./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-memory-alloca/KroeningSharyginaTsitovichWintersteiger-2010CAV-Fig1-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-memory-alloca/KroeningSharyginaTsitovichWintersteiger-2010CAV-Fig1-alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b9049196bba7cbcb7cf3ded9c8379f49dc6ac79e222934a18b33266f1e0c667f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:01:28,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:01:28,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:01:28,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:01:28,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:01:28,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:01:28,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:01:28,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:01:28,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:01:28,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:01:28,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:01:28,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:01:28,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:01:28,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:01:28,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:01:28,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:01:28,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:01:28,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:01:28,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:01:28,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:01:28,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:01:28,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:01:28,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:01:28,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:01:28,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:01:28,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:01:28,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:01:28,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:01:28,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:01:28,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:01:28,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:01:28,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:01:28,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:01:28,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:01:28,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:01:28,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:01:28,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:01:28,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:01:28,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:01:28,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:01:28,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:01:28,807 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-15 17:01:28,833 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:01:28,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:01:28,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:01:28,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:01:28,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:01:28,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:01:28,836 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:01:28,836 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:01:28,836 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:01:28,836 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:01:28,837 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:01:28,837 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:01:28,837 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:01:28,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:01:28,837 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:01:28,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:01:28,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:01:28,838 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:01:28,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:01:28,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:01:28,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:01:28,838 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:01:28,839 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:01:28,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:01:28,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:01:28,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:01:28,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:01:28,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:01:28,840 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:01:28,840 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:01:28,841 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9049196bba7cbcb7cf3ded9c8379f49dc6ac79e222934a18b33266f1e0c667f [2021-12-15 17:01:29,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:01:29,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:01:29,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:01:29,070 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:01:29,070 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:01:29,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/KroeningSharyginaTsitovichWintersteiger-2010CAV-Fig1-alloca.i [2021-12-15 17:01:29,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1547660be/74172012993b44aa971f1d2bd37dba3c/FLAGddfac1db9 [2021-12-15 17:01:29,493 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:01:29,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/KroeningSharyginaTsitovichWintersteiger-2010CAV-Fig1-alloca.i [2021-12-15 17:01:29,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1547660be/74172012993b44aa971f1d2bd37dba3c/FLAGddfac1db9 [2021-12-15 17:01:29,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1547660be/74172012993b44aa971f1d2bd37dba3c [2021-12-15 17:01:29,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:01:29,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:01:29,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:01:29,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:01:29,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:01:29,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1997536b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29, skipping insertion in model container [2021-12-15 17:01:29,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:01:29,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:01:29,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:01:29,811 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:01:29,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:01:29,868 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:01:29,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29 WrapperNode [2021-12-15 17:01:29,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:01:29,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:01:29,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:01:29,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:01:29,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,909 INFO L137 Inliner]: procedures = 110, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2021-12-15 17:01:29,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:01:29,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:01:29,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:01:29,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:01:29,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:01:29,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:01:29,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:01:29,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:01:29,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (1/1) ... [2021-12-15 17:01:29,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:29,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:29,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:30,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-15 17:01:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 17:01:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 17:01:30,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 17:01:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 17:01:30,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:01:30,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:01:30,095 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:01:30,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:01:30,176 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:01:30,180 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:01:30,180 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 17:01:30,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:01:30 BoogieIcfgContainer [2021-12-15 17:01:30,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:01:30,182 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:01:30,182 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:01:30,185 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:01:30,185 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:01:30,185 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:01:29" (1/3) ... [2021-12-15 17:01:30,186 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7fc5596e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:01:30, skipping insertion in model container [2021-12-15 17:01:30,186 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:01:30,186 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:01:29" (2/3) ... [2021-12-15 17:01:30,187 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7fc5596e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:01:30, skipping insertion in model container [2021-12-15 17:01:30,187 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:01:30,187 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:01:30" (3/3) ... [2021-12-15 17:01:30,188 INFO L388 chiAutomizerObserver]: Analyzing ICFG KroeningSharyginaTsitovichWintersteiger-2010CAV-Fig1-alloca.i [2021-12-15 17:01:30,214 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:01:30,215 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:01:30,215 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:01:30,215 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:01:30,215 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:01:30,215 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:01:30,215 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:01:30,215 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:01:30,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:30,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:30,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:01:30,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:01:30,239 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 17:01:30,239 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-15 17:01:30,240 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:01:30,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:30,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:30,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:01:30,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:01:30,241 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 17:01:30,241 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-15 17:01:30,246 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~post8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem5#1, main_~x~0#1.base, main_~x~0#1.offset, main_~debug~0#1.base, main_~debug~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x~0#1.base, main_~x~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~debug~0#1.base, main_~debug~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(0, main_~debug~0#1.base, main_~debug~0#1.offset, 4); 9#L558-2true [2021-12-15 17:01:30,246 INFO L793 eck$LassoCheckResult]: Loop: 9#L558-2true call main_#t~mem5#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 12#L552-1true assume !!(main_#t~mem5#1 < 255);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 4#L553true assume !(0 != (if main_#t~mem6#1 < 0 && 0 != main_#t~mem6#1 % 2 then main_#t~mem6#1 % 2 - 2 else main_#t~mem6#1 % 2));havoc main_#t~mem6#1;call main_#t~mem9#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4);call write~int(2 + main_#t~mem9#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~mem9#1; 8#L553-2true call main_#t~mem10#1 := read~int(main_~debug~0#1.base, main_~debug~0#1.offset, 4); 7#L558true assume 0 != main_#t~mem10#1;havoc main_#t~mem10#1;call write~int(0, main_~x~0#1.base, main_~x~0#1.offset, 4); 9#L558-2true [2021-12-15 17:01:30,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:30,250 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-15 17:01:30,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291301009] [2021-12-15 17:01:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:30,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,375 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:30,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash 35468238, now seen corresponding path program 1 times [2021-12-15 17:01:30,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:30,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482710800] [2021-12-15 17:01:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:30,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,420 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,433 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:30,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907724, now seen corresponding path program 1 times [2021-12-15 17:01:30,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:30,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835413949] [2021-12-15 17:01:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:30,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:01:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:01:30,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:01:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835413949] [2021-12-15 17:01:30,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835413949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:01:30,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:01:30,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:01:30,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685836116] [2021-12-15 17:01:30,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:01:30,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:01:30,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 17:01:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 17:01:30,772 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:01:30,796 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-12-15 17:01:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 17:01:30,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2021-12-15 17:01:30,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:30,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2021-12-15 17:01:30,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-15 17:01:30,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-15 17:01:30,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-12-15 17:01:30,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:01:30,804 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-15 17:01:30,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-12-15 17:01:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-15 17:01:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-12-15 17:01:30,820 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-15 17:01:30,821 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-15 17:01:30,821 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:01:30,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-12-15 17:01:30,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:30,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:01:30,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:01:30,822 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-15 17:01:30,822 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-15 17:01:30,822 INFO L791 eck$LassoCheckResult]: Stem: 38#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 39#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~post8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem5#1, main_~x~0#1.base, main_~x~0#1.offset, main_~debug~0#1.base, main_~debug~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x~0#1.base, main_~x~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~debug~0#1.base, main_~debug~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(0, main_~debug~0#1.base, main_~debug~0#1.offset, 4); 41#L558-2 [2021-12-15 17:01:30,822 INFO L793 eck$LassoCheckResult]: Loop: 41#L558-2 call main_#t~mem5#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 42#L552-1 assume !!(main_#t~mem5#1 < 255);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 36#L553 assume !(0 != (if main_#t~mem6#1 < 0 && 0 != main_#t~mem6#1 % 2 then main_#t~mem6#1 % 2 - 2 else main_#t~mem6#1 % 2));havoc main_#t~mem6#1;call main_#t~mem9#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4);call write~int(2 + main_#t~mem9#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~mem9#1; 37#L553-2 call main_#t~mem10#1 := read~int(main_~debug~0#1.base, main_~debug~0#1.offset, 4); 40#L558 assume !(0 != main_#t~mem10#1);havoc main_#t~mem10#1; 41#L558-2 [2021-12-15 17:01:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-15 17:01:30,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:30,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126669655] [2021-12-15 17:01:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:30,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,836 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,845 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash 35468240, now seen corresponding path program 1 times [2021-12-15 17:01:30,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:30,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375598227] [2021-12-15 17:01:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:30,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,854 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,861 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907726, now seen corresponding path program 1 times [2021-12-15 17:01:30,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:30,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924091158] [2021-12-15 17:01:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:30,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,890 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:30,904 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:31,271 INFO L210 LassoAnalysis]: Preferences: [2021-12-15 17:01:31,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-15 17:01:31,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-15 17:01:31,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-15 17:01:31,272 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-15 17:01:31,272 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:31,272 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-15 17:01:31,272 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-15 17:01:31,272 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-2010CAV-Fig1-alloca.i_Iteration2_Lasso [2021-12-15 17:01:31,272 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-15 17:01:31,273 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-15 17:01:31,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:31,750 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-15 17:01:31,753 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-15 17:01:31,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:31,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:31,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:31,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-15 17:01:31,762 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 [2021-12-15 17:01:31,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:31,770 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-15 17:01:31,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:31,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:31,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:31,772 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-15 17:01:31,772 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-15 17:01:31,788 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:31,804 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 [2021-12-15 17:01:31,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:31,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:31,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:31,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-15 17:01:31,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:31,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:31,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-15 17:01:31,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:31,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:31,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:31,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-15 17:01:31,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-15 17:01:31,817 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:31,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:31,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:31,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:31,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:31,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-15 17:01:31,848 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:31,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:31,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:31,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:31,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:31,856 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:31,856 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:31,871 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:31,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:31,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:31,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:31,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:31,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-15 17:01:31,903 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:31,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:31,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:31,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:31,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:31,911 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:31,911 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:31,915 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:31,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:31,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:31,936 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:31,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-15 17:01:31,937 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:31,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:31,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:31,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:31,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:31,945 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:31,946 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:31,967 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:31,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:31,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:31,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:31,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:31,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-15 17:01:31,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:31,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:31,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:31,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:31,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:31,997 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:31,997 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:32,011 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-15 17:01:32,024 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-15 17:01:32,024 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-12-15 17:01:32,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:32,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:32,027 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:32,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-15 17:01:32,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-15 17:01:32,056 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-15 17:01:32,056 INFO L513 LassoAnalysis]: Proved termination. [2021-12-15 17:01:32,057 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~x~0#1.base) ULTIMATE.start_main_~x~0#1.offset)_1) = -1*v_rep(select (select #memory_int ULTIMATE.start_main_~x~0#1.base) ULTIMATE.start_main_~x~0#1.offset)_1 + 255 Supporting invariants [] [2021-12-15 17:01:32,086 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 [2021-12-15 17:01:32,116 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2021-12-15 17:01:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:01:32,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 17:01:32,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 17:01:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:01:32,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 17:01:32,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 17:01:32,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 37 treesize of output 21 [2021-12-15 17:01:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:01:32,266 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-15 17:01:32,267 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:32,295 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 21 transitions. Complement of second has 9 states. [2021-12-15 17:01:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-15 17:01:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2021-12-15 17:01:32,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-15 17:01:32,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-15 17:01:32,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 7 letters. Loop has 5 letters. [2021-12-15 17:01:32,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-15 17:01:32,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 2 letters. Loop has 10 letters. [2021-12-15 17:01:32,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-15 17:01:32,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 21 transitions. [2021-12-15 17:01:32,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:32,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 21 transitions. [2021-12-15 17:01:32,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-12-15 17:01:32,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-15 17:01:32,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2021-12-15 17:01:32,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-15 17:01:32,300 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-15 17:01:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2021-12-15 17:01:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-12-15 17:01:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-12-15 17:01:32,301 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-15 17:01:32,302 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-15 17:01:32,302 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:01:32,302 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2021-12-15 17:01:32,302 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:32,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:01:32,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:01:32,302 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-15 17:01:32,302 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-15 17:01:32,303 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 160#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~post8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem5#1, main_~x~0#1.base, main_~x~0#1.offset, main_~debug~0#1.base, main_~debug~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x~0#1.base, main_~x~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~debug~0#1.base, main_~debug~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(0, main_~debug~0#1.base, main_~debug~0#1.offset, 4); 169#L558-2 call main_#t~mem5#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 167#L552-1 assume !!(main_#t~mem5#1 < 255);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 155#L553 assume 0 != (if main_#t~mem6#1 < 0 && 0 != main_#t~mem6#1 % 2 then main_#t~mem6#1 % 2 - 2 else main_#t~mem6#1 % 2);havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4);main_#t~post8#1 := main_#t~mem7#1;call write~int(main_#t~post8#1 - 1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~mem7#1;havoc main_#t~post8#1; 156#L553-2 [2021-12-15 17:01:32,303 INFO L793 eck$LassoCheckResult]: Loop: 156#L553-2 call main_#t~mem10#1 := read~int(main_~debug~0#1.base, main_~debug~0#1.offset, 4); 161#L558 assume !(0 != main_#t~mem10#1);havoc main_#t~mem10#1; 162#L558-2 call main_#t~mem5#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 170#L552-1 assume !!(main_#t~mem5#1 < 255);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 171#L553 assume !(0 != (if main_#t~mem6#1 < 0 && 0 != main_#t~mem6#1 % 2 then main_#t~mem6#1 % 2 - 2 else main_#t~mem6#1 % 2));havoc main_#t~mem6#1;call main_#t~mem9#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4);call write~int(2 + main_#t~mem9#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~mem9#1; 156#L553-2 [2021-12-15 17:01:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash 28695847, now seen corresponding path program 1 times [2021-12-15 17:01:32,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:32,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89918255] [2021-12-15 17:01:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:32,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:32,340 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:32,350 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:32,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:32,351 INFO L85 PathProgramCache]: Analyzing trace with hash 46898150, now seen corresponding path program 2 times [2021-12-15 17:01:32,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:32,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586276206] [2021-12-15 17:01:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:32,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:32,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:32,378 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash 705693312, now seen corresponding path program 1 times [2021-12-15 17:01:32,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:32,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786558204] [2021-12-15 17:01:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:32,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:32,401 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:32,415 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:32,778 INFO L210 LassoAnalysis]: Preferences: [2021-12-15 17:01:32,778 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-15 17:01:32,778 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-15 17:01:32,778 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-15 17:01:32,778 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-15 17:01:32,778 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:32,778 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-15 17:01:32,778 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-15 17:01:32,778 INFO L133 ssoRankerPreferences]: Filename of dumped script: KroeningSharyginaTsitovichWintersteiger-2010CAV-Fig1-alloca.i_Iteration3_Lasso [2021-12-15 17:01:32,779 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-15 17:01:32,779 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-15 17:01:32,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,843 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 [2021-12-15 17:01:32,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:32,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-15 17:01:33,226 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-15 17:01:33,226 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-15 17:01:33,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-15 17:01:33,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:33,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:33,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-15 17:01:33,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:33,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:33,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:33,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-15 17:01:33,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-15 17:01:33,252 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:33,269 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 [2021-12-15 17:01:33,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-15 17:01:33,273 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:33,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:33,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-15 17:01:33,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:33,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:33,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:33,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-15 17:01:33,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-15 17:01:33,294 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:33,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:33,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:33,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-15 17:01:33,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:33,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:33,320 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:33,320 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:33,323 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:33,323 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:33,340 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:33,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:33,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,358 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-15 17:01:33,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:33,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:33,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:33,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:33,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:33,371 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:33,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:33,388 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:33,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:33,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,405 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-15 17:01:33,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:33,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:33,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:33,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:33,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:33,417 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:33,417 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:33,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:33,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:33,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,449 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-15 17:01:33,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:33,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:33,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:33,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:33,458 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:33,459 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:33,459 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:33,474 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-15 17:01:33,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:33,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-15 17:01:33,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-15 17:01:33,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-15 17:01:33,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-15 17:01:33,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-15 17:01:33,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-15 17:01:33,513 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-15 17:01:33,514 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-15 17:01:33,529 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-15 17:01:33,534 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-15 17:01:33,534 INFO L444 ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-15 17:01:33,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:01:33,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:01:33,535 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:01:33,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-15 17:01:33,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-15 17:01:33,558 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-12-15 17:01:33,559 INFO L513 LassoAnalysis]: Proved termination. [2021-12-15 17:01:33,559 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~x~0#1.base) ULTIMATE.start_main_~x~0#1.offset)_2) = -1*v_rep(select (select #memory_int ULTIMATE.start_main_~x~0#1.base) ULTIMATE.start_main_~x~0#1.offset)_2 + 255 Supporting invariants [] [2021-12-15 17:01:33,574 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 [2021-12-15 17:01:33,605 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2021-12-15 17:01:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:01:33,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 17:01:33,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 17:01:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:01:33,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 17:01:33,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 17:01:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:01:33,674 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-15 17:01:33,675 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:33,689 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 32 transitions. Complement of second has 9 states. [2021-12-15 17:01:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-15 17:01:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-12-15 17:01:33,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 5 letters. [2021-12-15 17:01:33,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-15 17:01:33,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 10 letters. Loop has 5 letters. [2021-12-15 17:01:33,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-15 17:01:33,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 10 letters. [2021-12-15 17:01:33,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-15 17:01:33,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2021-12-15 17:01:33,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:33,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 32 transitions. [2021-12-15 17:01:33,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-15 17:01:33,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-15 17:01:33,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 32 transitions. [2021-12-15 17:01:33,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-15 17:01:33,693 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-12-15 17:01:33,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 32 transitions. [2021-12-15 17:01:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-15 17:01:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-12-15 17:01:33,695 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-12-15 17:01:33,695 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-12-15 17:01:33,695 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-15 17:01:33,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 32 transitions. [2021-12-15 17:01:33,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:01:33,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:01:33,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:01:33,696 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2021-12-15 17:01:33,696 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-15 17:01:33,696 INFO L791 eck$LassoCheckResult]: Stem: 305#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 306#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem6#1, main_#t~mem7#1, main_#t~post8#1, main_#t~mem9#1, main_#t~mem10#1, main_#t~mem5#1, main_~x~0#1.base, main_~x~0#1.offset, main_~debug~0#1.base, main_~debug~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x~0#1.base, main_~x~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~debug~0#1.base, main_~debug~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call write~int(main_#t~nondet4#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~nondet4#1;call write~int(0, main_~debug~0#1.base, main_~debug~0#1.offset, 4); 315#L558-2 call main_#t~mem5#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 317#L552-1 assume !!(main_#t~mem5#1 < 255);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 321#L553 assume 0 != (if main_#t~mem6#1 < 0 && 0 != main_#t~mem6#1 % 2 then main_#t~mem6#1 % 2 - 2 else main_#t~mem6#1 % 2);havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4);main_#t~post8#1 := main_#t~mem7#1;call write~int(main_#t~post8#1 - 1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~mem7#1;havoc main_#t~post8#1; 318#L553-2 call main_#t~mem10#1 := read~int(main_~debug~0#1.base, main_~debug~0#1.offset, 4); 320#L558 assume !(0 != main_#t~mem10#1);havoc main_#t~mem10#1; 323#L558-2 call main_#t~mem5#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 316#L552-1 assume !!(main_#t~mem5#1 < 255);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 301#L553 assume 0 != (if main_#t~mem6#1 < 0 && 0 != main_#t~mem6#1 % 2 then main_#t~mem6#1 % 2 - 2 else main_#t~mem6#1 % 2);havoc main_#t~mem6#1;call main_#t~mem7#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4);main_#t~post8#1 := main_#t~mem7#1;call write~int(main_#t~post8#1 - 1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~mem7#1;havoc main_#t~post8#1; 302#L553-2 [2021-12-15 17:01:33,696 INFO L793 eck$LassoCheckResult]: Loop: 302#L553-2 call main_#t~mem10#1 := read~int(main_~debug~0#1.base, main_~debug~0#1.offset, 4); 311#L558 assume !(0 != main_#t~mem10#1);havoc main_#t~mem10#1; 312#L558-2 call main_#t~mem5#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 313#L552-1 assume !!(main_#t~mem5#1 < 255);havoc main_#t~mem5#1;call main_#t~mem6#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4); 322#L553 assume !(0 != (if main_#t~mem6#1 < 0 && 0 != main_#t~mem6#1 % 2 then main_#t~mem6#1 % 2 - 2 else main_#t~mem6#1 % 2));havoc main_#t~mem6#1;call main_#t~mem9#1 := read~int(main_~x~0#1.base, main_~x~0#1.offset, 4);call write~int(2 + main_#t~mem9#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~mem9#1; 302#L553-2 [2021-12-15 17:01:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 705693310, now seen corresponding path program 1 times [2021-12-15 17:01:33,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779523965] [2021-12-15 17:01:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:33,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:01:33,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-15 17:01:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:01:33,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:01:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779523965] [2021-12-15 17:01:33,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779523965] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:01:33,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:01:33,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 17:01:33,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698862970] [2021-12-15 17:01:33,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:01:33,810 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:01:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:01:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash 46898150, now seen corresponding path program 3 times [2021-12-15 17:01:33,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:01:33,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654294955] [2021-12-15 17:01:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:01:33,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:01:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:33,817 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:01:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:01:33,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:01:33,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:01:33,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 17:01:33,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-15 17:01:33,878 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. cyclomatic complexity: 8 Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:01:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:01:33,918 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-12-15 17:01:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 17:01:33,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 25 transitions. [2021-12-15 17:01:33,920 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-15 17:01:33,920 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2021-12-15 17:01:33,920 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-15 17:01:33,920 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-15 17:01:33,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-15 17:01:33,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:01:33,920 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 17:01:33,920 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 17:01:33,920 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 17:01:33,920 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-15 17:01:33,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-15 17:01:33,921 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-15 17:01:33,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-15 17:01:33,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.12 05:01:33 BoogieIcfgContainer [2021-12-15 17:01:33,925 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-15 17:01:33,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 17:01:33,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 17:01:33,926 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 17:01:33,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:01:30" (3/4) ... [2021-12-15 17:01:33,928 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 17:01:33,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 17:01:33,929 INFO L158 Benchmark]: Toolchain (without parser) took 4395.17ms. Allocated memory was 90.2MB in the beginning and 157.3MB in the end (delta: 67.1MB). Free memory was 59.0MB in the beginning and 114.6MB in the end (delta: -55.6MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2021-12-15 17:01:33,929 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:01:33,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.08ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 59.0MB in the beginning and 97.1MB in the end (delta: -38.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:01:33,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.43ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 95.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:01:33,930 INFO L158 Benchmark]: Boogie Preprocessor took 33.50ms. Allocated memory is still 125.8MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:01:33,930 INFO L158 Benchmark]: RCFGBuilder took 237.96ms. Allocated memory is still 125.8MB. Free memory was 94.2MB in the beginning and 83.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 17:01:33,930 INFO L158 Benchmark]: BuchiAutomizer took 3743.15ms. Allocated memory was 125.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 114.6MB in the end (delta: -30.8MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-12-15 17:01:33,930 INFO L158 Benchmark]: Witness Printer took 2.45ms. Allocated memory is still 157.3MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:01:33,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.08ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 59.0MB in the beginning and 97.1MB in the end (delta: -38.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.43ms. Allocated memory is still 125.8MB. Free memory was 97.1MB in the beginning and 95.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.50ms. Allocated memory is still 125.8MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 237.96ms. Allocated memory is still 125.8MB. Free memory was 94.2MB in the beginning and 83.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3743.15ms. Allocated memory was 125.8MB in the beginning and 157.3MB in the end (delta: 31.5MB). Free memory was 83.8MB in the beginning and 114.6MB in the end (delta: -30.8MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 2.45ms. Allocated memory is still 157.3MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * unknown-#memory_int-unknown[x][x] + 255 and consists of 5 locations. One deterministic module has affine ranking function -1 * unknown-#memory_int-unknown[x][x] + 255 and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 24 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital238 mio100 ax108 hnf100 lsp89 ukn61 mio100 lsp37 div160 bol100 ite100 ukn100 eq161 hnf70 smp91 dnf100 smp100 tf100 neg99 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-15 17:01:33,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE