./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/count_up_and_down_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/termination-15/count_up_and_down_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 94f95b6ef0a3c8650bd30cb1958ada590298bd1c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:49:36,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:49:36,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:49:36,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:49:36,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:49:36,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:49:36,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:49:36,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:49:36,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:49:36,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:49:36,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:49:36,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:49:36,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:49:36,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:49:36,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:49:36,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:49:36,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:49:36,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:49:36,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:49:36,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:49:36,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:49:36,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:49:36,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:49:36,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:49:36,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:49:36,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:49:36,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:49:36,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:49:36,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:49:36,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:49:36,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:49:36,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:49:36,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:49:36,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:49:36,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:49:36,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:49:36,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:49:36,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:49:36,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:49:36,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:49:36,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:49:36,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:49:36,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:49:36,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:49:36,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:49:36,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:49:36,980 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:49:36,980 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:49:36,981 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:49:36,981 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:49:36,981 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:49:36,981 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:49:36,982 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:49:36,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:49:36,983 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:49:36,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:49:36,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:49:36,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:49:36,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:49:36,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:49:36,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:49:36,985 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:49:36,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:49:36,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:49:36,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:49:36,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:49:36,987 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:49:36,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:49:36,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:49:36,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:49:36,988 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:49:36,990 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:49:36,990 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94f95b6ef0a3c8650bd30cb1958ada590298bd1c [2020-10-19 18:49:37,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:49:37,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:49:37,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:49:37,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:49:37,363 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:49:37,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/count_up_and_down_alloca.i [2020-10-19 18:49:37,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7c62a66/9f0b9624f3d047bd86a4055f09d63c6a/FLAG5851a9f66 [2020-10-19 18:49:37,997 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:49:37,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/count_up_and_down_alloca.i [2020-10-19 18:49:38,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7c62a66/9f0b9624f3d047bd86a4055f09d63c6a/FLAG5851a9f66 [2020-10-19 18:49:38,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7c62a66/9f0b9624f3d047bd86a4055f09d63c6a [2020-10-19 18:49:38,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:49:38,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:49:38,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:49:38,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:49:38,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:49:38,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:49:38" (1/1) ... [2020-10-19 18:49:38,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb8510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:38, skipping insertion in model container [2020-10-19 18:49:38,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:49:38" (1/1) ... [2020-10-19 18:49:38,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:49:38,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:49:38,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:49:38,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:49:38,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:49:39,021 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:49:39,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39 WrapperNode [2020-10-19 18:49:39,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:49:39,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:49:39,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:49:39,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:49:39,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:49:39,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:49:39,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:49:39,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:49:39,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (1/1) ... [2020-10-19 18:49:39,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:49:39,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:49:39,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:49:39,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:49:39,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (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 [2020-10-19 18:49:39,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:49:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:49:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:49:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:49:39,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:49:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:49:39,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:49:39,416 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 18:49:39,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:49:39 BoogieIcfgContainer [2020-10-19 18:49:39,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:49:39,422 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:49:39,422 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:49:39,428 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:49:39,430 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:49:39,430 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:49:38" (1/3) ... [2020-10-19 18:49:39,432 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@364694aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:49:39, skipping insertion in model container [2020-10-19 18:49:39,432 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:49:39,432 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:49:39" (2/3) ... [2020-10-19 18:49:39,433 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@364694aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:49:39, skipping insertion in model container [2020-10-19 18:49:39,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:49:39,434 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:49:39" (3/3) ... [2020-10-19 18:49:39,435 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_up_and_down_alloca.i [2020-10-19 18:49:39,494 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:49:39,495 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:49:39,495 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:49:39,495 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:49:39,495 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:49:39,496 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:49:39,496 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:49:39,496 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:49:39,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-19 18:49:39,539 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:49:39,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:49:39,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:49:39,547 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 18:49:39,547 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:49:39,548 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:49:39,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-19 18:49:39,549 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-19 18:49:39,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:49:39,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:49:39,550 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 18:49:39,550 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:49:39,557 INFO L794 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 5#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 17#L367true assume !(main_~length~0 < 1); 3#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 12#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 15#L371-3true [2020-10-19 18:49:39,557 INFO L796 eck$LassoCheckResult]: Loop: 15#L371-3true assume !!(main_~i~0 < main_~length~0);call main_#t~mem208 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * (main_~i~0 - 1), 4);call write~int(1 + main_#t~mem208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~mem208; 13#L371-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 15#L371-3true [2020-10-19 18:49:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:39,563 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-10-19 18:49:39,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:39,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838857660] [2020-10-19 18:49:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:39,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:39,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:39,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:39,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:39,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2020-10-19 18:49:39,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:39,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871995584] [2020-10-19 18:49:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:39,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:39,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:39,758 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2020-10-19 18:49:39,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:39,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925073194] [2020-10-19 18:49:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:39,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:39,805 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:39,810 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:40,043 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-10-19 18:49:40,115 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:49:40,116 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:49:40,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:49:40,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:49:40,117 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:49:40,117 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:40,117 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:49:40,117 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:49:40,117 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration1_Lasso [2020-10-19 18:49:40,117 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:49:40,118 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:49:40,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:40,678 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:49:40,686 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) [2020-10-19 18:49:40,701 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 [2020-10-19 18:49:40,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:40,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:40,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:40,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:40,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:40,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:40,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:40,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:40,770 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 [2020-10-19 18:49:40,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:40,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:40,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:40,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:40,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:40,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:40,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:40,778 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:40,836 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:40,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:40,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:40,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:40,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:40,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:40,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:40,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:40,843 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) [2020-10-19 18:49:40,890 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 [2020-10-19 18:49:40,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:40,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:40,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:40,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:40,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:40,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:40,895 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 [2020-10-19 18:49:40,897 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 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 [2020-10-19 18:49:40,933 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 [2020-10-19 18:49:40,936 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:40,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:40,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:40,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:40,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:40,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:40,938 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:40,941 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 [2020-10-19 18:49:41,009 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 [2020-10-19 18:49:41,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:41,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:41,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:41,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:41,022 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:41,022 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:49:41,030 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:41,072 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 [2020-10-19 18:49:41,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:41,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:41,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:41,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:41,081 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:41,082 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:41,091 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) [2020-10-19 18:49:41,135 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 [2020-10-19 18:49:41,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:41,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:41,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:41,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:41,150 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:41,150 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:41,167 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:49:41,197 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-10-19 18:49:41,197 INFO L444 ModelExtractionUtils]: 9 out of 22 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:41,204 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:41,210 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:49:41,210 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:49:41,212 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~arr~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1) = -4*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~arr~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc206.base)_1 Supporting invariants [] [2020-10-19 18:49:41,265 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 18:49:41,277 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-19 18:49:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:41,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:49:41,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:41,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:49:41,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:41,409 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-10-19 18:49:41,411 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 4 states. [2020-10-19 18:49:41,513 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 4 states. Result 36 states and 51 transitions. Complement of second has 9 states. [2020-10-19 18:49:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:49:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-19 18:49:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2020-10-19 18:49:41,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-19 18:49:41,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:41,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 7 letters. Loop has 2 letters. [2020-10-19 18:49:41,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:41,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-19 18:49:41,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:41,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 51 transitions. [2020-10-19 18:49:41,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:49:41,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 13 states and 17 transitions. [2020-10-19 18:49:41,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:49:41,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:49:41,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-10-19 18:49:41,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:49:41,537 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-10-19 18:49:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-10-19 18:49:41,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-19 18:49:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-19 18:49:41,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-10-19 18:49:41,570 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-10-19 18:49:41,571 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-10-19 18:49:41,571 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:49:41,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-10-19 18:49:41,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:49:41,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:49:41,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:49:41,573 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:49:41,574 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:49:41,574 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 124#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 125#L367 assume !(main_~length~0 < 1); 131#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 132#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 135#L371-3 assume !(main_~i~0 < main_~length~0); 136#L371-4 main_~j~0 := 0; 129#L374-3 [2020-10-19 18:49:41,575 INFO L796 eck$LassoCheckResult]: Loop: 129#L374-3 assume !!(main_~j~0 < main_~length~0); 126#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 127#L375-1 assume !(main_#t~mem210 > 0);havoc main_#t~mem210; 128#L374-2 main_#t~post209 := main_~j~0;main_~j~0 := 1 + main_#t~post209;havoc main_#t~post209; 129#L374-3 [2020-10-19 18:49:41,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:41,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815505, now seen corresponding path program 1 times [2020-10-19 18:49:41,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:41,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782337098] [2020-10-19 18:49:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:41,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:41,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:41,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:41,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2036812, now seen corresponding path program 1 times [2020-10-19 18:49:41,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:41,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069395715] [2020-10-19 18:49:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:41,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:41,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:41,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:41,622 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:41,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1386095268, now seen corresponding path program 1 times [2020-10-19 18:49:41,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:41,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212251991] [2020-10-19 18:49:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:41,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:41,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:41,700 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:41,869 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-19 18:49:41,937 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:49:41,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:49:41,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:49:41,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:49:41,937 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:49:41,938 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:41,938 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:49:41,938 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:49:41,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration2_Lasso [2020-10-19 18:49:41,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:49:41,939 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:49:41,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:41,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:42,418 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:49:42,418 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) [2020-10-19 18:49:42,430 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 [2020-10-19 18:49:42,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:42,435 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:42,485 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 [2020-10-19 18:49:42,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:42,492 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-19 18:49:42,540 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 [2020-10-19 18:49:42,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:42,546 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) [2020-10-19 18:49:42,590 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 [2020-10-19 18:49:42,592 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,597 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:42,597 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:42,604 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 [2020-10-19 18:49:42,640 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 [2020-10-19 18:49:42,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:42,646 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 [2020-10-19 18:49:42,682 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 [2020-10-19 18:49:42,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,686 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:42,689 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 [2020-10-19 18:49:42,717 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 [2020-10-19 18:49:42,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,720 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,720 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:42,732 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 [2020-10-19 18:49:42,761 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 [2020-10-19 18:49:42,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:42,767 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) [2020-10-19 18:49:42,814 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 [2020-10-19 18:49:42,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:42,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:42,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:42,822 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:42,861 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:42,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,866 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:42,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:49:42,870 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:42,922 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:42,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,927 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:42,927 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:49:42,934 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) [2020-10-19 18:49:42,974 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:42,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:42,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:42,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:42,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:42,984 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:42,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:49:42,998 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:49:43,041 INFO L443 ModelExtractionUtils]: Simplification made 14 calls to the SMT solver. [2020-10-19 18:49:43,042 INFO L444 ModelExtractionUtils]: 3 out of 25 variables were initially zero. Simplification set additionally 19 variables to zero. 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) [2020-10-19 18:49:43,054 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:43,057 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:49:43,058 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:49:43,058 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 [] [2020-10-19 18:49:43,147 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 18:49:43,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:43,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:49:43,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:43,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:49:43,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:43,200 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 [2020-10-19 18:49:43,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-19 18:49:43,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 18 states and 24 transitions. Complement of second has 4 states. [2020-10-19 18:49:43,216 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 [2020-10-19 18:49:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:49:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2020-10-19 18:49:43,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2020-10-19 18:49:43,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:43,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2020-10-19 18:49:43,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:43,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2020-10-19 18:49:43,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:43,219 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2020-10-19 18:49:43,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:49:43,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 17 states and 23 transitions. [2020-10-19 18:49:43,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:49:43,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:49:43,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2020-10-19 18:49:43,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:49:43,222 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-10-19 18:49:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2020-10-19 18:49:43,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-19 18:49:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-19 18:49:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2020-10-19 18:49:43,224 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-10-19 18:49:43,224 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2020-10-19 18:49:43,224 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:49:43,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2020-10-19 18:49:43,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:49:43,225 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:49:43,225 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:49:43,226 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:49:43,226 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:49:43,226 INFO L794 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 220#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 221#L367 assume !(main_~length~0 < 1); 230#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 231#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 232#L371-3 assume !(main_~i~0 < main_~length~0); 235#L371-4 main_~j~0 := 0; 229#L374-3 assume !!(main_~j~0 < main_~length~0); 222#L375-3 [2020-10-19 18:49:43,226 INFO L796 eck$LassoCheckResult]: Loop: 222#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 223#L375-1 assume !!(main_#t~mem210 > 0);havoc main_#t~mem210;call main_#t~mem211 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post212 := main_#t~mem211;call write~int(main_#t~post212 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post212;havoc main_#t~mem211; 222#L375-3 [2020-10-19 18:49:43,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,226 INFO L82 PathProgramCache]: Analyzing trace with hash 176705843, now seen corresponding path program 1 times [2020-10-19 18:49:43,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817958714] [2020-10-19 18:49:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,237 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,250 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 1 times [2020-10-19 18:49:43,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90855168] [2020-10-19 18:49:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,262 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:43,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1984375400, now seen corresponding path program 1 times [2020-10-19 18:49:43,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696228849] [2020-10-19 18:49:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:43,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696228849] [2020-10-19 18:49:43,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:49:43,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:49:43,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033884982] [2020-10-19 18:49:43,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:49:43,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:49:43,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:49:43,458 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-10-19 18:49:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:49:43,516 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2020-10-19 18:49:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:49:43,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2020-10-19 18:49:43,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:49:43,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 32 transitions. [2020-10-19 18:49:43,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-10-19 18:49:43,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-10-19 18:49:43,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 32 transitions. [2020-10-19 18:49:43,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:49:43,520 INFO L691 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2020-10-19 18:49:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 32 transitions. [2020-10-19 18:49:43,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2020-10-19 18:49:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 18:49:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2020-10-19 18:49:43,523 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-10-19 18:49:43,524 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-10-19 18:49:43,524 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:49:43,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 23 transitions. [2020-10-19 18:49:43,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:49:43,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:49:43,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:49:43,526 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:49:43,526 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:49:43,526 INFO L794 eck$LassoCheckResult]: Stem: 286#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 282#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 283#L367 assume !(main_~length~0 < 1); 287#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 288#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 289#L371-3 assume !(main_~i~0 < main_~length~0); 293#L371-4 main_~j~0 := 0; 284#L374-3 assume !!(main_~j~0 < main_~length~0); 285#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 292#L375-1 assume !(main_#t~mem210 > 0);havoc main_#t~mem210; 280#L374-2 main_#t~post209 := main_~j~0;main_~j~0 := 1 + main_#t~post209;havoc main_#t~post209; 281#L374-3 assume !!(main_~j~0 < main_~length~0); 276#L375-3 [2020-10-19 18:49:43,526 INFO L796 eck$LassoCheckResult]: Loop: 276#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 277#L375-1 assume !!(main_#t~mem210 > 0);havoc main_#t~mem210;call main_#t~mem211 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post212 := main_#t~mem211;call write~int(main_#t~post212 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post212;havoc main_#t~mem211; 276#L375-3 [2020-10-19 18:49:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,527 INFO L82 PathProgramCache]: Analyzing trace with hash -19280312, now seen corresponding path program 2 times [2020-10-19 18:49:43,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661360690] [2020-10-19 18:49:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:43,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661360690] [2020-10-19 18:49:43,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266004215] [2020-10-19 18:49:43,571 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:49:43,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:49:43,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:49:43,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:49:43,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:43,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:49:43,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-10-19 18:49:43,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150140471] [2020-10-19 18:49:43,658 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:49:43,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 2 times [2020-10-19 18:49:43,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40859526] [2020-10-19 18:49:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,669 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,674 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:43,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:49:43,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:49:43,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:49:43,702 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-10-19 18:49:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:49:43,781 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-10-19 18:49:43,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:49:43,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 41 transitions. [2020-10-19 18:49:43,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:49:43,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 22 transitions. [2020-10-19 18:49:43,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:49:43,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 18:49:43,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 22 transitions. [2020-10-19 18:49:43,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:49:43,785 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-10-19 18:49:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 22 transitions. [2020-10-19 18:49:43,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-19 18:49:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 18:49:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-19 18:49:43,788 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-19 18:49:43,788 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-19 18:49:43,789 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:49:43,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2020-10-19 18:49:43,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:49:43,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:49:43,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:49:43,790 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:49:43,791 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:49:43,791 INFO L794 eck$LassoCheckResult]: Stem: 391#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 385#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~mem208, main_#t~post207, main_#t~mem211, main_#t~post212, main_#t~mem210, main_#t~post209, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 386#L367 assume !(main_~length~0 < 1); 392#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 393#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);call write~int(0, main_~arr~0.base, main_~arr~0.offset, 4);main_~i~0 := 1; 396#L371-3 assume !!(main_~i~0 < main_~length~0);call main_#t~mem208 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * (main_~i~0 - 1), 4);call write~int(1 + main_#t~mem208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~mem208; 394#L371-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 395#L371-3 assume !(main_~i~0 < main_~length~0); 398#L371-4 main_~j~0 := 0; 389#L374-3 assume !!(main_~j~0 < main_~length~0); 390#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 397#L375-1 assume !(main_#t~mem210 > 0);havoc main_#t~mem210; 387#L374-2 main_#t~post209 := main_~j~0;main_~j~0 := 1 + main_#t~post209;havoc main_#t~post209; 388#L374-3 assume !!(main_~j~0 < main_~length~0); 381#L375-3 [2020-10-19 18:49:43,791 INFO L796 eck$LassoCheckResult]: Loop: 381#L375-3 call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 382#L375-1 assume !!(main_#t~mem210 > 0);havoc main_#t~mem210;call main_#t~mem211 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post212 := main_#t~mem211;call write~int(main_#t~post212 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~post212;havoc main_#t~mem211; 381#L375-3 [2020-10-19 18:49:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,792 INFO L82 PathProgramCache]: Analyzing trace with hash -744742010, now seen corresponding path program 1 times [2020-10-19 18:49:43,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295816541] [2020-10-19 18:49:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,826 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,827 INFO L82 PathProgramCache]: Analyzing trace with hash 2278, now seen corresponding path program 3 times [2020-10-19 18:49:43,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384490278] [2020-10-19 18:49:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,838 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:43,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1562468139, now seen corresponding path program 1 times [2020-10-19 18:49:43,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:49:43,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390538857] [2020-10-19 18:49:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:49:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:49:43,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:49:43,882 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:49:44,149 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2020-10-19 18:49:44,250 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:49:44,251 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:49:44,251 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:49:44,251 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:49:44,251 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:49:44,251 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,251 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:49:44,251 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:49:44,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_up_and_down_alloca.i_Iteration5_Lasso [2020-10-19 18:49:44,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:49:44,252 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:49:44,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:49:44,640 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:49:44,641 INFO L489 LassoAnalysis]: Using template 'affine'. 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) [2020-10-19 18:49:44,665 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 [2020-10-19 18:49:44,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:44,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:44,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:44,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:44,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:44,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:44,670 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,680 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) [2020-10-19 18:49:44,732 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 [2020-10-19 18:49:44,734 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:44,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:44,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:44,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:44,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:44,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:44,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,738 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) [2020-10-19 18:49:44,776 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 [2020-10-19 18:49:44,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:44,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:44,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:44,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:44,781 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:44,781 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,784 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) [2020-10-19 18:49:44,823 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 [2020-10-19 18:49:44,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:44,827 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:44,827 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:44,827 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:44,827 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:44,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:44,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,831 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:44,871 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 [2020-10-19 18:49:44,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:44,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:44,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:44,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:44,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:44,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:44,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,877 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:44,917 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 [2020-10-19 18:49:44,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:44,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:44,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:44,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:44,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:44,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:44,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,923 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:44,965 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 [2020-10-19 18:49:44,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:44,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:44,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:44,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:44,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:44,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:44,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:44,970 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:45,004 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 [2020-10-19 18:49:45,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:45,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:45,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:45,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:45,011 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:49:45,011 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:45,016 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) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:45,037 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 [2020-10-19 18:49:45,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:49:45,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:49:45,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:49:45,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:49:45,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:49:45,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:49:45,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:49:45,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:49:45,050 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:49:45,050 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:49:45,052 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:49:45,052 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:49:45,053 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:49:45,057 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))_2) = 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))_2 Supporting invariants [] [2020-10-19 18:49:45,085 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 18:49:45,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 18:49:45,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:45,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:49:45,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:45,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:49:45,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:45,142 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 [2020-10-19 18:49:45,142 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-19 18:49:45,156 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 21 states and 24 transitions. Complement of second has 7 states. [2020-10-19 18:49:45,156 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 [2020-10-19 18:49:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:49:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-10-19 18:49:45,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2020-10-19 18:49:45,157 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:45,158 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:49:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:45,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:49:45,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:45,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:49:45,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:45,207 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 [2020-10-19 18:49:45,208 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-19 18:49:45,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 21 states and 24 transitions. Complement of second has 7 states. [2020-10-19 18:49:45,220 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 [2020-10-19 18:49:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:49:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-10-19 18:49:45,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 2 letters. [2020-10-19 18:49:45,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:45,221 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:49:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:49:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:45,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:49:45,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:49:45,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:49:45,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:49:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:49:45,269 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 [2020-10-19 18:49:45,270 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-19 18:49:45,287 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 23 states and 28 transitions. Complement of second has 6 states. [2020-10-19 18:49:45,288 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 [2020-10-19 18:49:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:49:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-10-19 18:49:45,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 2 letters. [2020-10-19 18:49:45,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:45,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 16 letters. Loop has 2 letters. [2020-10-19 18:49:45,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:45,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2020-10-19 18:49:45,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:49:45,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2020-10-19 18:49:45,291 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:49:45,292 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2020-10-19 18:49:45,292 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:49:45,292 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:49:45,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:49:45,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:49:45,292 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:49:45,292 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:49:45,293 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:49:45,293 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:49:45,293 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:49:45,293 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:49:45,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:49:45,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:49:45 BoogieIcfgContainer [2020-10-19 18:49:45,301 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:49:45,301 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:49:45,301 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:49:45,301 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:49:45,302 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:49:39" (3/4) ... [2020-10-19 18:49:45,306 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:49:45,306 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:49:45,309 INFO L168 Benchmark]: Toolchain (without parser) took 6984.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 954.6 MB in the beginning and 799.4 MB in the end (delta: 155.2 MB). Peak memory consumption was 343.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:49:45,309 INFO L168 Benchmark]: CDTParser took 1.24 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:49:45,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -109.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:49:45,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:49:45,311 INFO L168 Benchmark]: Boogie Preprocessor took 28.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:49:45,311 INFO L168 Benchmark]: RCFGBuilder took 319.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:49:45,312 INFO L168 Benchmark]: BuchiAutomizer took 5879.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 102.2 MB). Free memory was 1.0 GB in the beginning and 799.4 MB in the end (delta: 240.2 MB). Peak memory consumption was 342.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:49:45,313 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 1.2 GB. Free memory is still 799.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:49:45,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 692.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.0 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -109.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.96 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 319.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5879.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 102.2 MB). Free memory was 1.0 GB in the beginning and 799.4 MB in the end (delta: 240.2 MB). Peak memory consumption was 342.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.25 ms. Allocated memory is still 1.2 GB. Free memory is still 799.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -4 * i + -1 * arr + unknown-#length-unknown[__builtin_alloca(length*sizeof(int))] and consists of 6 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.8s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 73 SDtfs, 109 SDslu, 51 SDs, 0 SdLazy, 121 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital131 mio100 ax100 hnf97 lsp95 ukn77 mio100 lsp58 div100 bol100 ite100 ukn100 eq169 hnf87 smp96 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 2 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...