./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3dbbec33 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/AlternKonv.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 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 14:43:20,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:43:20,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:43:20,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:43:20,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:43:20,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:43:20,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:43:20,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:43:20,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:43:20,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:43:20,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:43:20,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:43:20,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:43:20,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:43:20,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:43:21,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:43:21,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:43:21,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:43:21,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:43:21,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:43:21,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:43:21,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:43:21,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:43:21,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:43:21,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:43:21,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:43:21,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:43:21,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:43:21,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:43:21,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:43:21,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:43:21,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:43:21,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:43:21,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:43:21,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:43:21,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:43:21,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:43:21,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:43:21,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:43:21,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:43:21,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:43:21,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-14 14:43:21,038 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:43:21,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:43:21,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:43:21,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:43:21,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:43:21,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:43:21,040 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:43:21,041 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-14 14:43:21,041 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-14 14:43:21,041 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-14 14:43:21,041 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-14 14:43:21,041 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-14 14:43:21,041 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-14 14:43:21,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:43:21,042 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:43:21,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:43:21,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:43:21,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-14 14:43:21,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-14 14:43:21,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-14 14:43:21,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 14:43:21,043 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-14 14:43:21,043 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:43:21,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-14 14:43:21,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:43:21,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:43:21,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:43:21,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:43:21,045 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-14 14:43:21,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 [2023-02-14 14:43:21,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:43:21,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:43:21,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:43:21,251 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:43:21,252 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:43:21,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2023-02-14 14:43:22,361 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:43:22,521 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:43:22,522 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2023-02-14 14:43:22,528 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f8c8193/1a68ff795a884292abcef5f50703c590/FLAG986291b43 [2023-02-14 14:43:22,543 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f8c8193/1a68ff795a884292abcef5f50703c590 [2023-02-14 14:43:22,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:43:22,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:43:22,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:43:22,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:43:22,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:43:22,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407bff3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22, skipping insertion in model container [2023-02-14 14:43:22,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:43:22,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:43:22,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:43:22,705 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:43:22,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:43:22,728 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:43:22,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22 WrapperNode [2023-02-14 14:43:22,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:43:22,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:43:22,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:43:22,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:43:22,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,753 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-02-14 14:43:22,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:43:22,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:43:22,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:43:22,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:43:22,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,768 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:43:22,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:43:22,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:43:22,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:43:22,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (1/1) ... [2023-02-14 14:43:22,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:22,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:22,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-14 14:43:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:43:22,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:43:22,890 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:43:22,892 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:43:22,982 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:43:22,990 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:43:22,990 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 14:43:22,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:43:22 BoogieIcfgContainer [2023-02-14 14:43:22,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:43:22,994 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-14 14:43:22,994 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-14 14:43:22,997 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-14 14:43:22,998 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:43:22,998 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.02 02:43:22" (1/3) ... [2023-02-14 14:43:22,999 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b017d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:43:22, skipping insertion in model container [2023-02-14 14:43:22,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:43:22,999 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:43:22" (2/3) ... [2023-02-14 14:43:23,000 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b017d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:43:22, skipping insertion in model container [2023-02-14 14:43:23,000 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:43:23,000 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:43:22" (3/3) ... [2023-02-14 14:43:23,001 INFO L332 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2023-02-14 14:43:23,079 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-14 14:43:23,079 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-14 14:43:23,079 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-14 14:43:23,079 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-14 14:43:23,080 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-14 14:43:23,080 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-14 14:43:23,080 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-14 14:43:23,080 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-14 14:43:23,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:23,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-14 14:43:23,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:43:23,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:43:23,103 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:43:23,103 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 14:43:23,103 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-14 14:43:23,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:23,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-14 14:43:23,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:43:23,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:43:23,106 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:43:23,106 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 14:43:23,115 INFO L748 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L18-2true [2023-02-14 14:43:23,116 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(0 != main_~i~0#1); 7#L10true assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 3#L18true assume !(main_~i~0#1 > 0); 6#L18-2true [2023-02-14 14:43:23,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-14 14:43:23,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:23,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273559602] [2023-02-14 14:43:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:23,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:23,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:23,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:23,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:23,218 INFO L85 PathProgramCache]: Analyzing trace with hash 41231, now seen corresponding path program 1 times [2023-02-14 14:43:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:23,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963642868] [2023-02-14 14:43:23,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:23,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:23,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:23,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:23,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash 28700173, now seen corresponding path program 1 times [2023-02-14 14:43:23,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:23,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013127363] [2023-02-14 14:43:23,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:23,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:23,241 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:23,244 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:23,314 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:43:23,315 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:43:23,315 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:43:23,315 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:43:23,315 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:43:23,315 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:43:23,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:43:23,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2023-02-14 14:43:23,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:43:23,315 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:43:23,341 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:43:23,366 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:43:23,381 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:43:23,464 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:43:23,465 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:43:23,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-14 14:43:23,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:43:23,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:43:23,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:43:23,504 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 14:43:23,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-14 14:43:23,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-14 14:43:23,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:43:23,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:43:23,534 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:43:23,534 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 14:43:23,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-14 14:43:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-14 14:43:23,551 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:43:23,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:43:23,573 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 [2023-02-14 14:43:23,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-14 14:43:23,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:43:23,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:43:23,599 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 14:43:23,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-14 14:43:23,605 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:43:23,605 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:43:23,605 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:43:23,605 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:43:23,605 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:43:23,605 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:43:23,606 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:43:23,606 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2023-02-14 14:43:23,606 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:43:23,606 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:43:23,607 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:43:23,611 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:43:23,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:43:23,710 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:43:23,714 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:43:23,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,721 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-14 14:43:23,725 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:43:23,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:43:23,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:43:23,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:43:23,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:43:23,738 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:43:23,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:43:23,763 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:43:23,774 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 [2023-02-14 14:43:23,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-14 14:43:23,779 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:43:23,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:43:23,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:43:23,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:43:23,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:43:23,790 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:43:23,790 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:43:23,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:43:23,808 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 [2023-02-14 14:43:23,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,809 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-14 14:43:23,816 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:43:23,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:43:23,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 14:43:23,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:43:23,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:43:23,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:43:23,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 14:43:23,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 14:43:23,828 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:43:23,832 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 14:43:23,832 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-14 14:43:23,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:43:23,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:43:23,869 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:43:23,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-14 14:43:23,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:43:23,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 14:43:23,873 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:43:23,873 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-14 14:43:23,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-14 14:43:23,879 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 14:43:23,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:43:23,904 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:43:23,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:43:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:43:23,923 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 14:43:23,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:43:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:43:24,028 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 14:43:24,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:24,074 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 47 transitions. Complement of second has 6 states. [2023-02-14 14:43:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:43:24,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:24,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-02-14 14:43:24,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 3 letters. [2023-02-14 14:43:24,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:43:24,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-14 14:43:24,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:43:24,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 6 letters. [2023-02-14 14:43:24,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:43:24,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 47 transitions. [2023-02-14 14:43:24,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-14 14:43:24,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 15 states and 22 transitions. [2023-02-14 14:43:24,096 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-14 14:43:24,096 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-02-14 14:43:24,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2023-02-14 14:43:24,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:43:24,097 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2023-02-14 14:43:24,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2023-02-14 14:43:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-02-14 14:43:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2023-02-14 14:43:24,121 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-02-14 14:43:24,121 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-02-14 14:43:24,121 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-14 14:43:24,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2023-02-14 14:43:24,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-14 14:43:24,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:43:24,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:43:24,123 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-14 14:43:24,123 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 14:43:24,124 INFO L748 eck$LassoCheckResult]: Stem: 92#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 94#L18-2 assume !!(0 != main_~i~0#1); 89#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 91#L12 [2023-02-14 14:43:24,124 INFO L750 eck$LassoCheckResult]: Loop: 91#L12 assume !(main_~i~0#1 < 0); 83#L18-2 assume !!(0 != main_~i~0#1); 95#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 91#L12 [2023-02-14 14:43:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-02-14 14:43:24,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642127304] [2023-02-14 14:43:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:24,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash 53210, now seen corresponding path program 1 times [2023-02-14 14:43:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743446335] [2023-02-14 14:43:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:43:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:43:24,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:43:24,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743446335] [2023-02-14 14:43:24,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743446335] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:43:24,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:43:24,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-14 14:43:24,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098194261] [2023-02-14 14:43:24,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:43:24,195 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-14 14:43:24,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:43:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:43:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:43:24,198 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:24,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:43:24,213 INFO L93 Difference]: Finished difference Result 16 states and 23 transitions. [2023-02-14 14:43:24,214 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-02-14 14:43:24,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-02-14 14:43:24,215 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 23 transitions. [2023-02-14 14:43:24,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-02-14 14:43:24,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-14 14:43:24,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2023-02-14 14:43:24,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:43:24,216 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-02-14 14:43:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2023-02-14 14:43:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-14 14:43:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2023-02-14 14:43:24,218 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-02-14 14:43:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:43:24,219 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-02-14 14:43:24,219 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-14 14:43:24,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2023-02-14 14:43:24,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-02-14 14:43:24,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:43:24,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:43:24,220 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-02-14 14:43:24,221 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-14 14:43:24,221 INFO L748 eck$LassoCheckResult]: Stem: 130#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 131#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 132#L18-2 assume !!(0 != main_~i~0#1); 128#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 129#L12 [2023-02-14 14:43:24,221 INFO L750 eck$LassoCheckResult]: Loop: 129#L12 assume main_~i~0#1 < 0; 124#L13 assume !(main_~i~0#1 <= -2147483648);main_~i~0#1 := -1 * main_~i~0#1; 119#L18-2 assume !!(0 != main_~i~0#1); 133#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 129#L12 [2023-02-14 14:43:24,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2023-02-14 14:43:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938718452] [2023-02-14 14:43:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1451465, now seen corresponding path program 1 times [2023-02-14 14:43:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033961336] [2023-02-14 14:43:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:43:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:43:24,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:43:24,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033961336] [2023-02-14 14:43:24,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033961336] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:43:24,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:43:24,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:43:24,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579360140] [2023-02-14 14:43:24,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:43:24,259 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-14 14:43:24,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:43:24,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:43:24,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:43:24,260 INFO L87 Difference]: Start difference. First operand 16 states and 23 transitions. cyclomatic complexity: 9 Second operand has 4 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) [2023-02-14 14:43:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:43:24,281 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2023-02-14 14:43:24,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2023-02-14 14:43:24,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-02-14 14:43:24,282 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 27 transitions. [2023-02-14 14:43:24,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-02-14 14:43:24,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-02-14 14:43:24,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2023-02-14 14:43:24,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:43:24,283 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-02-14 14:43:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2023-02-14 14:43:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-02-14 14:43:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2023-02-14 14:43:24,285 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-02-14 14:43:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 14:43:24,286 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-02-14 14:43:24,286 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-14 14:43:24,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2023-02-14 14:43:24,287 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-02-14 14:43:24,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:43:24,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:43:24,288 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-14 14:43:24,288 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2023-02-14 14:43:24,288 INFO L748 eck$LassoCheckResult]: Stem: 173#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 174#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 175#L18-2 assume !!(0 != main_~i~0#1); 170#L10 [2023-02-14 14:43:24,288 INFO L750 eck$LassoCheckResult]: Loop: 170#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 172#L12 assume !(main_~i~0#1 < 0); 169#L18-2 assume !!(0 != main_~i~0#1); 176#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 163#L18 assume main_~i~0#1 > 0;main_~i~0#1 := -1 * main_~i~0#1; 165#L18-2 assume !!(0 != main_~i~0#1); 170#L10 [2023-02-14 14:43:24,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,289 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-14 14:43:24,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323540585] [2023-02-14 14:43:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:24,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830888, now seen corresponding path program 1 times [2023-02-14 14:43:24,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413701974] [2023-02-14 14:43:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:43:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:43:24,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:43:24,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413701974] [2023-02-14 14:43:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413701974] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:43:24,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:43:24,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:43:24,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69767679] [2023-02-14 14:43:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:43:24,343 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-14 14:43:24,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:43:24,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:43:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:43:24,344 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2023-02-14 14:43:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:43:24,371 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-02-14 14:43:24,373 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2023-02-14 14:43:24,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-02-14 14:43:24,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2023-02-14 14:43:24,377 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-02-14 14:43:24,377 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-02-14 14:43:24,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2023-02-14 14:43:24,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:43:24,377 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-02-14 14:43:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2023-02-14 14:43:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2023-02-14 14:43:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:43:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-02-14 14:43:24,380 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-02-14 14:43:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 14:43:24,383 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-02-14 14:43:24,383 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-14 14:43:24,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2023-02-14 14:43:24,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-02-14 14:43:24,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:43:24,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:43:24,384 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-14 14:43:24,384 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2023-02-14 14:43:24,384 INFO L748 eck$LassoCheckResult]: Stem: 218#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 220#L18-2 assume !!(0 != main_~i~0#1); 216#L10 [2023-02-14 14:43:24,384 INFO L750 eck$LassoCheckResult]: Loop: 216#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 221#L12 assume !(main_~i~0#1 < 0); 222#L18-2 assume !!(0 != main_~i~0#1); 217#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 212#L18 assume !(main_~i~0#1 > 0); 213#L18-2 assume !!(0 != main_~i~0#1); 216#L10 [2023-02-14 14:43:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2023-02-14 14:43:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864956417] [2023-02-14 14:43:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830950, now seen corresponding path program 1 times [2023-02-14 14:43:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120836360] [2023-02-14 14:43:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,394 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:43:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 590073037, now seen corresponding path program 1 times [2023-02-14 14:43:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:43:24,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142963882] [2023-02-14 14:43:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:43:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:43:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:43:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:43:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:43:24,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.02 02:43:24 BoogieIcfgContainer [2023-02-14 14:43:24,499 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-14 14:43:24,499 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 14:43:24,499 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 14:43:24,499 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 14:43:24,500 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:43:22" (3/4) ... [2023-02-14 14:43:24,502 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-14 14:43:24,525 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 14:43:24,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 14:43:24,526 INFO L158 Benchmark]: Toolchain (without parser) took 1978.66ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 107.7MB in the beginning and 115.6MB in the end (delta: -7.8MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2023-02-14 14:43:24,527 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:43:24,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.18ms. Allocated memory is still 153.1MB. Free memory was 107.7MB in the beginning and 98.7MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 14:43:24,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.79ms. Allocated memory is still 153.1MB. Free memory was 98.7MB in the beginning and 97.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:43:24,528 INFO L158 Benchmark]: Boogie Preprocessor took 13.72ms. Allocated memory is still 153.1MB. Free memory was 97.4MB in the beginning and 96.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:43:24,528 INFO L158 Benchmark]: RCFGBuilder took 222.36ms. Allocated memory is still 153.1MB. Free memory was 96.2MB in the beginning and 87.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 14:43:24,528 INFO L158 Benchmark]: BuchiAutomizer took 1505.40ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 87.4MB in the beginning and 116.6MB in the end (delta: -29.2MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. [2023-02-14 14:43:24,529 INFO L158 Benchmark]: Witness Printer took 26.39ms. Allocated memory is still 207.6MB. Free memory was 116.6MB in the beginning and 115.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:43:24,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.18ms. Allocated memory is still 153.1MB. Free memory was 107.7MB in the beginning and 98.7MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.79ms. Allocated memory is still 153.1MB. Free memory was 98.7MB in the beginning and 97.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.72ms. Allocated memory is still 153.1MB. Free memory was 97.4MB in the beginning and 96.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 222.36ms. Allocated memory is still 153.1MB. Free memory was 96.2MB in the beginning and 87.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1505.40ms. Allocated memory was 153.1MB in the beginning and 207.6MB in the end (delta: 54.5MB). Free memory was 87.4MB in the beginning and 116.6MB in the end (delta: -29.2MB). Peak memory consumption was 26.7MB. Max. memory is 16.1GB. * Witness Printer took 26.39ms. Allocated memory is still 207.6MB. Free memory was 116.6MB in the beginning and 115.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 31 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf96 smp71 dnf100 smp100 tf110 neg90 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-14 14:43:24,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-14 14:43:24,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)