./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/array-memsafety/add_last-alloca-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8e64c1324249ca9b9e3c019cfc2046542af7b26 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 08:17:28,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 08:17:28,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 08:17:28,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 08:17:28,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 08:17:28,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 08:17:28,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 08:17:28,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 08:17:28,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 08:17:28,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 08:17:28,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 08:17:28,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 08:17:28,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 08:17:28,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 08:17:28,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 08:17:28,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 08:17:28,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 08:17:28,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 08:17:28,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 08:17:28,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 08:17:28,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 08:17:28,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 08:17:28,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 08:17:28,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 08:17:28,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 08:17:28,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 08:17:28,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 08:17:28,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 08:17:28,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 08:17:28,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 08:17:28,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 08:17:28,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 08:17:28,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 08:17:28,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 08:17:28,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 08:17:28,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 08:17:28,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 08:17:28,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 08:17:28,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 08:17:28,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 08:17:28,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 08:17:28,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 08:17:28,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 08:17:28,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 08:17:28,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 08:17:28,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 08:17:28,962 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 08:17:28,962 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 08:17:28,963 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 08:17:28,963 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 08:17:28,963 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 08:17:28,963 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 08:17:28,964 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 08:17:28,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 08:17:28,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 08:17:28,964 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 08:17:28,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 08:17:28,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 08:17:28,965 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 08:17:28,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 08:17:28,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 08:17:28,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 08:17:28,966 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 08:17:28,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 08:17:28,967 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 08:17:28,967 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 08:17:28,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 08:17:28,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 08:17:28,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 08:17:28,968 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 08:17:28,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 08:17:28,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 08:17:28,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 08:17:28,969 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 08:17:28,970 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 08:17:28,970 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e64c1324249ca9b9e3c019cfc2046542af7b26 [2020-10-20 08:17:29,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 08:17:29,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 08:17:29,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 08:17:29,218 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 08:17:29,219 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 08:17:29,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2020-10-20 08:17:29,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4408e7ac0/aa7340b66752461d9071589a3f75e444/FLAGdc536c9e3 [2020-10-20 08:17:29,855 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 08:17:29,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2020-10-20 08:17:29,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4408e7ac0/aa7340b66752461d9071589a3f75e444/FLAGdc536c9e3 [2020-10-20 08:17:30,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4408e7ac0/aa7340b66752461d9071589a3f75e444 [2020-10-20 08:17:30,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 08:17:30,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 08:17:30,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 08:17:30,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 08:17:30,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 08:17:30,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf9ecb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30, skipping insertion in model container [2020-10-20 08:17:30,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 08:17:30,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 08:17:30,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:17:30,746 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 08:17:30,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:17:30,852 INFO L208 MainTranslator]: Completed translation [2020-10-20 08:17:30,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30 WrapperNode [2020-10-20 08:17:30,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 08:17:30,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 08:17:30,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 08:17:30,857 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 08:17:30,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 08:17:30,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 08:17:30,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 08:17:30,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 08:17:30,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... [2020-10-20 08:17:30,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 08:17:30,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 08:17:30,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 08:17:30,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 08:17:30,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:31,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 08:17:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 08:17:31,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 08:17:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 08:17:31,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 08:17:31,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 08:17:31,300 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 08:17:31,301 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 08:17:31,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:17:31 BoogieIcfgContainer [2020-10-20 08:17:31,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 08:17:31,304 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 08:17:31,304 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 08:17:31,308 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 08:17:31,309 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:17:31,310 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 08:17:30" (1/3) ... [2020-10-20 08:17:31,311 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ad76235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:17:31, skipping insertion in model container [2020-10-20 08:17:31,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:17:31,311 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:30" (2/3) ... [2020-10-20 08:17:31,312 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ad76235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:17:31, skipping insertion in model container [2020-10-20 08:17:31,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:17:31,313 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:17:31" (3/3) ... [2020-10-20 08:17:31,315 INFO L373 chiAutomizerObserver]: Analyzing ICFG add_last-alloca-1.i [2020-10-20 08:17:31,376 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 08:17:31,376 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 08:17:31,376 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 08:17:31,377 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 08:17:31,377 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 08:17:31,377 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 08:17:31,377 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 08:17:31,377 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 08:17:31,392 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-20 08:17:31,411 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 08:17:31,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:31,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:31,417 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:17:31,417 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:31,417 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 08:17:31,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-10-20 08:17:31,419 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 08:17:31,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:31,420 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:31,421 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:17:31,421 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:31,428 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L515true assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 5#L515-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 14#L517true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 15#L520-3true [2020-10-20 08:17:31,428 INFO L796 eck$LassoCheckResult]: Loop: 15#L520-3true assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 12#L520-2true main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 15#L520-3true [2020-10-20 08:17:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-10-20 08:17:31,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:31,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452725337] [2020-10-20 08:17:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:31,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:31,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:31,590 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:31,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2020-10-20 08:17:31,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:31,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943940417] [2020-10-20 08:17:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:31,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:31,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:31,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:31,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2020-10-20 08:17:31,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:31,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513340638] [2020-10-20 08:17:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:31,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:31,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:31,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:31,875 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-20 08:17:31,962 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:17:31,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:17:31,963 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:17:31,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:17:31,964 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:17:31,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:31,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:17:31,964 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:17:31,964 INFO L133 ssoRankerPreferences]: Filename of dumped script: add_last-alloca-1.i_Iteration1_Lasso [2020-10-20 08:17:31,964 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:17:31,965 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:17:31,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,196 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:32,530 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:17:32,536 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,547 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:32,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:32,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:32,559 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:32,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:32,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,614 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,614 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,615 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:32,615 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,618 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:32,669 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:32,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:32,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,676 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:32,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:32,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,734 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:32,734 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,736 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:32,784 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,791 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:32,792 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,798 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:32,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:32,858 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,863 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:32,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:32,916 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,916 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:32,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,921 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:32,962 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:32,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:32,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:32,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:32,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:32,968 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:32,969 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:32,974 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:33,010 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:33,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:33,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:33,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:33,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:33,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:33,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:33,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:33,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:33,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:33,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:33,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:33,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:33,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:33,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:33,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:33,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:33,072 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:33,121 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:33,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:33,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:33,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:33,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:33,140 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:33,141 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:33,150 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:33,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:33,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:33,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:33,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:33,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:33,216 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:33,216 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:33,232 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:17:33,263 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-10-20 08:17:33,263 INFO L444 ModelExtractionUtils]: 13 out of 25 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:33,275 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:17:33,278 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:17:33,278 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:17:33,279 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-10-20 08:17:33,335 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 08:17:33,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:33,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:17:33,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:33,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:17:33,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:33,457 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 08:17:33,459 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 3 states. [2020-10-20 08:17:33,526 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 3 states. Result 31 states and 41 transitions. Complement of second has 7 states. [2020-10-20 08:17:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 08:17:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:17:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2020-10-20 08:17:33,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 08:17:33,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:33,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-20 08:17:33,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:33,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 08:17:33,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:33,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 41 transitions. [2020-10-20 08:17:33,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:33,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 11 states and 14 transitions. [2020-10-20 08:17:33,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 08:17:33,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-10-20 08:17:33,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2020-10-20 08:17:33,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:17:33,548 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-10-20 08:17:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2020-10-20 08:17:33,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-20 08:17:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 08:17:33,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-10-20 08:17:33,580 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 08:17:33,580 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-10-20 08:17:33,580 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 08:17:33,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-10-20 08:17:33,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:33,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:33,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:33,582 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-20 08:17:33,582 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:33,582 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 104#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 105#L515 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 106#L515-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 110#L517 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 113#L520-3 assume !(main_~k~0 < main_~length~0); 109#L525-2 [2020-10-20 08:17:33,582 INFO L796 eck$LassoCheckResult]: Loop: 109#L525-2 call main_#t~mem6 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4); 108#L525 assume !!(main_#t~mem6 != main_#t~mem7);havoc main_#t~mem6;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem9 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4);call write~int(main_#t~mem8 + main_#t~mem9, main_~a~0.base, main_~a~0.offset, 4);havoc main_#t~mem9;havoc main_#t~mem8;main_#t~post10.base, main_#t~post10.offset := main_~a~0.base, main_~a~0.offset;main_~a~0.base, main_~a~0.offset := main_#t~post10.base, 4 + main_#t~post10.offset;havoc main_#t~post10.base, main_#t~post10.offset; 109#L525-2 [2020-10-20 08:17:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:33,583 INFO L82 PathProgramCache]: Analyzing trace with hash 889568363, now seen corresponding path program 1 times [2020-10-20 08:17:33,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:33,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250276572] [2020-10-20 08:17:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:33,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:33,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250276572] [2020-10-20 08:17:33,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 08:17:33,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 08:17:33,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420746993] [2020-10-20 08:17:33,683 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 08:17:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:33,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 1 times [2020-10-20 08:17:33,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:33,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909512528] [2020-10-20 08:17:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:33,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:33,702 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:33,705 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:33,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:17:33,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 08:17:33,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 08:17:33,792 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-10-20 08:17:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:17:33,826 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-20 08:17:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 08:17:33,828 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-10-20 08:17:33,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:33,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2020-10-20 08:17:33,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 08:17:33,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 08:17:33,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-10-20 08:17:33,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:17:33,830 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-20 08:17:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-10-20 08:17:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-10-20 08:17:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 08:17:33,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-10-20 08:17:33,833 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-10-20 08:17:33,833 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-10-20 08:17:33,833 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 08:17:33,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2020-10-20 08:17:33,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:33,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:33,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:33,835 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:33,835 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:33,835 INFO L794 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 133#L515 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 135#L515-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 138#L517 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 141#L520-3 assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 139#L520-2 main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 140#L520-3 assume !(main_~k~0 < main_~length~0); 137#L525-2 [2020-10-20 08:17:33,835 INFO L796 eck$LassoCheckResult]: Loop: 137#L525-2 call main_#t~mem6 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4); 136#L525 assume !!(main_#t~mem6 != main_#t~mem7);havoc main_#t~mem6;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem9 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4);call write~int(main_#t~mem8 + main_#t~mem9, main_~a~0.base, main_~a~0.offset, 4);havoc main_#t~mem9;havoc main_#t~mem8;main_#t~post10.base, main_#t~post10.offset := main_~a~0.base, main_~a~0.offset;main_~a~0.base, main_~a~0.offset := main_#t~post10.base, 4 + main_#t~post10.offset;havoc main_#t~post10.base, main_#t~post10.offset; 137#L525-2 [2020-10-20 08:17:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash 176707625, now seen corresponding path program 1 times [2020-10-20 08:17:33,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:33,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082362895] [2020-10-20 08:17:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:33,852 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:33,865 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:33,870 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:33,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 2 times [2020-10-20 08:17:33,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:33,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969582413] [2020-10-20 08:17:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:33,879 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:33,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:33,889 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1982663218, now seen corresponding path program 1 times [2020-10-20 08:17:33,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:33,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245667358] [2020-10-20 08:17:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:34,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245667358] [2020-10-20 08:17:34,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034055325] [2020-10-20 08:17:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 08:17:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:34,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 08:17:34,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:34,381 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-10-20 08:17:34,381 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 08:17:34,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 08:17:34,395 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 08:17:34,395 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2020-10-20 08:17:34,495 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-20 08:17:34,497 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 08:17:34,498 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 10 [2020-10-20 08:17:34,499 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 08:17:34,509 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 08:17:34,513 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 08:17:34,514 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:3 [2020-10-20 08:17:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:34,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 08:17:34,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-20 08:17:34,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098419449] [2020-10-20 08:17:34,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:17:34,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 08:17:34,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-20 08:17:34,571 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 12 states. [2020-10-20 08:17:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:17:34,878 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-10-20 08:17:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 08:17:34,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2020-10-20 08:17:34,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:34,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 15 transitions. [2020-10-20 08:17:34,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-10-20 08:17:34,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-10-20 08:17:34,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2020-10-20 08:17:34,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:17:34,883 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-10-20 08:17:34,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2020-10-20 08:17:34,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-10-20 08:17:34,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 08:17:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-10-20 08:17:34,887 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-20 08:17:34,888 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-10-20 08:17:34,888 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 08:17:34,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-10-20 08:17:34,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:34,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:34,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:34,890 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:34,891 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:34,891 INFO L794 eck$LassoCheckResult]: Stem: 211#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 209#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 210#L515 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 212#L515-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 215#L517 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 218#L520-3 assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 216#L520-2 main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 217#L520-3 assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 219#L520-2 main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 220#L520-3 assume !(main_~k~0 < main_~length~0); 214#L525-2 [2020-10-20 08:17:34,893 INFO L796 eck$LassoCheckResult]: Loop: 214#L525-2 call main_#t~mem6 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4); 213#L525 assume !!(main_#t~mem6 != main_#t~mem7);havoc main_#t~mem6;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem9 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4);call write~int(main_#t~mem8 + main_#t~mem9, main_~a~0.base, main_~a~0.offset, 4);havoc main_#t~mem9;havoc main_#t~mem8;main_#t~post10.base, main_#t~post10.offset := main_~a~0.base, main_~a~0.offset;main_~a~0.base, main_~a~0.offset := main_#t~post10.base, 4 + main_#t~post10.offset;havoc main_#t~post10.base, main_#t~post10.offset; 214#L525-2 [2020-10-20 08:17:34,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:34,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1982661529, now seen corresponding path program 2 times [2020-10-20 08:17:34,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:34,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520382096] [2020-10-20 08:17:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:34,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:34,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:34,976 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:34,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 3 times [2020-10-20 08:17:34,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:34,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953739161] [2020-10-20 08:17:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:34,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:35,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:35,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:35,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1627751052, now seen corresponding path program 2 times [2020-10-20 08:17:35,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:35,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161779380] [2020-10-20 08:17:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:35,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:35,074 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:35,078 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:35,356 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-10-20 08:17:35,412 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:17:35,412 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:17:35,412 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:17:35,412 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:17:35,412 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:17:35,412 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:35,413 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:17:35,413 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:17:35,413 INFO L133 ssoRankerPreferences]: Filename of dumped script: add_last-alloca-1.i_Iteration4_Lasso [2020-10-20 08:17:35,413 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:17:35,413 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:17:35,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:35,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 08:17:36,064 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:17:36,064 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:36,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:36,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:36,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:36,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:36,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:36,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:36,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:36,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:36,089 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:36,133 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:36,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:36,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:36,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:36,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:36,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:36,140 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:36,148 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:36,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:36,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:36,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:36,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:36,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:36,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:36,206 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:36,225 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:36,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:36,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:36,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:36,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:36,256 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 08:17:36,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:36,258 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 08:17:36,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:36,261 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:36,285 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 08:17:36,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:36,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:36,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:36,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:36,301 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:36,302 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:36,305 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:36,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:36,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:36,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:36,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:36,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:36,363 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:36,363 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:36,380 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:17:36,439 INFO L443 ModelExtractionUtils]: Simplification made 22 calls to the SMT solver. [2020-10-20 08:17:36,439 INFO L444 ModelExtractionUtils]: 5 out of 25 variables were initially zero. Simplification set additionally 17 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:36,452 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:36,455 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:17:36,455 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:17:36,455 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0.offset, v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2) = -1*ULTIMATE.start_main_~a~0.offset + 1*v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2 Supporting invariants [] [2020-10-20 08:17:36,501 INFO L297 tatePredicateManager]: 5 out of 6 supporting invariants were superfluous and have been removed [2020-10-20 08:17:36,503 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-20 08:17:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:36,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:17:36,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:36,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 08:17:36,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:36,564 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-10-20 08:17:36,564 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-10-20 08:17:36,597 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 14 states and 17 transitions. Complement of second has 5 states. [2020-10-20 08:17:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 08:17:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 08:17:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-10-20 08:17:36,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2020-10-20 08:17:36,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:36,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-20 08:17:36,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:36,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 4 letters. [2020-10-20 08:17:36,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:36,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2020-10-20 08:17:36,602 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:17:36,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2020-10-20 08:17:36,602 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:17:36,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:17:36,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:17:36,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:17:36,603 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:17:36,603 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:17:36,603 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:17:36,603 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 08:17:36,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:17:36,603 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:17:36,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:17:36,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:17:36 BoogieIcfgContainer [2020-10-20 08:17:36,609 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:17:36,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:17:36,610 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:17:36,610 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:17:36,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:17:31" (3/4) ... [2020-10-20 08:17:36,613 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:17:36,613 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:17:36,615 INFO L168 Benchmark]: Toolchain (without parser) took 6453.17 ms. Allocated memory was 36.2 MB in the beginning and 78.6 MB in the end (delta: 42.5 MB). Free memory was 9.4 MB in the beginning and 23.4 MB in the end (delta: -14.0 MB). Peak memory consumption was 28.5 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:36,616 INFO L168 Benchmark]: CDTParser took 1.66 ms. Allocated memory is still 36.2 MB. Free memory is still 14.9 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 08:17:36,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.44 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 8.5 MB in the beginning and 17.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:36,617 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.11 ms. Allocated memory was 45.6 MB in the beginning and 46.7 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 29.5 MB in the end (delta: -12.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:36,618 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 ms. Allocated memory is still 46.7 MB. Free memory was 29.5 MB in the beginning and 28.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:36,619 INFO L168 Benchmark]: RCFGBuilder took 361.54 ms. Allocated memory is still 46.7 MB. Free memory was 28.0 MB in the beginning and 13.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:36,620 INFO L168 Benchmark]: BuchiAutomizer took 5305.19 ms. Allocated memory was 46.7 MB in the beginning and 78.6 MB in the end (delta: 32.0 MB). Free memory was 13.0 MB in the beginning and 23.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:36,620 INFO L168 Benchmark]: Witness Printer took 3.80 ms. Allocated memory is still 78.6 MB. Free memory is still 23.4 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 08:17:36,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.66 ms. Allocated memory is still 36.2 MB. Free memory is still 14.9 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 685.44 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 8.5 MB in the beginning and 17.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 55.11 ms. Allocated memory was 45.6 MB in the beginning and 46.7 MB in the end (delta: 1.0 MB). Free memory was 17.3 MB in the beginning and 29.5 MB in the end (delta: -12.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.57 ms. Allocated memory is still 46.7 MB. Free memory was 29.5 MB in the beginning and 28.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 361.54 ms. Allocated memory is still 46.7 MB. Free memory was 28.0 MB in the beginning and 13.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 5305.19 ms. Allocated memory was 46.7 MB in the beginning and 78.6 MB in the end (delta: 32.0 MB). Free memory was 13.0 MB in the beginning and 23.4 MB in the end (delta: -10.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 14.3 GB. * Witness Printer took 3.80 ms. Allocated memory is still 78.6 MB. Free memory is still 23.4 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * 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 * k + length and consists of 5 locations. One deterministic module has affine ranking function -1 * a + unknown-#length-unknown[arr] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 30 SDtfs, 58 SDslu, 17 SDs, 0 SdLazy, 87 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital144 mio100 ax113 hnf98 lsp83 ukn77 mio100 lsp60 div100 bol100 ite100 ukn100 eq163 hnf91 smp96 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms 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! Received shutdown request...