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:26:24,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:24,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:26:24,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:26:24,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-22 01:26:24,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,183 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) [2022-07-22 01:26:24,184 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 [2022-07-22 01:26:24,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:26:24,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:24,219 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 [2022-07-22 01:26:24,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,236 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) [2022-07-22 01:26:24,237 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 [2022-07-22 01:26:24,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:26:24,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:26:24,306 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:26:24,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-22 01:26:24,309 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:26:24,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:26:24,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:26:24,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:26:24,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:26:24,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:26:24,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:26:24,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2022-07-22 01:26:24,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:26:24,310 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:26:24,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:24,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:24,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:26:24,371 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:26:24,372 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:26:24,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,373 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) [2022-07-22 01:26:24,373 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 [2022-07-22 01:26:24,375 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 [2022-07-22 01:26:24,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:26:24,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:26:24,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:26:24,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:26:24,383 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:26:24,383 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:26:24,403 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:26:24,423 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 [2022-07-22 01:26:24,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,424 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) [2022-07-22 01:26:24,425 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 [2022-07-22 01:26:24,427 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 [2022-07-22 01:26:24,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:26:24,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:26:24,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:26:24,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:26:24,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:26:24,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:26:24,443 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:26:24,460 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 [2022-07-22 01:26:24,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,462 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) [2022-07-22 01:26:24,463 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 [2022-07-22 01:26:24,464 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 [2022-07-22 01:26:24,470 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:26:24,470 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:26:24,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:26:24,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:26:24,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:26:24,471 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:26:24,471 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:26:24,478 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:26:24,480 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-22 01:26:24,480 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-22 01:26:24,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:26:24,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:26:24,481 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) [2022-07-22 01:26:24,482 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 [2022-07-22 01:26:24,483 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:26:24,483 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:26:24,484 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:26:24,484 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2022-07-22 01:26:24,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-07-22 01:26:24,502 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:26:24,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:26:24,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:26:24,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:26:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:26:24,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:26:24,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:26:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:26:24,566 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:26:24,567 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:26:24,603 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 39 transitions. Complement of second has 6 states. [2022-07-22 01:26:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:26:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 01:26:24,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-07-22 01:26:24,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2022-07-22 01:26:24,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:26:24,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-22 01:26:24,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:26:24,607 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2022-07-22 01:26:24,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:26:24,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 39 transitions. [2022-07-22 01:26:24,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:26:24,615 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 36 transitions. [2022-07-22 01:26:24,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-22 01:26:24,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-07-22 01:26:24,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 36 transitions. [2022-07-22 01:26:24,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:26:24,615 INFO L369 hiAutomatonCegarLoop]: Abstraction has 24 states and 36 transitions. [2022-07-22 01:26:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 36 transitions. [2022-07-22 01:26:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-07-22 01:26:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 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) [2022-07-22 01:26:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2022-07-22 01:26:24,618 INFO L392 hiAutomatonCegarLoop]: Abstraction has 23 states and 35 transitions. [2022-07-22 01:26:24,618 INFO L374 stractBuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2022-07-22 01:26:24,618 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-22 01:26:24,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2022-07-22 01:26:24,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:26:24,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:26:24,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:26:24,620 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-22 01:26:24,620 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:26:24,620 INFO L752 eck$LassoCheckResult]: Stem: 161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 167#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 174#L18 assume !(main_~q~0#1 < main_~p~0#1); 163#L21 [2022-07-22 01:26:24,620 INFO L754 eck$LassoCheckResult]: Loop: 163#L21 assume !(main_~p~0#1 < main_~q~0#1); 164#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 166#L18 assume !(main_~q~0#1 < main_~p~0#1); 163#L21 [2022-07-22 01:26:24,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-22 01:26:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:24,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425844394] [2022-07-22 01:26:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:24,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,625 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:26:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:26:24,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:26:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:26:24,630 INFO L85 PathProgramCache]: Analyzing trace with hash 50329, now seen corresponding path program 1 times [2022-07-22 01:26:24,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:26:24,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689284390] [2022-07-22 01:26:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:26:24,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:26:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:26:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:26:24,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 01:26:24,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689284390] [2022-07-22 01:26:24,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689284390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 01:26:24,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 01:26:24,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 01:26:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879894695] [2022-07-22 01:26:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 01:26:24,666 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-22 01:26:24,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 01:26:24,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 01:26:24,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 01:26:24,669 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. cyclomatic complexity: 16 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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) [2022-07-22 01:26:24,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 01:26:24,681 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2022-07-22 01:26:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 01:26:24,682 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2022-07-22 01:26:24,683 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:26:24,683 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2022-07-22 01:26:24,683 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 01:26:24,683 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 01:26:24,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 01:26:24,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 01:26:24,683 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:26:24,683 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:26:24,683 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:26:24,683 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-22 01:26:24,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-22 01:26:24,683 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:26:24,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-22 01:26:24,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:26:24 BoogieIcfgContainer [2022-07-22 01:26:24,688 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:26:24,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:26:24,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:26:24,689 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:26:24,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:26:23" (3/4) ... [2022-07-22 01:26:24,691 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 01:26:24,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:26:24,692 INFO L158 Benchmark]: Toolchain (without parser) took 2028.33ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 28.2MB in the beginning and 28.7MB in the end (delta: -523.4kB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2022-07-22 01:26:24,692 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory is still 31.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:26:24,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 131.22ms. Allocated memory is still 50.3MB. Free memory was 28.0MB in the beginning and 30.5MB in the end (delta: -2.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-07-22 01:26:24,692 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.92ms. Allocated memory is still 50.3MB. Free memory was 30.5MB in the beginning and 29.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:26:24,693 INFO L158 Benchmark]: Boogie Preprocessor took 15.77ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 47.2MB in the end (delta: -18.1MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-07-22 01:26:24,693 INFO L158 Benchmark]: RCFGBuilder took 229.15ms. Allocated memory is still 62.9MB. Free memory was 47.0MB in the beginning and 39.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 01:26:24,693 INFO L158 Benchmark]: BuchiAutomizer took 1616.64ms. Allocated memory is still 62.9MB. Free memory was 38.9MB in the beginning and 29.1MB in the end (delta: 9.8MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-07-22 01:26:24,693 INFO L158 Benchmark]: Witness Printer took 2.33ms. Allocated memory is still 62.9MB. Free memory was 29.1MB in the beginning and 28.7MB in the end (delta: 353.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:26:24,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 50.3MB. Free memory is still 31.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 131.22ms. Allocated memory is still 50.3MB. Free memory was 28.0MB in the beginning and 30.5MB in the end (delta: -2.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.92ms. Allocated memory is still 50.3MB. Free memory was 30.5MB in the beginning and 29.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.77ms. Allocated memory was 50.3MB in the beginning and 62.9MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 47.2MB in the end (delta: -18.1MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * RCFGBuilder took 229.15ms. Allocated memory is still 62.9MB. Free memory was 47.0MB in the beginning and 39.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1616.64ms. Allocated memory is still 62.9MB. Free memory was 38.9MB in the beginning and 29.1MB in the end (delta: 9.8MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Witness Printer took 2.33ms. Allocated memory is still 62.9MB. Free memory was 29.1MB in the beginning and 28.7MB in the end (delta: 353.0kB). 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 18 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax192 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie120 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-22 01:26:24,719 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 [2022-07-22 01:26:24,932 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