./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/array-memsafety/count_down-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/count_down-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 3e28603c63113c1566dc2e06da17c63059f80486 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 08:17:47,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 08:17:47,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 08:17:47,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 08:17:47,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 08:17:47,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 08:17:47,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 08:17:47,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 08:17:47,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 08:17:47,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 08:17:47,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 08:17:47,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 08:17:47,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 08:17:47,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 08:17:47,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 08:17:47,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 08:17:47,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 08:17:47,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 08:17:47,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 08:17:47,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 08:17:47,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 08:17:47,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 08:17:47,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 08:17:47,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 08:17:47,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 08:17:47,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 08:17:47,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 08:17:47,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 08:17:47,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 08:17:47,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 08:17:47,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 08:17:47,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 08:17:47,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 08:17:47,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 08:17:47,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 08:17:47,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 08:17:47,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 08:17:47,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 08:17:47,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 08:17:47,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 08:17:47,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 08:17:47,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 08:17:47,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 08:17:47,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 08:17:47,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 08:17:47,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 08:17:47,992 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 08:17:47,993 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 08:17:47,993 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 08:17:47,993 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 08:17:47,993 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 08:17:47,994 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 08:17:47,995 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 08:17:47,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 08:17:47,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 08:17:47,996 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 08:17:47,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 08:17:47,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 08:17:47,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 08:17:47,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 08:17:47,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 08:17:47,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 08:17:47,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 08:17:47,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 08:17:47,998 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 08:17:47,998 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 08:17:47,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 08:17:47,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 08:17:47,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 08:17:47,999 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 08:17:48,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 08:17:48,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 08:17:48,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 08:17:48,000 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 08:17:48,002 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 08:17:48,002 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 -> 3e28603c63113c1566dc2e06da17c63059f80486 [2020-10-20 08:17:48,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 08:17:48,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 08:17:48,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 08:17:48,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 08:17:48,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 08:17:48,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-20 08:17:48,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5345658d6/72c97aba05f4484c9870c4eb8ccdbbfa/FLAG363726874 [2020-10-20 08:17:48,841 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 08:17:48,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/count_down-alloca-1.i [2020-10-20 08:17:48,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5345658d6/72c97aba05f4484c9870c4eb8ccdbbfa/FLAG363726874 [2020-10-20 08:17:49,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5345658d6/72c97aba05f4484c9870c4eb8ccdbbfa [2020-10-20 08:17:49,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 08:17:49,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 08:17:49,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 08:17:49,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 08:17:49,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 08:17:49,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1155e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49, skipping insertion in model container [2020-10-20 08:17:49,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 08:17:49,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 08:17:49,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:17:49,648 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 08:17:49,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 08:17:49,773 INFO L208 MainTranslator]: Completed translation [2020-10-20 08:17:49,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49 WrapperNode [2020-10-20 08:17:49,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 08:17:49,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 08:17:49,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 08:17:49,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 08:17:49,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 08:17:49,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 08:17:49,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 08:17:49,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 08:17:49,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (1/1) ... [2020-10-20 08:17:49,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 08:17:49,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 08:17:49,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 08:17:49,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 08:17:49,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (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 08:17:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 08:17:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 08:17:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 08:17:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 08:17:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 08:17:49,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 08:17:50,266 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 08:17:50,267 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 08:17:50,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:17:50 BoogieIcfgContainer [2020-10-20 08:17:50,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 08:17:50,270 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 08:17:50,270 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 08:17:50,274 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 08:17:50,275 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:17:50,275 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 08:17:49" (1/3) ... [2020-10-20 08:17:50,276 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e481f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:17:50, skipping insertion in model container [2020-10-20 08:17:50,277 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:17:50,277 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 08:17:49" (2/3) ... [2020-10-20 08:17:50,277 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e481f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 08:17:50, skipping insertion in model container [2020-10-20 08:17:50,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 08:17:50,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:17:50" (3/3) ... [2020-10-20 08:17:50,280 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-1.i [2020-10-20 08:17:50,331 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 08:17:50,331 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 08:17:50,331 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 08:17:50,331 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 08:17:50,332 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 08:17:50,332 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 08:17:50,332 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 08:17:50,332 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 08:17:50,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 08:17:50,366 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 08:17:50,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:50,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:50,373 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:17:50,373 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:17:50,373 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 08:17:50,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 08:17:50,375 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 08:17:50,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:50,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:50,376 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 08:17:50,376 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:17:50,383 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L516true assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 7#L516-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 18#L518true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 4#L519-3true [2020-10-20 08:17:50,383 INFO L796 eck$LassoCheckResult]: Loop: 4#L519-3true assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 13#L521true assume main_~val~0 < 0;main_~val~0 := 0; 16#L521-2true call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 20#L519-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4#L519-3true [2020-10-20 08:17:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:50,389 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-10-20 08:17:50,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:50,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736521776] [2020-10-20 08:17:50,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:50,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:50,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:50,535 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:50,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2020-10-20 08:17:50,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:50,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812676350] [2020-10-20 08:17:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:50,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:50,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:50,569 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:50,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:50,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2020-10-20 08:17:50,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:50,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313205481] [2020-10-20 08:17:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:50,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:50,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:50,658 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:50,932 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:17:50,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:17:50,933 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:17:50,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:17:50,934 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:17:50,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:50,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:17:50,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:17:50,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration1_Lasso [2020-10-20 08:17:50,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:17:50,935 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:17:50,961 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 08:17:50,971 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 08:17:50,975 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 08:17:50,978 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 08:17:50,981 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 08:17:51,124 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 08:17:51,128 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 08:17:51,132 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 08:17:51,136 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 08:17:51,140 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 08:17:51,144 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 08:17:51,148 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 08:17:51,152 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 08:17:51,155 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 08:17:51,158 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 08:17:51,481 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:17:51,486 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 08:17:51,491 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 08:17:51,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:51,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:51,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:51,515 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) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:51,552 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 08:17:51,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:51,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:51,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:51,558 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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:51,594 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 08:17:51,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:51,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,596 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:51,597 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:51,598 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 08:17:51,631 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 08:17:51,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:51,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:51,634 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 08:17:51,643 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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:51,678 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 08:17:51,679 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:51,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:51,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:51,696 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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:51,721 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 08:17:51,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,735 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:51,736 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:51,744 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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:51,773 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 08:17:51,776 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,785 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:51,786 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:51,799 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 08:17:51,824 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 08:17:51,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:51,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:51,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:51,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:51,843 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:51,844 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:51,864 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:17:51,908 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-10-20 08:17:51,909 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 13 variables to zero. 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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:51,915 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:17:51,918 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:17:51,919 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:17:51,920 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-10-20 08:17:51,969 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 08:17:52,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:52,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:17:52,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:52,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:17:52,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:52,060 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 08:17:52,133 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 08:17:52,134 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-10-20 08:17:52,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2020-10-20 08:17:52,216 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 08:17:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:17:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-10-20 08:17:52,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 08:17:52,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:52,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-20 08:17:52,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:52,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-20 08:17:52,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:52,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2020-10-20 08:17:52,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:17:52,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2020-10-20 08:17:52,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 08:17:52,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 08:17:52,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-10-20 08:17:52,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:17:52,238 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-20 08:17:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-10-20 08:17:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 08:17:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 08:17:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2020-10-20 08:17:52,269 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-20 08:17:52,269 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-20 08:17:52,269 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 08:17:52,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2020-10-20 08:17:52,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:17:52,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:52,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:52,271 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:52,272 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:17:52,272 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 138#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 127#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 128#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 137#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 129#L519-3 assume !(main_~i~0 < main_~length~0); 130#L519-4 main_~j~0 := 0; 136#L526-3 [2020-10-20 08:17:52,272 INFO L796 eck$LassoCheckResult]: Loop: 136#L526-3 assume !!(main_~j~0 < main_~length~0); 135#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 133#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 134#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 136#L526-3 [2020-10-20 08:17:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:52,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2020-10-20 08:17:52,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:52,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613686396] [2020-10-20 08:17:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:52,345 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 08:17:52,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613686396] [2020-10-20 08:17:52,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 08:17:52,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 08:17:52,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94058058] [2020-10-20 08:17:52,351 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 08:17:52,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:52,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2020-10-20 08:17:52,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:52,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916624802] [2020-10-20 08:17:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,366 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,368 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:52,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:17:52,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 08:17:52,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 08:17:52,417 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-10-20 08:17:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:17:52,456 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-10-20 08:17:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 08:17:52,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-10-20 08:17:52,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:17:52,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2020-10-20 08:17:52,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 08:17:52,459 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 08:17:52,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-10-20 08:17:52,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:17:52,460 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-10-20 08:17:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-10-20 08:17:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-10-20 08:17:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 08:17:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-20 08:17:52,463 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 08:17:52,463 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 08:17:52,463 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 08:17:52,463 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-20 08:17:52,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 08:17:52,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:52,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:52,465 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:52,465 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 08:17:52,466 INFO L794 eck$LassoCheckResult]: Stem: 180#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 178#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 167#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 168#L516-2 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; 177#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 169#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 170#L521 assume !(main_~val~0 < 0); 179#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 181#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 171#L519-3 assume !(main_~i~0 < main_~length~0); 172#L519-4 main_~j~0 := 0; 176#L526-3 [2020-10-20 08:17:52,466 INFO L796 eck$LassoCheckResult]: Loop: 176#L526-3 assume !!(main_~j~0 < main_~length~0); 175#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 173#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 174#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 176#L526-3 [2020-10-20 08:17:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:52,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2020-10-20 08:17:52,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:52,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161502464] [2020-10-20 08:17:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,499 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:52,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2020-10-20 08:17:52,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:52,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442949802] [2020-10-20 08:17:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,531 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2020-10-20 08:17:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:52,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752407585] [2020-10-20 08:17:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,548 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:52,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:52,589 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:52,811 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-10-20 08:17:52,898 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:17:52,898 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:17:52,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:17:52,899 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:17:52,899 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:17:52,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:52,899 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:17:52,899 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:17:52,899 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration3_Lasso [2020-10-20 08:17:52,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:17:52,899 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:17:52,905 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 08:17:52,910 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 08:17:52,913 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 08:17:52,916 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 08:17:52,920 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 08:17:52,923 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 08:17:53,079 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 08:17:53,082 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 08:17:53,085 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 08:17:53,088 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 08:17:53,091 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 08:17:53,093 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 08:17:53,096 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 08:17:53,099 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 08:17:53,101 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 08:17:53,336 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:17:53,336 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,340 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 08:17:53,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:53,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:53,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:53,344 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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,376 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 08:17:53,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:53,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,383 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:53,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:53,386 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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,417 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 08:17:53,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,421 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:53,421 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:53,427 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 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 08:17:53,451 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 08:17:53,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:53,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,453 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:53,453 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:53,454 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 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,478 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 08:17:53,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,482 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:53,482 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:53,487 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 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,525 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 08:17:53,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,531 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:53,531 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:53,542 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 08:17:53,574 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 08:17:53,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,596 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:53,597 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:53,603 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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,627 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 08:17:53,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,632 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:53,633 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:53,639 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 08:17:53,692 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 08:17:53,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:53,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:53,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:53,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:53,700 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:53,700 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,716 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:17:53,769 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2020-10-20 08:17:53,770 INFO L444 ModelExtractionUtils]: 1 out of 22 variables were initially zero. Simplification set additionally 18 variables to zero. 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) [2020-10-20 08:17:53,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:53,785 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:17:53,786 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:17:53,786 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-10-20 08:17:53,829 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 08:17:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:53,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:17:53,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:53,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:17:53,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:53,873 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 08:17:53,873 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 08:17:53,873 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-20 08:17:53,889 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 20 states and 26 transitions. Complement of second has 4 states. [2020-10-20 08:17:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 08:17:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:17:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-10-20 08:17:53,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2020-10-20 08:17:53,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:53,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 4 letters. [2020-10-20 08:17:53,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:53,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 8 letters. [2020-10-20 08:17:53,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:53,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2020-10-20 08:17:53,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:53,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 25 transitions. [2020-10-20 08:17:53,894 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 08:17:53,894 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 08:17:53,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-20 08:17:53,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:17:53,895 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-20 08:17:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-20 08:17:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-20 08:17:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 08:17:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-10-20 08:17:53,897 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-20 08:17:53,898 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-20 08:17:53,898 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 08:17:53,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2020-10-20 08:17:53,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:53,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:53,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:53,900 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:53,900 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:53,900 INFO L794 eck$LassoCheckResult]: Stem: 295#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 293#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 283#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 284#L516-2 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; 291#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 279#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 280#L521 assume !(main_~val~0 < 0); 294#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 296#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 281#L519-3 assume !(main_~i~0 < main_~length~0); 282#L519-4 main_~j~0 := 0; 290#L526-3 assume !!(main_~j~0 < main_~length~0); 286#L527-3 [2020-10-20 08:17:53,900 INFO L796 eck$LassoCheckResult]: Loop: 286#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 285#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 286#L527-3 [2020-10-20 08:17:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:53,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2020-10-20 08:17:53,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:53,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053842114] [2020-10-20 08:17:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:53,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:53,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:53,926 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:53,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2020-10-20 08:17:53,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:53,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262243070] [2020-10-20 08:17:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:53,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:53,936 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:53,938 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2020-10-20 08:17:53,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:53,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390201952] [2020-10-20 08:17:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:53,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:53,963 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:53,970 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:54,162 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-20 08:17:54,214 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:17:54,214 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:17:54,214 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:17:54,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:17:54,215 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:17:54,215 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,215 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:17:54,215 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:17:54,215 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration4_Lasso [2020-10-20 08:17:54,215 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:17:54,215 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:17:54,220 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 08:17:54,225 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 08:17:54,227 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 08:17:54,230 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 08:17:54,233 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 08:17:54,236 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 08:17:54,238 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 08:17:54,242 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 08:17:54,383 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-20 08:17:54,441 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 08:17:54,445 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 08:17:54,455 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 08:17:54,458 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 08:17:54,460 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 08:17:54,464 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 08:17:54,751 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:17:54,751 INFO L489 LassoAnalysis]: Using template 'affine'. 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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,766 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 08:17:54,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:54,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:54,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:54,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:54,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:54,769 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:54,769 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:54,773 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 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,797 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 08:17:54,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:54,798 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:54,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:54,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:54,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:54,799 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:54,799 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:54,800 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:54,824 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 08:17:54,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:54,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:54,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:54,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:54,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:54,827 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,831 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:54,868 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 08:17:54,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:54,870 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:54,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:54,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:54,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:54,871 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:54,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,873 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 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,896 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 08:17:54,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:54,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:54,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:54,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:54,899 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:54,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:54,901 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 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,927 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 08:17:54,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:54,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:54,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:54,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:54,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:54,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:54,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:54,938 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:54,960 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:54,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:54,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:54,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:54,964 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:54,964 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:54,973 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 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:54,998 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 08:17:55,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:55,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:55,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:55,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:55,004 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:55,005 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:55,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:17:55,038 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-20 08:17:55,039 INFO L444 ModelExtractionUtils]: 2 out of 13 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:55,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:55,045 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 08:17:55,045 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:17:55,045 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1 Supporting invariants [] [2020-10-20 08:17:55,085 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-10-20 08:17:55,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 08:17:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:55,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 08:17:55,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:55,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 08:17:55,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:55,215 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 08:17:55,216 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-10-20 08:17:55,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-10-20 08:17:55,324 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 39 states and 51 transitions. Complement of second has 11 states. [2020-10-20 08:17:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-10-20 08:17:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 08:17:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-10-20 08:17:55,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-20 08:17:55,326 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:55,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 14 letters. Loop has 2 letters. [2020-10-20 08:17:55,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:55,327 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-20 08:17:55,328 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:55,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2020-10-20 08:17:55,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:55,330 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 34 states and 44 transitions. [2020-10-20 08:17:55,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 08:17:55,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-20 08:17:55,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2020-10-20 08:17:55,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:17:55,331 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-10-20 08:17:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2020-10-20 08:17:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-20 08:17:55,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 08:17:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-10-20 08:17:55,334 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-20 08:17:55,334 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-20 08:17:55,334 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 08:17:55,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2020-10-20 08:17:55,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:55,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:55,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:55,336 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:55,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:55,336 INFO L794 eck$LassoCheckResult]: Stem: 457#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 455#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 442#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 443#L516-2 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; 449#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 437#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 438#L521 assume !(main_~val~0 < 0); 458#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 459#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 460#L519-3 assume !(main_~i~0 < main_~length~0); 461#L519-4 main_~j~0 := 0; 454#L526-3 assume !!(main_~j~0 < main_~length~0); 447#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 463#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 452#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 453#L526-3 assume !!(main_~j~0 < main_~length~0); 445#L527-3 [2020-10-20 08:17:55,336 INFO L796 eck$LassoCheckResult]: Loop: 445#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 444#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 445#L527-3 [2020-10-20 08:17:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2020-10-20 08:17:55,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:55,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157437557] [2020-10-20 08:17:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:55,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157437557] [2020-10-20 08:17:55,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14330732] [2020-10-20 08:17:55,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 08:17:55,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 08:17:55,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 08:17:55,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 08:17:55,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:55,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 08:17:55,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-20 08:17:55,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705678401] [2020-10-20 08:17:55,508 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 08:17:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,508 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2020-10-20 08:17:55,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:55,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470227681] [2020-10-20 08:17:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,516 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:55,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:17:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 08:17:55,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-20 08:17:55,547 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand 10 states. [2020-10-20 08:17:55,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:17:55,661 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2020-10-20 08:17:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 08:17:55,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2020-10-20 08:17:55,664 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 08:17:55,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 40 states and 51 transitions. [2020-10-20 08:17:55,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-10-20 08:17:55,665 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 08:17:55,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-20 08:17:55,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:17:55,666 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-20 08:17:55,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-20 08:17:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-20 08:17:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 08:17:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-20 08:17:55,669 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 08:17:55,669 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 08:17:55,669 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 08:17:55,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-20 08:17:55,670 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:55,670 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:55,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:55,672 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:55,672 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:55,672 INFO L794 eck$LassoCheckResult]: Stem: 599#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 597#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 581#L516 assume main_~length~0 < 1 || main_~length~0 >= 536870911;main_~length~0 := 1; 582#L516-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 615#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 584#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 585#L521 assume !(main_~val~0 < 0); 613#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 602#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 603#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 607#L521 assume !(main_~val~0 < 0); 610#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 609#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 606#L519-3 assume !(main_~i~0 < main_~length~0); 593#L519-4 main_~j~0 := 0; 594#L526-3 assume !!(main_~j~0 < main_~length~0); 589#L527-3 [2020-10-20 08:17:55,673 INFO L796 eck$LassoCheckResult]: Loop: 589#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 588#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 589#L527-3 [2020-10-20 08:17:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash -420071865, now seen corresponding path program 1 times [2020-10-20 08:17:55,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:55,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311322356] [2020-10-20 08:17:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:55,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311322356] [2020-10-20 08:17:55,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649477669] [2020-10-20 08:17:55,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 08:17:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:55,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 08:17:55,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 08:17:55,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 08:17:55,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-10-20 08:17:55,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698119089] [2020-10-20 08:17:55,818 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 08:17:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2020-10-20 08:17:55,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:55,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239904827] [2020-10-20 08:17:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,826 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:55,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 08:17:55,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 08:17:55,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 08:17:55,860 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand 5 states. [2020-10-20 08:17:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 08:17:55,884 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-10-20 08:17:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 08:17:55,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-10-20 08:17:55,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:55,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 28 transitions. [2020-10-20 08:17:55,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 08:17:55,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 08:17:55,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2020-10-20 08:17:55,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:17:55,887 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-20 08:17:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2020-10-20 08:17:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 08:17:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 08:17:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-10-20 08:17:55,889 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-20 08:17:55,889 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-20 08:17:55,889 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 08:17:55,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2020-10-20 08:17:55,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:55,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:55,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:55,891 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:55,891 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:55,892 INFO L794 eck$LassoCheckResult]: Stem: 717#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 715#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 700#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 701#L516-2 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; 713#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 702#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 703#L521 assume !(main_~val~0 < 0); 716#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 718#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 704#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 705#L521 assume !(main_~val~0 < 0); 721#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 720#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 719#L519-3 assume !(main_~i~0 < main_~length~0); 711#L519-4 main_~j~0 := 0; 712#L526-3 assume !!(main_~j~0 < main_~length~0); 707#L527-3 [2020-10-20 08:17:55,892 INFO L796 eck$LassoCheckResult]: Loop: 707#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 706#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 707#L527-3 [2020-10-20 08:17:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1431189115, now seen corresponding path program 2 times [2020-10-20 08:17:55,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:55,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821768019] [2020-10-20 08:17:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,918 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,919 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 4 times [2020-10-20 08:17:55,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:55,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448995186] [2020-10-20 08:17:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,926 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,928 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:55,929 INFO L82 PathProgramCache]: Analyzing trace with hash -983203254, now seen corresponding path program 2 times [2020-10-20 08:17:55,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:55,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476668980] [2020-10-20 08:17:55,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:55,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:55,958 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:56,194 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2020-10-20 08:17:56,264 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:17:56,265 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:17:56,265 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:17:56,265 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:17:56,265 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:17:56,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,265 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:17:56,266 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:17:56,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration7_Lasso [2020-10-20 08:17:56,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:17:56,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:17:56,269 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 08:17:56,272 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 08:17:56,275 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 08:17:56,278 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 08:17:56,281 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 08:17:56,284 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 08:17:56,288 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 08:17:56,402 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 08:17:56,407 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 08:17:56,409 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 08:17:56,411 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 08:17:56,413 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 08:17:56,425 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 08:17:56,427 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 08:17:56,670 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:17:56,671 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,673 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 08:17:56,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:56,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:56,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:56,678 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:56,701 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 08:17:56,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,703 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:56,703 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:56,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,714 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 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,744 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 08:17:56,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,747 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:56,747 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:56,750 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 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,773 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 08:17:56,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,776 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:56,776 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:56,780 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:56,815 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 08:17:56,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:56,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:56,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,820 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 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,850 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 08:17:56,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:56,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,861 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:56,861 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:56,863 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 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,892 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 08:17:56,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,895 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:56,895 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:56,897 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 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,921 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 08:17:56,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,926 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:56,926 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:56,931 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 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:56,954 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 08:17:56,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:56,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:56,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:56,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:56,960 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:56,961 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:56,972 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 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:57,014 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 08:17:57,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:57,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:57,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:57,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:57,017 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:57,017 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:57,020 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 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:57,049 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 08:17:57,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:57,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:57,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:57,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:57,052 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:57,053 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:57,059 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:57,098 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 08:17:57,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:57,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:57,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:57,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:57,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:57,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:57,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:57,107 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:17:57,112 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 08:17:57,113 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:57,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:17:57,126 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:17:57,126 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:17:57,126 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3 Supporting invariants [] Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:57,167 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 08:17:57,169 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 08:17:57,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:57,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:17:57,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:57,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 08:17:57,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:57,213 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 08:17:57,213 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 08:17:57,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 08:17:57,231 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 7 states. [2020-10-20 08:17:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 08:17:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:17:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 08:17:57,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 2 letters. [2020-10-20 08:17:57,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:57,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 2 letters. [2020-10-20 08:17:57,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:57,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-20 08:17:57,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:57,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-20 08:17:57,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:57,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 32 transitions. [2020-10-20 08:17:57,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 08:17:57,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 08:17:57,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2020-10-20 08:17:57,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 08:17:57,236 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-20 08:17:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2020-10-20 08:17:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-20 08:17:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 08:17:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-20 08:17:57,238 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-20 08:17:57,238 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-20 08:17:57,238 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-20 08:17:57,239 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2020-10-20 08:17:57,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 08:17:57,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 08:17:57,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 08:17:57,241 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 08:17:57,241 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 08:17:57,241 INFO L794 eck$LassoCheckResult]: Stem: 862#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 860#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 843#L516 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 844#L516-2 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; 855#L518 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 845#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 846#L521 assume !(main_~val~0 < 0); 861#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 866#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 847#L519-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 848#L521 assume !(main_~val~0 < 0); 863#L521-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 864#L519-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 865#L519-3 assume !(main_~i~0 < main_~length~0); 853#L519-4 main_~j~0 := 0; 854#L526-3 assume !!(main_~j~0 < main_~length~0); 852#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 867#L527-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 856#L526-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 857#L526-3 assume !!(main_~j~0 < main_~length~0); 850#L527-3 [2020-10-20 08:17:57,241 INFO L796 eck$LassoCheckResult]: Loop: 850#L527-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 849#L527-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 850#L527-3 [2020-10-20 08:17:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:57,242 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2020-10-20 08:17:57,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:57,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423744249] [2020-10-20 08:17:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:57,254 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:57,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:57,269 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:57,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 5 times [2020-10-20 08:17:57,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:57,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847248995] [2020-10-20 08:17:57,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:57,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:57,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:57,279 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:57,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2020-10-20 08:17:57,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 08:17:57,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322835313] [2020-10-20 08:17:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 08:17:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:57,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 08:17:57,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 08:17:57,312 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 08:17:57,616 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 89 [2020-10-20 08:17:57,697 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 08:17:57,697 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 08:17:57,697 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 08:17:57,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 08:17:57,697 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 08:17:57,698 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:57,698 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 08:17:57,698 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 08:17:57,698 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-1.i_Iteration8_Lasso [2020-10-20 08:17:57,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 08:17:57,698 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 08:17:57,701 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 08:17:57,708 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 08:17:57,709 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 08:17:57,711 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 08:17:57,837 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 08:17:57,840 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 08:17:57,845 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 08:17:57,848 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 08:17:57,850 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 08:17:57,852 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 08:17:57,854 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 08:17:57,857 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 08:17:57,867 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 08:17:57,870 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 08:17:57,872 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 08:17:58,108 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 08:17:58,108 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:58,112 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 08:17:58,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:58,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:58,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,117 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 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,141 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 08:17:58,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,142 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:58,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,142 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,143 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:58,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:58,144 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 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,168 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 08:17:58,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:58,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:58,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:58,173 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 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,197 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 08:17:58,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,201 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:58,201 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:58,204 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 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,227 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 08:17:58,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,243 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:58,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:58,252 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 50 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 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,275 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 08:17:58,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,279 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:58,279 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:58,290 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 08:17:58,321 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,324 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 08:17:58,324 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 08:17:58,329 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 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,353 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 08:17:58,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 08:17:58,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 08:17:58,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 08:17:58,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 08:17:58,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 08:17:58,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 08:17:58,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 08:17:58,357 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 08:17:58,360 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 08:17:58,360 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 08:17:58,364 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 08:17:58,364 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 08:17:58,364 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 08:17:58,365 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4 Supporting invariants [] [2020-10-20 08:17:58,396 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-10-20 08:17:58,397 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 08:17:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:58,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:17:58,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:58,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 08:17:58,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:58,452 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 08:17:58,453 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 08:17:58,453 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 08:17:58,473 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-10-20 08:17:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 08:17:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:17:58,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 08:17:58,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-20 08:17:58,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:58,478 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:17:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:58,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:17:58,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:58,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 08:17:58,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:58,528 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 08:17:58,529 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 08:17:58,529 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 08:17:58,555 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-10-20 08:17:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 08:17:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:17:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 08:17:58,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-20 08:17:58,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:58,558 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 08:17:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 08:17:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:58,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 08:17:58,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 08:17:58,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 08:17:58,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 08:17:58,611 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 08:17:58,612 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 08:17:58,612 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 08:17:58,633 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 6 states. [2020-10-20 08:17:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 08:17:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 08:17:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-10-20 08:17:58,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-20 08:17:58,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:58,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2020-10-20 08:17:58,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:58,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2020-10-20 08:17:58,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 08:17:58,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-20 08:17:58,637 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:17:58,637 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-20 08:17:58,637 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 08:17:58,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 08:17:58,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 08:17:58,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 08:17:58,638 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:17:58,638 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:17:58,638 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 08:17:58,638 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-20 08:17:58,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 08:17:58,638 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 08:17:58,638 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 08:17:58,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 08:17:58 BoogieIcfgContainer [2020-10-20 08:17:58,645 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 08:17:58,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 08:17:58,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 08:17:58,645 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 08:17:58,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 08:17:50" (3/4) ... [2020-10-20 08:17:58,649 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 08:17:58,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 08:17:58,651 INFO L168 Benchmark]: Toolchain (without parser) took 9466.94 ms. Allocated memory was 37.2 MB in the beginning and 88.6 MB in the end (delta: 51.4 MB). Free memory was 18.8 MB in the beginning and 17.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 52.6 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,652 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 35.1 MB. Free memory was 13.0 MB in the beginning and 12.9 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.91 ms. Allocated memory was 37.2 MB in the beginning and 46.1 MB in the end (delta: 8.9 MB). Free memory was 17.9 MB in the beginning and 29.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 16.3 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.57 ms. Allocated memory is still 46.1 MB. Free memory was 29.3 MB in the beginning and 27.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,653 INFO L168 Benchmark]: Boogie Preprocessor took 28.85 ms. Allocated memory is still 46.1 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,654 INFO L168 Benchmark]: RCFGBuilder took 406.57 ms. Allocated memory is still 46.1 MB. Free memory was 25.8 MB in the beginning and 24.9 MB in the end (delta: 898.1 kB). Peak memory consumption was 15.3 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,655 INFO L168 Benchmark]: BuchiAutomizer took 8374.65 ms. Allocated memory was 46.1 MB in the beginning and 88.6 MB in the end (delta: 42.5 MB). Free memory was 24.6 MB in the beginning and 18.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,655 INFO L168 Benchmark]: Witness Printer took 4.27 ms. Allocated memory is still 88.6 MB. Free memory was 18.7 MB in the beginning and 17.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 08:17:58,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 35.1 MB. Free memory was 13.0 MB in the beginning and 12.9 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 590.91 ms. Allocated memory was 37.2 MB in the beginning and 46.1 MB in the end (delta: 8.9 MB). Free memory was 17.9 MB in the beginning and 29.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 16.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.57 ms. Allocated memory is still 46.1 MB. Free memory was 29.3 MB in the beginning and 27.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.85 ms. Allocated memory is still 46.1 MB. Free memory was 27.4 MB in the beginning and 26.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 406.57 ms. Allocated memory is still 46.1 MB. Free memory was 25.8 MB in the beginning and 24.9 MB in the end (delta: 898.1 kB). Peak memory consumption was 15.3 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 8374.65 ms. Allocated memory was 46.1 MB in the beginning and 88.6 MB in the end (delta: 42.5 MB). Free memory was 24.6 MB in the beginning and 18.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 14.3 GB. * Witness Printer took 4.27 ms. Allocated memory is still 88.6 MB. Free memory was 18.7 MB in the beginning and 17.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr + i * 4 + -4] and consists of 8 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.3s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 7.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 135 SDtfs, 195 SDslu, 110 SDs, 0 SdLazy, 204 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU3 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital141 mio100 ax112 hnf97 lsp83 ukn77 mio100 lsp58 div100 bol100 ite100 ukn100 eq155 hnf90 smp86 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 3 VariablesLoop: 2 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...