./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer --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 9016787135830d25851d4a1126db5f65005e4eb5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:54:37,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:37,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:37,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:37,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:37,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:37,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:37,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:37,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:37,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:37,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:37,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:37,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:37,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:37,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:37,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:37,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:37,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:37,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:37,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:37,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:37,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:37,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:37,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:37,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:37,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:37,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:37,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:37,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:37,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:37,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:37,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:37,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:37,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:37,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:37,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:37,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:37,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:37,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:37,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:37,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:37,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:54:37,783 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:37,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:37,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:37,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:37,785 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:37,785 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:54:37,785 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:54:37,786 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:54:37,786 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:54:37,786 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:54:37,786 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:54:37,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:37,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:54:37,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:37,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:37,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:54:37,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:54:37,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:54:37,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:37,788 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:54:37,788 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:37,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:54:37,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:37,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:37,789 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:54:37,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:37,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:54:37,790 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:54:37,791 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:54:37,791 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer 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 -> 9016787135830d25851d4a1126db5f65005e4eb5 [2019-11-25 08:54:37,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:37,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:37,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:37,960 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:37,960 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:37,961 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2019-11-25 08:54:38,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/data/f9949f355/80fa5576addc4a7799c50e3d5d538b8c/FLAGef74b49a5 [2019-11-25 08:54:38,529 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:38,529 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2019-11-25 08:54:38,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/data/f9949f355/80fa5576addc4a7799c50e3d5d538b8c/FLAGef74b49a5 [2019-11-25 08:54:39,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/data/f9949f355/80fa5576addc4a7799c50e3d5d538b8c [2019-11-25 08:54:39,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:39,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:39,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:39,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:39,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:39,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312a9843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39, skipping insertion in model container [2019-11-25 08:54:39,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:39,097 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:39,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:39,414 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:39,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:39,496 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:39,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39 WrapperNode [2019-11-25 08:54:39,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:39,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:39,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:39,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:39,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:39,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:39,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:39,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:39,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... [2019-11-25 08:54:39,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:39,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:39,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:39,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:39,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/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 [2019-11-25 08:54:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:54:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:54:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:54:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:54:39,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:39,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:39,883 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:39,883 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:54:39,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:39 BoogieIcfgContainer [2019-11-25 08:54:39,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:39,885 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:54:39,885 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:54:39,888 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:54:39,889 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:39,889 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:54:39" (1/3) ... [2019-11-25 08:54:39,890 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c117939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:54:39, skipping insertion in model container [2019-11-25 08:54:39,890 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:39,891 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:39" (2/3) ... [2019-11-25 08:54:39,891 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c117939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:54:39, skipping insertion in model container [2019-11-25 08:54:39,891 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:54:39,891 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:39" (3/3) ... [2019-11-25 08:54:39,893 INFO L371 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-2.i [2019-11-25 08:54:39,934 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:54:39,935 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:54:39,935 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:54:39,935 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:39,935 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:39,935 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:54:39,935 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:39,935 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:54:39,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-11-25 08:54:39,968 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-25 08:54:39,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:39,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:39,974 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:54:39,974 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:54:39,975 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:54:39,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2019-11-25 08:54:39,976 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-25 08:54:39,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:39,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:39,977 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:54:39,977 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:54:39,985 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L551true assume !(main_~length~0 < 1); 18#L551-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 9#L553true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 13#L554-3true [2019-11-25 08:54:39,985 INFO L796 eck$LassoCheckResult]: Loop: 13#L554-3true assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L556true assume main_~val~0 < 0;main_~val~0 := 0; 7#L556-2true call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 11#L554-2true main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 13#L554-3true [2019-11-25 08:54:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2019-11-25 08:54:39,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:39,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237884078] [2019-11-25 08:54:39,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,119 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:40,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2019-11-25 08:54:40,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:40,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628694229] [2019-11-25 08:54:40,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,139 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:40,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:40,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2019-11-25 08:54:40,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:40,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274463566] [2019-11-25 08:54:40,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:40,172 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:40,365 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-11-25 08:54:40,413 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:54:40,414 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:54:40,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:54:40,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:54:40,414 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:54:40,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:40,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:54:40,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:54:40,415 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration1_Lasso [2019-11-25 08:54:40,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:54:40,415 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:54:40,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:40,985 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-11-25 08:54:41,032 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:54:41,037 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:41,049 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:54:41,052 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:41,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:41,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:41,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:41,053 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:41,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:41,055 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 [2019-11-25 08:54:41,058 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:41,069 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 [2019-11-25 08:54:41,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:41,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:41,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:41,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:41,077 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:41,077 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:54:41,083 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:41,094 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 [2019-11-25 08:54:41,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:41,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:41,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:41,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:41,111 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:41,111 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:54:41,120 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:41,137 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 [2019-11-25 08:54:41,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:41,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:41,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:41,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:41,150 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:41,150 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:54:41,164 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:54:41,224 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2019-11-25 08:54:41,225 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:41,237 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:41,248 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:54:41,249 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:54:41,249 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2019-11-25 08:54:41,277 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-25 08:54:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:41,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:54:41,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:41,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:54:41,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:41,378 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 [2019-11-25 08:54:41,380 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2019-11-25 08:54:41,443 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2019-11-25 08:54:41,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:54:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:54:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2019-11-25 08:54:41,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:54:41,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:41,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-25 08:54:41,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:41,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-25 08:54:41,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:41,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2019-11-25 08:54:41,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:54:41,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2019-11-25 08:54:41,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:54:41,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:54:41,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2019-11-25 08:54:41,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:54:41,461 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-25 08:54:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2019-11-25 08:54:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-25 08:54:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:54:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2019-11-25 08:54:41,487 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-25 08:54:41,487 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-11-25 08:54:41,487 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:54:41,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2019-11-25 08:54:41,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:54:41,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:41,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:41,489 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:41,489 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:54:41,489 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 133#L551 assume !(main_~length~0 < 1); 138#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 134#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 135#L554-3 assume !(main_~i~0 < main_~length~0); 139#L554-4 main_~j~0 := 0; 127#L561-3 [2019-11-25 08:54:41,489 INFO L796 eck$LassoCheckResult]: Loop: 127#L561-3 assume !!(main_~j~0 < main_~length~0); 128#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 140#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 141#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 127#L561-3 [2019-11-25 08:54:41,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:41,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2019-11-25 08:54:41,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:41,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366360273] [2019-11-25 08:54:41,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:41,541 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366360273] [2019-11-25 08:54:41,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:41,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:54:41,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009211262] [2019-11-25 08:54:41,544 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:54:41,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:41,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2019-11-25 08:54:41,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:41,545 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434902427] [2019-11-25 08:54:41,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,575 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:41,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:41,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:54:41,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:54:41,619 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-25 08:54:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:41,662 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2019-11-25 08:54:41,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:54:41,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2019-11-25 08:54:41,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:54:41,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2019-11-25 08:54:41,665 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:54:41,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:54:41,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2019-11-25 08:54:41,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:54:41,666 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-11-25 08:54:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2019-11-25 08:54:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-11-25 08:54:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:54:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-25 08:54:41,668 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-25 08:54:41,668 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-25 08:54:41,669 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:54:41,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2019-11-25 08:54:41,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:54:41,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:41,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:41,670 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:41,670 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:54:41,670 INFO L794 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 172#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 173#L551 assume !(main_~length~0 < 1); 178#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 174#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 175#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 169#L556 assume !(main_~val~0 < 0); 170#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 171#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 177#L554-3 assume !(main_~i~0 < main_~length~0); 179#L554-4 main_~j~0 := 0; 167#L561-3 [2019-11-25 08:54:41,671 INFO L796 eck$LassoCheckResult]: Loop: 167#L561-3 assume !!(main_~j~0 < main_~length~0); 168#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 180#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 181#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 167#L561-3 [2019-11-25 08:54:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:41,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2019-11-25 08:54:41,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:41,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031554410] [2019-11-25 08:54:41,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,726 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:41,727 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2019-11-25 08:54:41,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:41,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337832458] [2019-11-25 08:54:41,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,736 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:41,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2019-11-25 08:54:41,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:41,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832078901] [2019-11-25 08:54:41,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:41,778 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:42,013 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-11-25 08:54:42,075 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:54:42,075 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:54:42,075 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:54:42,075 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:54:42,076 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:54:42,076 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:42,076 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:54:42,076 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:54:42,076 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration3_Lasso [2019-11-25 08:54:42,076 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:54:42,077 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:54:42,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:42,592 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:54:42,592 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:42,610 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:54:42,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:42,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:42,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:42,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:42,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:42,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:42,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:42,616 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:42,634 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 [2019-11-25 08:54:42,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:42,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:42,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:42,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:42,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:42,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:42,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:42,638 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:42,662 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 [2019-11-25 08:54:42,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:42,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:42,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:42,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:42,673 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:42,673 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 [2019-11-25 08:54:42,679 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:42,697 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 [2019-11-25 08:54:42,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:42,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:42,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:42,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:42,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:42,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:42,725 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:54:42,777 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2019-11-25 08:54:42,777 INFO L444 ModelExtractionUtils]: 6 out of 25 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:42,789 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:42,792 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:54:42,792 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:54:42,793 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~arr~0.offset, v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2, ULTIMATE.start_main_~j~0) = -1*ULTIMATE.start_main_~arr~0.offset + 1*v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2 - 4*ULTIMATE.start_main_~j~0 Supporting invariants [] [2019-11-25 08:54:42,805 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-25 08:54:42,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:54:42,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:42,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:54:42,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:42,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:54:42,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:42,862 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 [2019-11-25 08:54:42,862 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-25 08:54:42,888 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 21 states and 27 transitions. Complement of second has 6 states. [2019-11-25 08:54:42,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:54:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:54:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2019-11-25 08:54:42,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2019-11-25 08:54:42,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:42,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 15 letters. Loop has 4 letters. [2019-11-25 08:54:42,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:42,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2019-11-25 08:54:42,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:42,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2019-11-25 08:54:42,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:54:42,893 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 20 states and 26 transitions. [2019-11-25 08:54:42,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:54:42,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:54:42,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2019-11-25 08:54:42,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:54:42,893 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2019-11-25 08:54:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2019-11-25 08:54:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-25 08:54:42,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:54:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2019-11-25 08:54:42,895 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-25 08:54:42,895 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2019-11-25 08:54:42,896 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:54:42,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2019-11-25 08:54:42,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:54:42,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:42,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:42,899 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:42,899 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:54:42,900 INFO L794 eck$LassoCheckResult]: Stem: 294#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 290#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 291#L551 assume !(main_~length~0 < 1); 297#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 292#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 293#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 287#L556 assume !(main_~val~0 < 0); 288#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 289#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 295#L554-3 assume !(main_~i~0 < main_~length~0); 296#L554-4 main_~j~0 := 0; 283#L561-3 assume !!(main_~j~0 < main_~length~0); 285#L562-3 [2019-11-25 08:54:42,900 INFO L796 eck$LassoCheckResult]: Loop: 285#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 298#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 285#L562-3 [2019-11-25 08:54:42,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2019-11-25 08:54:42,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:42,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21760129] [2019-11-25 08:54:42,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:42,941 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2019-11-25 08:54:42,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:42,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148967388] [2019-11-25 08:54:42,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:42,950 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:42,957 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2019-11-25 08:54:42,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:42,957 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681952030] [2019-11-25 08:54:42,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:43,003 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:43,184 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-11-25 08:54:43,238 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:54:43,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:54:43,238 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:54:43,238 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:54:43,239 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:54:43,239 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,239 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:54:43,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:54:43,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration4_Lasso [2019-11-25 08:54:43,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:54:43,239 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:54:43,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:43,753 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:54:43,753 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,769 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 [2019-11-25 08:54:43,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,771 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:43,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:43,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,775 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,789 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 [2019-11-25 08:54:43,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,791 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:43,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,792 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:43,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,794 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,810 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 [2019-11-25 08:54:43,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,814 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:43,814 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 [2019-11-25 08:54:43,820 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,835 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 [2019-11-25 08:54:43,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:43,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:43,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,840 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,859 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 [2019-11-25 08:54:43,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,866 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:43,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,870 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,893 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 [2019-11-25 08:54:43,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,895 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:43,895 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,895 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:43,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,900 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,914 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 [2019-11-25 08:54:43,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,928 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:43,928 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,938 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:43,955 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 [2019-11-25 08:54:43,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,964 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:43,964 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,971 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:43,987 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 [2019-11-25 08:54:43,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:43,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:43,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:43,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:43,995 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:43,995 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:54:44,004 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:44,029 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 [2019-11-25 08:54:44,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:44,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:44,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:44,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:44,035 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:44,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:44,046 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:54:44,057 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-25 08:54:44,057 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 6 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:44,077 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:44,080 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:54:44,080 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:54:44,081 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) ULTIMATE.start_main_~arr~0.offset)_2) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) ULTIMATE.start_main_~arr~0.offset)_2 Supporting invariants [] [2019-11-25 08:54:44,096 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2019-11-25 08:54:44,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:54:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:44,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:54:44,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:44,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:54:44,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:44,181 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 [2019-11-25 08:54:44,181 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-25 08:54:44,246 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 8 states. [2019-11-25 08:54:44,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:54:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:54:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2019-11-25 08:54:44,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 2 letters. [2019-11-25 08:54:44,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:44,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 14 letters. Loop has 2 letters. [2019-11-25 08:54:44,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:44,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-25 08:54:44,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:44,248 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 35 transitions. [2019-11-25 08:54:44,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:54:44,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 22 states and 28 transitions. [2019-11-25 08:54:44,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:54:44,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:54:44,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2019-11-25 08:54:44,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:54:44,251 INFO L688 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-11-25 08:54:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2019-11-25 08:54:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-11-25 08:54:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:54:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2019-11-25 08:54:44,253 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-11-25 08:54:44,253 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-11-25 08:54:44,253 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:54:44,253 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2019-11-25 08:54:44,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:54:44,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:44,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:44,255 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:44,255 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:54:44,256 INFO L794 eck$LassoCheckResult]: Stem: 429#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 425#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 426#L551 assume !(main_~length~0 < 1); 432#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 427#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 428#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 422#L556 assume !(main_~val~0 < 0); 423#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 424#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 430#L554-3 assume !(main_~i~0 < main_~length~0); 431#L554-4 main_~j~0 := 0; 417#L561-3 assume !!(main_~j~0 < main_~length~0); 418#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 434#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 435#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 419#L561-3 assume !!(main_~j~0 < main_~length~0); 421#L562-3 [2019-11-25 08:54:44,256 INFO L796 eck$LassoCheckResult]: Loop: 421#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 433#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 421#L562-3 [2019-11-25 08:54:44,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2019-11-25 08:54:44,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:44,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251341006] [2019-11-25 08:54:44,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:44,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251341006] [2019-11-25 08:54:44,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023456687] [2019-11-25 08:54:44,355 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:54:44,400 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:54:44,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:54:44,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:54:44,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:44,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:54:44,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2019-11-25 08:54:44,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248416640] [2019-11-25 08:54:44,488 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:54:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2019-11-25 08:54:44,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:44,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486768589] [2019-11-25 08:54:44,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,495 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:44,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:44,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:54:44,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:54:44,528 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 10 Second operand 14 states. [2019-11-25 08:54:44,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:44,863 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2019-11-25 08:54:44,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:54:44,863 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 56 transitions. [2019-11-25 08:54:44,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:54:44,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 28 states and 35 transitions. [2019-11-25 08:54:44,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:54:44,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:54:44,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2019-11-25 08:54:44,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:54:44,866 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-25 08:54:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2019-11-25 08:54:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-11-25 08:54:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-25 08:54:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2019-11-25 08:54:44,869 INFO L711 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-11-25 08:54:44,869 INFO L591 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2019-11-25 08:54:44,869 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:54:44,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2019-11-25 08:54:44,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:54:44,870 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:54:44,870 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:54:44,871 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:44,871 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:54:44,871 INFO L794 eck$LassoCheckResult]: Stem: 572#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 568#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 569#L551 assume !(main_~length~0 < 1); 576#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 570#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 571#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 575#L556 assume !(main_~val~0 < 0); 584#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 573#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 574#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 565#L556 assume !(main_~val~0 < 0); 566#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 567#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 582#L554-3 assume !(main_~i~0 < main_~length~0); 579#L554-4 main_~j~0 := 0; 560#L561-3 assume !!(main_~j~0 < main_~length~0); 561#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 583#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 581#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 562#L561-3 assume !!(main_~j~0 < main_~length~0); 564#L562-3 [2019-11-25 08:54:44,871 INFO L796 eck$LassoCheckResult]: Loop: 564#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 577#L562-1 assume !!(main_#t~mem7 > 0);havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_#t~post9 := main_#t~mem8;call write~int(main_#t~post9 - 1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);havoc main_#t~mem8;havoc main_#t~post9; 564#L562-3 [2019-11-25 08:54:44,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2019-11-25 08:54:44,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:44,872 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528338290] [2019-11-25 08:54:44,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,916 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2019-11-25 08:54:44,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:44,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877995995] [2019-11-25 08:54:44,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,931 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:44,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:44,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2019-11-25 08:54:44,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:44,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239587980] [2019-11-25 08:54:44,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:44,994 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:45,271 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2019-11-25 08:54:45,322 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:54:45,322 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:54:45,322 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:54:45,322 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:54:45,323 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:54:45,323 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,323 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:54:45,323 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:54:45,323 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration6_Lasso [2019-11-25 08:54:45,323 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:54:45,323 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:54:45,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:54:45,677 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:54:45,678 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,682 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 [2019-11-25 08:54:45,683 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,683 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:45,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:45,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:54:45,688 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:45,701 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 [2019-11-25 08:54:45,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,703 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,703 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,703 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,705 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:45,705 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,709 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:45,717 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 [2019-11-25 08:54:45,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,721 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:45,721 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,725 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:45,730 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 [2019-11-25 08:54:45,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,735 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:45,735 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 [2019-11-25 08:54:45,741 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:45,747 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 [2019-11-25 08:54:45,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,750 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:45,750 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,754 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:45,761 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 [2019-11-25 08:54:45,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,765 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:45,765 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,770 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:54:45,775 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 [2019-11-25 08:54:45,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,777 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,777 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,777 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:45,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,781 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,788 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 [2019-11-25 08:54:45,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,793 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:54:45,793 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:54:45,800 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:54:45,805 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 [2019-11-25 08:54:45,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:54:45,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:54:45,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:54:45,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:54:45,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:54:45,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:54:45,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:54:45,809 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:54:45,815 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:54:45,815 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6282c566-93a0-4043-b773-5196a1da5e04/bin/uautomizer/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 [2019-11-25 08:54:45,818 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:54:45,818 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:54:45,819 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:54:45,819 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3 Supporting invariants [] [2019-11-25 08:54:45,826 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-11-25 08:54:45,827 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-25 08:54:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:45,870 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 [2019-11-25 08:54:45,870 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-25 08:54:45,887 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2019-11-25 08:54:45,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:54:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:54:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-25 08:54:45,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-11-25 08:54:45,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:45,889 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:54:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:45,939 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 [2019-11-25 08:54:45,939 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-25 08:54:45,956 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2019-11-25 08:54:45,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:54:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:54:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-25 08:54:45,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2019-11-25 08:54:45,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:45,958 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:54:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:45,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:54:45,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:54:46,015 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 [2019-11-25 08:54:46,015 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-25 08:54:46,032 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 6 states. [2019-11-25 08:54:46,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:54:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:54:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-11-25 08:54:46,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2019-11-25 08:54:46,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:46,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2019-11-25 08:54:46,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:46,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2019-11-25 08:54:46,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:54:46,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2019-11-25 08:54:46,035 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:54:46,035 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2019-11-25 08:54:46,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:54:46,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:54:46,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:54:46,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:54:46,035 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:46,035 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:46,035 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:54:46,035 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:54:46,036 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:54:46,036 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:54:46,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:54:46,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:54:46 BoogieIcfgContainer [2019-11-25 08:54:46,041 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:54:46,041 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:46,041 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:46,042 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:46,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:39" (3/4) ... [2019-11-25 08:54:46,045 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:54:46,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:46,047 INFO L168 Benchmark]: Toolchain (without parser) took 7007.22 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 300.4 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -155.1 MB). Peak memory consumption was 145.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:46,047 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:46,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -226.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:46,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:46,048 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:46,049 INFO L168 Benchmark]: RCFGBuilder took 321.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:46,049 INFO L168 Benchmark]: BuchiAutomizer took 6156.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 113.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 158.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:46,050 INFO L168 Benchmark]: Witness Printer took 4.03 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:46,053 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 456.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -226.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 321.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6156.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 113.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.9 MB). Peak memory consumption was 158.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.03 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. 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 - 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function -1 * arr + unknown-#length-unknown[arr] + -4 * j and consists of 4 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr] and consists of 5 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 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.1s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 109 SDtfs, 223 SDslu, 84 SDs, 0 SdLazy, 192 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital132 mio100 ax113 hnf98 lsp82 ukn79 mio100 lsp56 div100 bol100 ite100 ukn100 eq161 hnf90 smp93 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...