./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/invert_string-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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/loops/invert_string-3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 15:06:22,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 15:06:22,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 15:06:22,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 15:06:22,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 15:06:22,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 15:06:22,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 15:06:22,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 15:06:22,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 15:06:22,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 15:06:22,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 15:06:22,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 15:06:22,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 15:06:22,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 15:06:22,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 15:06:22,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 15:06:22,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 15:06:22,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 15:06:22,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 15:06:22,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 15:06:22,739 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 15:06:22,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 15:06:22,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 15:06:22,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 15:06:22,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 15:06:22,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 15:06:22,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 15:06:22,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 15:06:22,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 15:06:22,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 15:06:22,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 15:06:22,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 15:06:22,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 15:06:22,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 15:06:22,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 15:06:22,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 15:06:22,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 15:06:22,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 15:06:22,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 15:06:22,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 15:06:22,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 15:06:22,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 15:06:22,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 15:06:22,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 15:06:22,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 15:06:22,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 15:06:22,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 15:06:22,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 15:06:22,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 15:06:22,797 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 15:06:22,797 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 15:06:22,797 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 15:06:22,798 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 15:06:22,798 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 15:06:22,798 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 15:06:22,798 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 15:06:22,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 15:06:22,799 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 15:06:22,799 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 15:06:22,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 15:06:22,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 15:06:22,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 15:06:22,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 15:06:22,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 15:06:22,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 15:06:22,800 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 15:06:22,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 15:06:22,801 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 15:06:22,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 15:06:22,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 15:06:22,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 15:06:22,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 15:06:22,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 15:06:22,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 15:06:22,803 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 15:06:22,804 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca98535e808a51f7cfa7d21c9d33f259821212a6554e27f29c2bddd9197c0249 [2022-07-23 15:06:23,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 15:06:23,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 15:06:23,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 15:06:23,058 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 15:06:23,058 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 15:06:23,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/invert_string-3.c [2022-07-23 15:06:23,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b26bb5b/1aa41e251704426f8416d8f413768a5e/FLAG28525988b [2022-07-23 15:06:23,582 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 15:06:23,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-3.c [2022-07-23 15:06:23,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b26bb5b/1aa41e251704426f8416d8f413768a5e/FLAG28525988b [2022-07-23 15:06:23,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56b26bb5b/1aa41e251704426f8416d8f413768a5e [2022-07-23 15:06:23,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 15:06:23,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 15:06:23,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 15:06:23,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 15:06:23,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 15:06:23,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bad603e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23, skipping insertion in model container [2022-07-23 15:06:23,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 15:06:23,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 15:06:23,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-3.c[327,340] [2022-07-23 15:06:23,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:06:23,799 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 15:06:23,808 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/invert_string-3.c[327,340] [2022-07-23 15:06:23,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:06:23,825 INFO L208 MainTranslator]: Completed translation [2022-07-23 15:06:23,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23 WrapperNode [2022-07-23 15:06:23,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 15:06:23,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 15:06:23,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 15:06:23,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 15:06:23,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,864 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-07-23 15:06:23,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 15:06:23,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 15:06:23,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 15:06:23,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 15:06:23,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 15:06:23,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 15:06:23,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 15:06:23,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 15:06:23,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (1/1) ... [2022-07-23 15:06:23,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:23,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:23,919 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) [2022-07-23 15:06:23,948 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 [2022-07-23 15:06:23,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 15:06:23,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 15:06:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 15:06:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 15:06:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 15:06:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 15:06:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 15:06:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 15:06:24,027 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 15:06:24,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 15:06:24,162 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 15:06:24,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 15:06:24,167 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-23 15:06:24,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:06:24 BoogieIcfgContainer [2022-07-23 15:06:24,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 15:06:24,170 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 15:06:24,170 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 15:06:24,173 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 15:06:24,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:06:24,174 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 03:06:23" (1/3) ... [2022-07-23 15:06:24,175 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f58db11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:06:24, skipping insertion in model container [2022-07-23 15:06:24,175 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:06:24,175 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:06:23" (2/3) ... [2022-07-23 15:06:24,176 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f58db11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:06:24, skipping insertion in model container [2022-07-23 15:06:24,176 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:06:24,176 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:06:24" (3/3) ... [2022-07-23 15:06:24,177 INFO L354 chiAutomizerObserver]: Analyzing ICFG invert_string-3.c [2022-07-23 15:06:24,223 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 15:06:24,223 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 15:06:24,223 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 15:06:24,223 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 15:06:24,223 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 15:06:24,224 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 15:06:24,224 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 15:06:24,224 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 15:06:24,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.4375) 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) [2022-07-23 15:06:24,242 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-23 15:06:24,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:06:24,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:06:24,248 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:06:24,248 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 15:06:24,248 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 15:06:24,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 16 states have (on average 1.4375) 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) [2022-07-23 15:06:24,250 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-23 15:06:24,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:06:24,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:06:24,251 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:06:24,251 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 15:06:24,257 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 14#L18-3true [2022-07-23 15:06:24,257 INFO L754 eck$LassoCheckResult]: Loop: 14#L18-3true assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 9#L18-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 14#L18-3true [2022-07-23 15:06:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:24,263 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 15:06:24,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314171060] [2022-07-23 15:06:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:24,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:24,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:24,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:24,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2022-07-23 15:06:24,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:24,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901112471] [2022-07-23 15:06:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:24,419 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:24,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-07-23 15:06:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:24,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847331373] [2022-07-23 15:06:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:24,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:24,465 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:24,497 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:24,915 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:06:24,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:06:24,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:06:24,916 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:06:24,916 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 15:06:24,916 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:24,916 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:06:24,916 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:06:24,916 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-3.c_Iteration1_Lasso [2022-07-23 15:06:24,916 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:06:24,916 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:06:24,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:24,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:25,615 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:06:25,619 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 15:06:25,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,623 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) [2022-07-23 15:06:25,627 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 [2022-07-23 15:06:25,628 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 [2022-07-23 15:06:25,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:25,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:25,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:25,668 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-23 15:06:25,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,691 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) [2022-07-23 15:06:25,692 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 [2022-07-23 15:06:25,694 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 [2022-07-23 15:06:25,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:25,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:25,706 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:25,710 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-07-23 15:06:25,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,728 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) [2022-07-23 15:06:25,729 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 [2022-07-23 15:06:25,730 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 [2022-07-23 15:06:25,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:25,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:25,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:25,739 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,758 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 [2022-07-23 15:06:25,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,760 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) [2022-07-23 15:06:25,761 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 [2022-07-23 15:06:25,762 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 [2022-07-23 15:06:25,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:25,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:25,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:25,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-23 15:06:25,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,799 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) [2022-07-23 15:06:25,800 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 [2022-07-23 15:06:25,801 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 [2022-07-23 15:06:25,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,810 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 15:06:25,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 15:06:25,835 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,854 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 [2022-07-23 15:06:25,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,856 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) [2022-07-23 15:06:25,859 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 [2022-07-23 15:06:25,860 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 [2022-07-23 15:06:25,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,869 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 15:06:25,869 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 15:06:25,885 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 15:06:25,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,910 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) [2022-07-23 15:06:25,910 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 [2022-07-23 15:06:25,912 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 [2022-07-23 15:06:25,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:25,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,919 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:25,919 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:25,920 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,938 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 [2022-07-23 15:06:25,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,939 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) [2022-07-23 15:06:25,940 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 [2022-07-23 15:06:25,941 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 [2022-07-23 15:06:25,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:25,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:25,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:25,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,966 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 [2022-07-23 15:06:25,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,968 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) [2022-07-23 15:06:25,968 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 [2022-07-23 15:06:25,969 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 [2022-07-23 15:06:25,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:25,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:25,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:25,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:25,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:25,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:25,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:25,978 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:25,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-23 15:06:25,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:25,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:25,995 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) [2022-07-23 15:06:25,997 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 [2022-07-23 15:06:25,998 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 [2022-07-23 15:06:26,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:26,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:26,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:26,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:26,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:26,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:26,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:26,009 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:26,027 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 [2022-07-23 15:06:26,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:26,029 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) [2022-07-23 15:06:26,033 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 [2022-07-23 15:06:26,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:06:26,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:26,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:26,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:26,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:26,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:26,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:26,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:26,052 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:26,070 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 [2022-07-23 15:06:26,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:26,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:26,071 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) [2022-07-23 15:06:26,072 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 [2022-07-23 15:06:26,073 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 [2022-07-23 15:06:26,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:26,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:26,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:26,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:26,082 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 15:06:26,082 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 15:06:26,088 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:26,104 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 [2022-07-23 15:06:26,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:26,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:26,107 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) [2022-07-23 15:06:26,112 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 [2022-07-23 15:06:26,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:26,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:06:26,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:26,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:26,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:26,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:06:26,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:06:26,122 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 [2022-07-23 15:06:26,131 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:26,158 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 [2022-07-23 15:06:26,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:26,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:26,160 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) [2022-07-23 15:06:26,163 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 [2022-07-23 15:06:26,164 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 [2022-07-23 15:06:26,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:26,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:26,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:26,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:26,176 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 15:06:26,176 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 15:06:26,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:26,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 15:06:26,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:26,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:26,219 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) [2022-07-23 15:06:26,220 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 [2022-07-23 15:06:26,221 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 [2022-07-23 15:06:26,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:26,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:26,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:26,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:26,239 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 15:06:26,239 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 15:06:26,251 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:06:26,279 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 [2022-07-23 15:06:26,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:26,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:26,281 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:06:26,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-23 15:06:26,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:06:26,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:06:26,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:06:26,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:06:26,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:06:26,303 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 15:06:26,304 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 15:06:26,323 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 15:06:26,379 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2022-07-23 15:06:26,379 INFO L444 ModelExtractionUtils]: 2 out of 19 variables were initially zero. Simplification set additionally 13 variables to zero. [2022-07-23 15:06:26,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:26,382 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:06:26,398 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 15:06:26,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-23 15:06:26,437 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-07-23 15:06:26,437 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 15:06:26,437 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#str1~0#1.base)_1, ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~#str1~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_~#str1~0#1.base)_1 - 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~#str1~0#1.offset Supporting invariants [] [2022-07-23 15:06:26,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-23 15:06:26,515 INFO L293 tatePredicateManager]: 10 out of 10 supporting invariants were superfluous and have been removed [2022-07-23 15:06:26,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:06:26,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 15:06:26,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:06:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:06:26,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 15:06:26,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:06:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:26,607 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 [2022-07-23 15:06:26,608 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.4375) 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) 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) [2022-07-23 15:06:26,645 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 16 states have (on average 1.4375) 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). 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 33 states and 47 transitions. Complement of second has 8 states. [2022-07-23 15:06:26,646 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 [2022-07-23 15:06:26,651 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) [2022-07-23 15:06:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2022-07-23 15:06:26,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-23 15:06:26,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:06:26,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-23 15:06:26,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:06:26,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-23 15:06:26,654 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:06:26,655 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 47 transitions. [2022-07-23 15:06:26,658 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-07-23 15:06:26,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 14 states and 19 transitions. [2022-07-23 15:06:26,662 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-23 15:06:26,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-07-23 15:06:26,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2022-07-23 15:06:26,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:06:26,663 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-07-23 15:06:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2022-07-23 15:06:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-23 15:06:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 15:06:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2022-07-23 15:06:26,685 INFO L392 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-07-23 15:06:26,685 INFO L374 stractBuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-07-23 15:06:26,686 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 15:06:26,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2022-07-23 15:06:26,686 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2022-07-23 15:06:26,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:06:26,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:06:26,687 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 15:06:26,687 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 15:06:26,687 INFO L752 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 131#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 134#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 143#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 142#L26-3 [2022-07-23 15:06:26,688 INFO L754 eck$LassoCheckResult]: Loop: 142#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 141#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 142#L26-3 [2022-07-23 15:06:26,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2022-07-23 15:06:26,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:26,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521184825] [2022-07-23 15:06:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:26,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:06:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:06:26,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521184825] [2022-07-23 15:06:26,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521184825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 15:06:26,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 15:06:26,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 15:06:26,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591244603] [2022-07-23 15:06:26,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 15:06:26,845 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:06:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:26,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 1 times [2022-07-23 15:06:26,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:26,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258494038] [2022-07-23 15:06:26,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:26,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:26,854 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:26,860 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:26,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:06:26,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 15:06:26,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 15:06:26,953 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. cyclomatic complexity: 8 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) [2022-07-23 15:06:26,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-23 15:06:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:06:26,989 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-07-23 15:06:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 15:06:26,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2022-07-23 15:06:26,991 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-23 15:06:26,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 14 states and 16 transitions. [2022-07-23 15:06:26,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-23 15:06:26,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-23 15:06:26,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2022-07-23 15:06:26,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:06:26,992 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-23 15:06:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2022-07-23 15:06:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-07-23 15:06:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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) [2022-07-23 15:06:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-23 15:06:26,994 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-23 15:06:26,994 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-23 15:06:26,994 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 15:06:26,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 15 transitions. [2022-07-23 15:06:26,995 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-23 15:06:26,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:06:26,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:06:26,996 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-07-23 15:06:26,996 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 15:06:26,996 INFO L752 eck$LassoCheckResult]: Stem: 168#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 169#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 176#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 171#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 172#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 177#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 175#L26-3 [2022-07-23 15:06:26,996 INFO L754 eck$LassoCheckResult]: Loop: 175#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 174#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 175#L26-3 [2022-07-23 15:06:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 889660429, now seen corresponding path program 1 times [2022-07-23 15:06:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:26,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156949316] [2022-07-23 15:06:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:06:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:27,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:06:27,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156949316] [2022-07-23 15:06:27,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156949316] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:06:27,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469372680] [2022-07-23 15:06:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:27,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:06:27,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:27,084 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:06:27,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-23 15:06:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:06:27,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 15:06:27,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:06:27,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 15:06:27,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-07-23 15:06:27,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-23 15:06:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:27,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:06:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:27,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469372680] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:06:27,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:06:27,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-07-23 15:06:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385318544] [2022-07-23 15:06:27,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:06:27,527 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:06:27,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 2 times [2022-07-23 15:06:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:27,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764034158] [2022-07-23 15:06:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:27,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:27,533 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:27,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:27,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:06:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 15:06:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-23 15:06:27,610 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. cyclomatic complexity: 5 Second operand has 9 states, 9 states have (on average 1.6666666666666667) 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) [2022-07-23 15:06:27,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:06:27,744 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-07-23 15:06:27,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 15:06:27,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2022-07-23 15:06:27,746 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-23 15:06:27,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 21 transitions. [2022-07-23 15:06:27,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-23 15:06:27,747 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-23 15:06:27,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2022-07-23 15:06:27,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:06:27,747 INFO L369 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-23 15:06:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2022-07-23 15:06:27,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-23 15:06:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 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) [2022-07-23 15:06:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-07-23 15:06:27,749 INFO L392 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-23 15:06:27,749 INFO L374 stractBuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-07-23 15:06:27,749 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 15:06:27,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2022-07-23 15:06:27,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-23 15:06:27,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:06:27,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:06:27,750 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1] [2022-07-23 15:06:27,750 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 15:06:27,751 INFO L752 eck$LassoCheckResult]: Stem: 245#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 246#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 253#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 247#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 248#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 254#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 260#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 259#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 258#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 257#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 256#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 255#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 252#L26-3 [2022-07-23 15:06:27,751 INFO L754 eck$LassoCheckResult]: Loop: 252#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 251#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 252#L26-3 [2022-07-23 15:06:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 833936659, now seen corresponding path program 2 times [2022-07-23 15:06:27,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566934260] [2022-07-23 15:06:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:27,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:06:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:28,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:06:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566934260] [2022-07-23 15:06:28,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566934260] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:06:28,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697520083] [2022-07-23 15:06:28,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 15:06:28,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:06:28,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:06:28,277 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:06:28,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-23 15:06:28,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 15:06:28,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 15:06:28,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-23 15:06:28,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:06:28,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 15:06:28,402 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 15:06:28,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-07-23 15:06:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:28,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:06:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:06:29,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697520083] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:06:29,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:06:29,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2022-07-23 15:06:29,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390174709] [2022-07-23 15:06:29,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:06:29,126 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:06:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:29,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 3 times [2022-07-23 15:06:29,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:29,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650726866] [2022-07-23 15:06:29,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:29,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,132 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:06:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-23 15:06:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-07-23 15:06:29,193 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. cyclomatic complexity: 5 Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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) [2022-07-23 15:06:29,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:06:29,404 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-23 15:06:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 15:06:29,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 24 transitions. [2022-07-23 15:06:29,406 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-23 15:06:29,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 24 transitions. [2022-07-23 15:06:29,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-07-23 15:06:29,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-23 15:06:29,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 24 transitions. [2022-07-23 15:06:29,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:06:29,407 INFO L369 hiAutomatonCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-07-23 15:06:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 24 transitions. [2022-07-23 15:06:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-07-23 15:06:29,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 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) [2022-07-23 15:06:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-07-23 15:06:29,409 INFO L392 hiAutomatonCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-07-23 15:06:29,409 INFO L374 stractBuchiCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-07-23 15:06:29,409 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 15:06:29,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 23 transitions. [2022-07-23 15:06:29,410 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-23 15:06:29,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:06:29,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:06:29,410 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 1, 1, 1, 1] [2022-07-23 15:06:29,410 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 15:06:29,410 INFO L752 eck$LassoCheckResult]: Stem: 374#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 375#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~post4#1, main_#t~mem7#1, main_#t~post8#1, main_#t~post6#1, main_#t~mem10#1, main_#t~mem11#1, main_#t~post12#1, main_#t~post9#1, main_~max~0#1, main_~#str1~0#1.base, main_~#str1~0#1.offset, main_~#str2~0#1.base, main_~#str2~0#1.offset, main_~i~0#1, main_~j~0#1;main_~max~0#1 := 5;call main_~#str1~0#1.base, main_~#str1~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));call main_~#str2~0#1.base, main_~#str2~0#1.offset := #Ultimate.allocOnStack((if main_~max~0#1 % 4294967296 % 4294967296 <= 2147483647 then main_~max~0#1 % 4294967296 % 4294967296 else main_~max~0#1 % 4294967296 % 4294967296 - 4294967296));havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := 0; 382#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 383#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 384#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 376#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 377#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 391#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 390#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 389#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 388#L18-3 assume !!(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296);call write~int(main_#t~nondet5#1, main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet5#1; 387#L18-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 386#L18-3 assume !(main_~i~0#1 % 4294967296 < main_~max~0#1 % 4294967296); 385#L18-4 call write~int(0, main_~#str1~0#1.base, main_~#str1~0#1.offset + (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296), 1);main_~j~0#1 := 0;main_~i~0#1 := (if (main_~max~0#1 - 1) % 4294967296 % 4294967296 <= 2147483647 then (main_~max~0#1 - 1) % 4294967296 % 4294967296 else (main_~max~0#1 - 1) % 4294967296 % 4294967296 - 4294967296); 381#L26-3 [2022-07-23 15:06:29,411 INFO L754 eck$LassoCheckResult]: Loop: 381#L26-3 assume !!(main_~i~0#1 >= 0);call main_#t~mem7#1 := read~int(main_~#str1~0#1.base, main_~#str1~0#1.offset + main_~i~0#1, 1);call write~int(main_#t~mem7#1, main_~#str2~0#1.base, main_~#str2~0#1.offset + main_~j~0#1, 1);havoc main_#t~mem7#1;main_#t~post8#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post8#1;havoc main_#t~post8#1; 380#L26-2 main_#t~post6#1 := main_~i~0#1;main_~i~0#1 := main_#t~post6#1 - 1;havoc main_#t~post6#1; 381#L26-3 [2022-07-23 15:06:29,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:29,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1745699051, now seen corresponding path program 3 times [2022-07-23 15:06:29,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:29,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656054644] [2022-07-23 15:06:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:29,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,432 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1731, now seen corresponding path program 4 times [2022-07-23 15:06:29,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:29,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513336731] [2022-07-23 15:06:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:29,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,454 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:29,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:06:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1715425495, now seen corresponding path program 1 times [2022-07-23 15:06:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:06:29,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983416482] [2022-07-23 15:06:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:06:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:06:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,480 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:06:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:06:29,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:06:32,236 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:06:32,236 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:06:32,236 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:06:32,236 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:06:32,236 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 15:06:32,236 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:06:32,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:06:32,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:06:32,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: invert_string-3.c_Iteration5_Lasso [2022-07-23 15:06:32,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:06:32,237 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:06:32,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:32,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:32,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:32,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:32,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:06:32,759 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.IllegalArgumentException at de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) at java.base/java.util.AbstractMap.putAll(AbstractMap.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.PureSubstitution.(PureSubstitution.java:81) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.(Substitution.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.Substitution.apply(Substitution.java:59) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.replaceMapReads(MapEliminator.java:518) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.mapelimination.MapEliminator.getRewrittenTransFormula(MapEliminator.java:342) at de.uni_freiburg.informatik.ultimate.lassoranker.preprocessors.MapEliminationLassoPreprocessor.process(MapEliminationLassoPreprocessor.java:111) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.applyPreprocessor(LassoBuilder.java:154) at de.uni_freiburg.informatik.ultimate.lassoranker.variables.LassoBuilder.preprocess(LassoBuilder.java:262) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.preprocess(LassoAnalysis.java:280) at de.uni_freiburg.informatik.ultimate.lassoranker.LassoAnalysis.(LassoAnalysis.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:601) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLassoTermination(LassoCheck.java:914) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:823) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.cegar.AbstractBuchiCegarLoop.runCegarLoop(AbstractBuchiCegarLoop.java:310) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:363) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-23 15:06:32,762 INFO L158 Benchmark]: Toolchain (without parser) took 9146.50ms. Allocated memory was 90.2MB in the beginning and 146.8MB in the end (delta: 56.6MB). Free memory was 57.6MB in the beginning and 39.0MB in the end (delta: 18.6MB). Peak memory consumption was 78.3MB. Max. memory is 16.1GB. [2022-07-23 15:06:32,762 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:06:32,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.70ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 57.4MB in the beginning and 97.3MB in the end (delta: -40.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 15:06:32,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 121.6MB. Free memory was 97.3MB in the beginning and 95.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:06:32,763 INFO L158 Benchmark]: Boogie Preprocessor took 20.51ms. Allocated memory is still 121.6MB. Free memory was 95.6MB in the beginning and 94.7MB in the end (delta: 927.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:06:32,763 INFO L158 Benchmark]: RCFGBuilder took 283.04ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 83.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 15:06:32,764 INFO L158 Benchmark]: BuchiAutomizer took 8591.08ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 83.0MB in the beginning and 39.0MB in the end (delta: 44.0MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. [2022-07-23 15:06:32,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.70ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 57.4MB in the beginning and 97.3MB in the end (delta: -40.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 121.6MB. Free memory was 97.3MB in the beginning and 95.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.51ms. Allocated memory is still 121.6MB. Free memory was 95.6MB in the beginning and 94.7MB in the end (delta: 927.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.04ms. Allocated memory is still 121.6MB. Free memory was 94.7MB in the beginning and 83.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 8591.08ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 83.0MB in the beginning and 39.0MB in the end (delta: 44.0MB). Peak memory consumption was 75.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: IllegalArgumentException: null de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: IllegalArgumentException: null: de.uni_freiburg.informatik.ultimate.util.datastructures.ScopedHashMap.put(ScopedHashMap.java:331) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-23 15:06:32,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-23 15:06:33,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-23 15:06:33,196 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 Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalArgumentException: null