./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9016787135830d25851d4a1126db5f65005e4eb5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:39:28,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:39:28,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:39:28,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:39:28,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:39:28,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:39:28,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:39:28,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:39:28,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:39:28,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:39:28,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:39:28,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:39:28,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:39:28,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:39:28,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:39:28,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:39:28,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:39:28,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:39:28,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:39:28,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:39:28,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:39:28,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:39:28,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:39:28,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:39:28,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:39:28,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:39:28,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:39:28,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:39:28,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:39:28,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:39:28,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:39:28,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:39:28,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:39:28,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:39:28,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:39:28,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:39:28,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:39:28,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:39:28,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:39:28,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:39:28,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:39:28,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:39:28,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:39:28,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:39:28,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:39:28,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:39:28,852 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:39:28,853 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:39:28,853 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:39:28,853 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:39:28,853 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:39:28,854 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:39:28,854 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:39:28,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:39:28,854 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:39:28,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:39:28,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:39:28,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:39:28,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:39:28,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:39:28,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:39:28,856 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:39:28,856 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:39:28,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:39:28,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:39:28,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:39:28,857 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:39:28,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:39:28,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:39:28,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:39:28,858 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:39:28,859 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:39:28,860 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9016787135830d25851d4a1126db5f65005e4eb5 [2020-10-20 06:39:29,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:39:29,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:39:29,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:39:29,083 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:39:29,084 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:39:29,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2020-10-20 06:39:29,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4dc54cbe/5e0e8fb1a1004dc4b88bda79cd879804/FLAG2df6c7280 [2020-10-20 06:39:29,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:39:29,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2020-10-20 06:39:29,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4dc54cbe/5e0e8fb1a1004dc4b88bda79cd879804/FLAG2df6c7280 [2020-10-20 06:39:29,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4dc54cbe/5e0e8fb1a1004dc4b88bda79cd879804 [2020-10-20 06:39:29,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:39:29,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:39:29,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:39:29,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:39:29,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:39:29,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:39:29" (1/1) ... [2020-10-20 06:39:29,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9bb993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:29, skipping insertion in model container [2020-10-20 06:39:29,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:39:29" (1/1) ... [2020-10-20 06:39:30,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:39:30,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:39:30,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:39:30,507 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:39:30,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:39:30,625 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:39:30,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30 WrapperNode [2020-10-20 06:39:30,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:39:30,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:39:30,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:39:30,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:39:30,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:39:30,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:39:30,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:39:30,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:39:30,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... [2020-10-20 06:39:30,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:39:30,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:39:30,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:39:30,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:39:30,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:39:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:39:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:39:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:39:30,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:39:30,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:39:31,054 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:39:31,054 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-20 06:39:31,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:39:31 BoogieIcfgContainer [2020-10-20 06:39:31,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:39:31,057 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:39:31,057 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:39:31,060 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:39:31,061 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:39:31,061 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:39:29" (1/3) ... [2020-10-20 06:39:31,062 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6854f82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:39:31, skipping insertion in model container [2020-10-20 06:39:31,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:39:31,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:39:30" (2/3) ... [2020-10-20 06:39:31,063 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6854f82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:39:31, skipping insertion in model container [2020-10-20 06:39:31,063 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:39:31,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:39:31" (3/3) ... [2020-10-20 06:39:31,065 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-2.i [2020-10-20 06:39:31,115 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:39:31,115 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:39:31,116 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:39:31,116 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:39:31,116 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:39:31,117 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:39:31,117 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:39:31,117 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:39:31,132 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:39:31,156 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:39:31,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:31,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:31,163 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 06:39:31,163 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:39:31,163 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:39:31,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:39:31,165 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 06:39:31,165 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:31,165 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:31,166 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 06:39:31,166 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:39:31,173 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L551true assume !(main_~length~0 < 1); 18#L551-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 9#L553true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 13#L554-3true [2020-10-20 06:39:31,173 INFO L796 eck$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 [2020-10-20 06:39:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-10-20 06:39:31,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:31,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593703275] [2020-10-20 06:39:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:31,309 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:31,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:31,341 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:31,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:31,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2020-10-20 06:39:31,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:31,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9336736] [2020-10-20 06:39:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:31,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:31,365 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:31,368 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2020-10-20 06:39:31,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:31,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832361336] [2020-10-20 06:39:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:31,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:31,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:31,418 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:31,661 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:39:31,662 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:39:31,662 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:39:31,662 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:39:31,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:39:31,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:31,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:39:31,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:39:31,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration1_Lasso [2020-10-20 06:39:31,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:39:31,664 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:39:31,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:31,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:32,222 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:39:32,227 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:32,241 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:32,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:32,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:32,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:32,257 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:32,299 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:32,301 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:32,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:32,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,306 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:32,347 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:32,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:32,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:32,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,354 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:32,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:32,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,397 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:32,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,398 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:32,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,405 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:32,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:32,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:32,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,456 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:32,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:32,502 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,511 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:32,511 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:32,519 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:32,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,586 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:32,586 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:32,593 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,621 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:32,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:32,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:32,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:32,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:32,637 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:32,637 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:32,654 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:39:32,686 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-10-20 06:39:32,687 INFO L444 ModelExtractionUtils]: 8 out of 22 variables were initially zero. Simplification set additionally 11 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:32,694 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:39:32,700 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:39:32,701 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:39:32,702 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-10-20 06:39:32,755 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 06:39:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:32,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:39:32,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:32,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:39:32,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:32,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:32,916 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:39:32,917 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-10-20 06:39:32,993 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 3 states. Result 43 states and 60 transitions. Complement of second has 7 states. [2020-10-20 06:39:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:39:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:39:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-10-20 06:39:32,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-20 06:39:33,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:33,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-20 06:39:33,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:33,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-20 06:39:33,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:33,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2020-10-20 06:39:33,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:39:33,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2020-10-20 06:39:33,012 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:39:33,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:39:33,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-10-20 06:39:33,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:39:33,014 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-20 06:39:33,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-10-20 06:39:33,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 06:39:33,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:39:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2020-10-20 06:39:33,043 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-20 06:39:33,043 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-20 06:39:33,044 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:39:33,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2020-10-20 06:39:33,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:39:33,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:33,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:33,045 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:39:33,045 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:39:33,046 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 133#L551 assume !(main_~length~0 < 1); 138#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 134#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 135#L554-3 assume !(main_~i~0 < main_~length~0); 139#L554-4 main_~j~0 := 0; 127#L561-3 [2020-10-20 06:39:33,046 INFO L796 eck$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 [2020-10-20 06:39:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2020-10-20 06:39:33,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:33,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734772864] [2020-10-20 06:39:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:33,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734772864] [2020-10-20 06:39:33,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:39:33,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:39:33,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445629805] [2020-10-20 06:39:33,129 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:39:33,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:33,130 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2020-10-20 06:39:33,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:33,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704503672] [2020-10-20 06:39:33,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:33,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:39:33,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:39:33,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:39:33,218 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-10-20 06:39:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:39:33,279 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-10-20 06:39:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:39:33,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-10-20 06:39:33,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:39:33,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2020-10-20 06:39:33,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-20 06:39:33,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:39:33,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-10-20 06:39:33,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:39:33,287 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-10-20 06:39:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-10-20 06:39:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-10-20 06:39:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 06:39:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-20 06:39:33,290 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 06:39:33,297 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-20 06:39:33,297 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:39:33,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-20 06:39:33,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-20 06:39:33,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:33,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:33,299 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:39:33,299 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 06:39:33,300 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 [2020-10-20 06:39:33,300 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 [2020-10-20 06:39:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:33,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2020-10-20 06:39:33,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:33,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249996026] [2020-10-20 06:39:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,332 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,364 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:33,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:33,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2020-10-20 06:39:33,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:33,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237599431] [2020-10-20 06:39:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,379 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:33,385 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2020-10-20 06:39:33,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:33,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931659174] [2020-10-20 06:39:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,420 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:33,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:33,448 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:33,620 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-20 06:39:33,674 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:39:33,674 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:39:33,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:39:33,675 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:39:33,675 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:39:33,675 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:33,675 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:39:33,675 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:39:33,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration3_Lasso [2020-10-20 06:39:33,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:39:33,675 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:39:33,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:33,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:34,115 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:39:34,116 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,121 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:34,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:34,124 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:34,130 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:34,191 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:34,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:34,200 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 [2020-10-20 06:39:34,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,256 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,264 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:34,264 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:34,268 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,316 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:34,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,319 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:34,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:34,321 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,357 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,363 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:34,363 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:34,367 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,406 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,413 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:34,413 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:34,420 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,444 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,456 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:34,457 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:34,461 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:34,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:34,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,518 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:34,518 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 [2020-10-20 06:39:34,524 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:34,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:34,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:34,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:34,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:34,582 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:34,582 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:34,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:39:34,651 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2020-10-20 06:39:34,651 INFO L444 ModelExtractionUtils]: 1 out of 22 variables were initially zero. Simplification set additionally 18 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:34,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:34,666 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:39:34,666 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:39:34,666 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-10-20 06:39:34,706 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 06:39:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:34,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:39:34,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:34,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:39:34,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:34,777 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:39:34,777 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-20 06:39:34,814 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 20 states and 26 transitions. Complement of second has 4 states. [2020-10-20 06:39:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 06:39:34,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:39:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-10-20 06:39:34,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2020-10-20 06:39:34,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:34,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 4 letters. [2020-10-20 06:39:34,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:34,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 8 letters. [2020-10-20 06:39:34,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:34,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2020-10-20 06:39:34,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:34,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 25 transitions. [2020-10-20 06:39:34,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:39:34,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-20 06:39:34,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-20 06:39:34,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:39:34,820 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-20 06:39:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-20 06:39:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-20 06:39:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 06:39:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-10-20 06:39:34,822 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-20 06:39:34,822 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-20 06:39:34,822 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:39:34,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2020-10-20 06:39:34,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:34,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:34,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:34,824 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:39:34,824 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:39:34,824 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 286#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; 287#L551 assume !(main_~length~0 < 1); 293#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; 288#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 289#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 283#L556 assume !(main_~val~0 < 0); 284#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 285#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 291#L554-3 assume !(main_~i~0 < main_~length~0); 292#L554-4 main_~j~0 := 0; 279#L561-3 assume !!(main_~j~0 < main_~length~0); 281#L562-3 [2020-10-20 06:39:34,825 INFO L796 eck$LassoCheckResult]: Loop: 281#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 294#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; 281#L562-3 [2020-10-20 06:39:34,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:34,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2020-10-20 06:39:34,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:34,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076458425] [2020-10-20 06:39:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:34,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:34,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:34,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2020-10-20 06:39:34,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:34,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161137132] [2020-10-20 06:39:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:34,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:34,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:34,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:34,858 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2020-10-20 06:39:34,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:34,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45330562] [2020-10-20 06:39:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:34,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:34,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:34,889 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:35,053 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-20 06:39:35,113 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:39:35,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:39:35,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:39:35,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:39:35,114 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:39:35,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:39:35,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:39:35,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration4_Lasso [2020-10-20 06:39:35,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:39:35,114 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:39:35,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:35,591 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:39:35,591 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,605 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:35,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,607 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:35,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,609 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:35,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:35,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,634 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 [2020-10-20 06:39:35,636 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,636 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:35,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:35,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:35,638 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:35,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,664 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:35,664 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:35,666 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:35,690 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:35,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,692 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:35,692 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:35,693 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,717 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:35,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,720 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:35,720 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:35,725 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:35,761 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 Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:35,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:35,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:35,764 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,786 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:35,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,789 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:35,789 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:35,793 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:35,820 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:35,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:35,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:35,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:35,826 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:35,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:35,835 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:39:35,858 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-20 06:39:35,859 INFO L444 ModelExtractionUtils]: 2 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:35,868 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:35,875 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:39:35,875 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:39:35,875 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ ULTIMATE.start_main_~arr~0.offset (* ULTIMATE.start_main_~i~0 4) (- 4)))_1 Supporting invariants [] [2020-10-20 06:39:35,910 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-10-20 06:39:35,913 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:39:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:35,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:39:35,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:36,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:39:36,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:36,065 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-10-20 06:39:36,065 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-10-20 06:39:36,186 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 39 states and 51 transitions. Complement of second has 11 states. [2020-10-20 06:39:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-10-20 06:39:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-20 06:39:36,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-10-20 06:39:36,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-20 06:39:36,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:36,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 14 letters. Loop has 2 letters. [2020-10-20 06:39:36,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:36,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-20 06:39:36,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:36,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2020-10-20 06:39:36,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:36,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 34 states and 44 transitions. [2020-10-20 06:39:36,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 06:39:36,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-20 06:39:36,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2020-10-20 06:39:36,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:39:36,200 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-10-20 06:39:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2020-10-20 06:39:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-20 06:39:36,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-20 06:39:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-10-20 06:39:36,203 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-20 06:39:36,203 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-20 06:39:36,203 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:39:36,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2020-10-20 06:39:36,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:36,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:36,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:36,205 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:39:36,206 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:39:36,206 INFO L794 eck$LassoCheckResult]: Stem: 449#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 445#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; 446#L551 assume !(main_~length~0 < 1); 455#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; 447#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 448#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 452#L556 assume !(main_~val~0 < 0); 463#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 450#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 451#L554-3 assume !(main_~i~0 < main_~length~0); 461#L554-4 main_~j~0 := 0; 437#L561-3 assume !!(main_~j~0 < main_~length~0); 438#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 462#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 460#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 439#L561-3 assume !!(main_~j~0 < main_~length~0); 441#L562-3 [2020-10-20 06:39:36,206 INFO L796 eck$LassoCheckResult]: Loop: 441#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 456#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; 441#L562-3 [2020-10-20 06:39:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2020-10-20 06:39:36,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:36,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018063224] [2020-10-20 06:39:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:36,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018063224] [2020-10-20 06:39:36,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726222579] [2020-10-20 06:39:36,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:39:36,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:39:36,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:39:36,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:39:36,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:36,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:39:36,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-20 06:39:36,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599779356] [2020-10-20 06:39:36,349 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:39:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2020-10-20 06:39:36,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:36,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727108073] [2020-10-20 06:39:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,364 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,365 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:36,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:39:36,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:39:36,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:39:36,400 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand 10 states. [2020-10-20 06:39:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:39:36,532 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2020-10-20 06:39:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:39:36,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2020-10-20 06:39:36,535 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-20 06:39:36,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 40 states and 51 transitions. [2020-10-20 06:39:36,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-10-20 06:39:36,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 06:39:36,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-20 06:39:36,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:39:36,537 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-20 06:39:36,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-20 06:39:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-20 06:39:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:39:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-20 06:39:36,540 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 06:39:36,540 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-20 06:39:36,540 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:39:36,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-20 06:39:36,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:36,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:36,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:36,544 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:39:36,544 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:39:36,544 INFO L794 eck$LassoCheckResult]: Stem: 593#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 589#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 590#L551 assume main_~length~0 < 1;main_~length~0 := 1; 595#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 615#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 597#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 598#L556 assume !(main_~val~0 < 0); 613#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 612#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 611#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 608#L556 assume !(main_~val~0 < 0); 610#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 609#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 607#L554-3 assume !(main_~i~0 < main_~length~0); 602#L554-4 main_~j~0 := 0; 581#L561-3 assume !!(main_~j~0 < main_~length~0); 582#L562-3 [2020-10-20 06:39:36,544 INFO L796 eck$LassoCheckResult]: Loop: 582#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 599#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; 582#L562-3 [2020-10-20 06:39:36,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash -420071865, now seen corresponding path program 1 times [2020-10-20 06:39:36,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:36,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197282902] [2020-10-20 06:39:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:36,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197282902] [2020-10-20 06:39:36,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197925144] [2020-10-20 06:39:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:39:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:36,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:39:36,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:36,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:39:36,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-10-20 06:39:36,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718989646] [2020-10-20 06:39:36,679 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:39:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:36,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2020-10-20 06:39:36,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:36,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781680867] [2020-10-20 06:39:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,687 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,693 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:36,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:39:36,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:39:36,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:39:36,718 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand 5 states. [2020-10-20 06:39:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:39:36,756 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-10-20 06:39:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:39:36,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-10-20 06:39:36,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:36,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 28 transitions. [2020-10-20 06:39:36,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:39:36,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 06:39:36,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2020-10-20 06:39:36,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:39:36,759 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-20 06:39:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2020-10-20 06:39:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 06:39:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 06:39:36,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-10-20 06:39:36,763 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-20 06:39:36,763 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-20 06:39:36,763 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:39:36,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2020-10-20 06:39:36,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:36,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:36,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:36,768 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:39:36,769 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:39:36,769 INFO L794 eck$LassoCheckResult]: Stem: 711#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 707#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; 708#L551 assume !(main_~length~0 < 1); 713#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; 709#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 710#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 704#L556 assume !(main_~val~0 < 0); 705#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 706#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 712#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 714#L556 assume !(main_~val~0 < 0); 721#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 720#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 719#L554-3 assume !(main_~i~0 < main_~length~0); 718#L554-4 main_~j~0 := 0; 700#L561-3 assume !!(main_~j~0 < main_~length~0); 701#L562-3 [2020-10-20 06:39:36,769 INFO L796 eck$LassoCheckResult]: Loop: 701#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 715#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; 701#L562-3 [2020-10-20 06:39:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:36,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1431189115, now seen corresponding path program 2 times [2020-10-20 06:39:36,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:36,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880355094] [2020-10-20 06:39:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,813 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,818 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:36,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:36,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 4 times [2020-10-20 06:39:36,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:36,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053613701] [2020-10-20 06:39:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,836 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash -983203254, now seen corresponding path program 2 times [2020-10-20 06:39:36,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:36,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505373457] [2020-10-20 06:39:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,857 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:36,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:36,872 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:37,082 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-20 06:39:37,170 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:39:37,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:39:37,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:39:37,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:39:37,170 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:39:37,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,171 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:39:37,171 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:39:37,171 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration7_Lasso [2020-10-20 06:39:37,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:39:37,171 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:39:37,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:37,585 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:39:37,586 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:37,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:37,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:37,593 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,617 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:37,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:37,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:37,620 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:37,643 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,646 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:37,646 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:37,650 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,672 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,675 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:37,675 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:37,683 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:37,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:37,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:37,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,741 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:37,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:37,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:37,744 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,767 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,770 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:37,770 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:37,773 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,797 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,801 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:37,801 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:37,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,835 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:37,835 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:37,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,870 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,870 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,870 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,870 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,873 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:37,873 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:37,875 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,905 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:37,906 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:37,910 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,932 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:37,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:37,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:37,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:37,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:37,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:37,935 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:37,935 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:37,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:39:37,938 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:39:37,938 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:37,957 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:39:37,957 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:39:37,957 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:39:37,957 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 [] [2020-10-20 06:39:37,992 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 06:39:37,994 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:39:38,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:38,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:39:38,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:38,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:38,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:39:38,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:38,042 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:39:38,042 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-20 06:39:38,063 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 7 states. [2020-10-20 06:39:38,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:39:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:39:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 06:39:38,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 2 letters. [2020-10-20 06:39:38,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:38,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 2 letters. [2020-10-20 06:39:38,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:38,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-20 06:39:38,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:38,067 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-20 06:39:38,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:38,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 32 transitions. [2020-10-20 06:39:38,068 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-20 06:39:38,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-20 06:39:38,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2020-10-20 06:39:38,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:39:38,069 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-20 06:39:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2020-10-20 06:39:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-20 06:39:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 06:39:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-20 06:39:38,078 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-20 06:39:38,079 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-20 06:39:38,079 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-20 06:39:38,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2020-10-20 06:39:38,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-20 06:39:38,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:39:38,083 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:39:38,084 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:39:38,084 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-20 06:39:38,084 INFO L794 eck$LassoCheckResult]: Stem: 855#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 851#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; 852#L551 assume !(main_~length~0 < 1); 857#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; 853#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 854#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 848#L556 assume !(main_~val~0 < 0); 849#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 850#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 856#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 858#L556 assume !(main_~val~0 < 0); 866#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 865#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 864#L554-3 assume !(main_~i~0 < main_~length~0); 862#L554-4 main_~j~0 := 0; 843#L561-3 assume !!(main_~j~0 < main_~length~0); 844#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 860#L562-1 assume !(main_#t~mem7 > 0);havoc main_#t~mem7; 861#L561-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 845#L561-3 assume !!(main_~j~0 < main_~length~0); 846#L562-3 [2020-10-20 06:39:38,084 INFO L796 eck$LassoCheckResult]: Loop: 846#L562-3 call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4); 859#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; 846#L562-3 [2020-10-20 06:39:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2020-10-20 06:39:38,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:38,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717278978] [2020-10-20 06:39:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:38,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:38,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:38,142 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:38,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:38,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 5 times [2020-10-20 06:39:38,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:38,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835862000] [2020-10-20 06:39:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:38,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:38,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:38,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:38,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:38,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2020-10-20 06:39:38,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:39:38,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004435693] [2020-10-20 06:39:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:39:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:38,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:39:38,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:39:38,184 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:39:38,455 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2020-10-20 06:39:38,529 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:39:38,530 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:39:38,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:39:38,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:39:38,530 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:39:38,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:38,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:39:38,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:39:38,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration8_Lasso [2020-10-20 06:39:38,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:39:38,531 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:39:38,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:39:38,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:39:38,944 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:38,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:38,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:38,953 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:38,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:38,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:38,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:38,954 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:38,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:38,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:38,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:38,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:38,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:38,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:38,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:38,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:38,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:38,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:38,982 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:39,010 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:39,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:39,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:39,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:39,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:39,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:39,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:39,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:39:39,014 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:39,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:39,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:39,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:39,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:39,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:39,039 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:39,039 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:39,043 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:39,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:39,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:39,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:39,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:39,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:39,071 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:39,071 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:39,083 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:39,111 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:39,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:39,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:39,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:39,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:39,114 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:39,114 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:39:39,118 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:39,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:39,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:39,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:39,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:39,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:39,156 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:39:39,156 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:39,170 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:39,205 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:39:39,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:39:39,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:39:39,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:39:39,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:39:39,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:39:39,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:39:39,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:39,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:39:39,216 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:39:39,216 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:39:39,223 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:39:39,223 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:39:39,223 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:39:39,223 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_4 Supporting invariants [] Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:39:39,264 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-10-20 06:39:39,266 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:39:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:39,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:39:39,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:39,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:39:39,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:39,361 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:39:39,361 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 06:39:39,378 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-10-20 06:39:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:39:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:39:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 06:39:39,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-20 06:39:39,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:39,380 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:39:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:39,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:39:39,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:39,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:39:39,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:39,428 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:39:39,429 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 06:39:39,443 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 29 states and 35 transitions. Complement of second has 7 states. [2020-10-20 06:39:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:39:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:39:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-20 06:39:39,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-20 06:39:39,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:39,445 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:39:39,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:39:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:39,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:39:39,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:39:39,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:39:39,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:39:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:39:39,492 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-20 06:39:39,493 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-20 06:39:39,511 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 31 states and 39 transitions. Complement of second has 6 states. [2020-10-20 06:39:39,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 06:39:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-20 06:39:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-10-20 06:39:39,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-20 06:39:39,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:39,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2020-10-20 06:39:39,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:39,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2020-10-20 06:39:39,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:39:39,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-20 06:39:39,516 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:39:39,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-20 06:39:39,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:39:39,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:39:39,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:39:39,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:39:39,516 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:39:39,516 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:39:39,516 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:39:39,517 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-20 06:39:39,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:39:39,517 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:39:39,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:39:39,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:39:39 BoogieIcfgContainer [2020-10-20 06:39:39,523 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:39:39,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:39:39,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:39:39,524 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:39:39,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:39:31" (3/4) ... [2020-10-20 06:39:39,528 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:39:39,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:39:39,529 INFO L168 Benchmark]: Toolchain (without parser) took 9549.68 ms. Allocated memory was 35.7 MB in the beginning and 90.7 MB in the end (delta: 55.1 MB). Free memory was 16.0 MB in the beginning and 32.4 MB in the end (delta: -16.4 MB). Peak memory consumption was 38.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:39:39,530 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 34.1 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:39:39,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.05 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 15.1 MB in the beginning and 16.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:39:39,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 45.1 MB. Free memory was 28.0 MB in the beginning and 26.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:39:39,531 INFO L168 Benchmark]: Boogie Preprocessor took 27.64 ms. Allocated memory is still 45.1 MB. Free memory was 26.2 MB in the beginning and 24.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:39:39,532 INFO L168 Benchmark]: RCFGBuilder took 348.00 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 24.6 MB in the beginning and 23.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:39:39,533 INFO L168 Benchmark]: BuchiAutomizer took 8466.76 ms. Allocated memory was 45.6 MB in the beginning and 90.7 MB in the end (delta: 45.1 MB). Free memory was 22.7 MB in the beginning and 32.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 35.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:39:39,533 INFO L168 Benchmark]: Witness Printer took 4.24 ms. Allocated memory is still 90.7 MB. Free memory is still 32.4 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:39:39,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 34.1 MB. Free memory was 10.9 MB in the beginning and 10.9 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 640.05 ms. Allocated memory was 35.7 MB in the beginning and 44.6 MB in the end (delta: 8.9 MB). Free memory was 15.1 MB in the beginning and 16.6 MB in the end (delta: -1.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 45.1 MB. Free memory was 28.0 MB in the beginning and 26.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 27.64 ms. Allocated memory is still 45.1 MB. Free memory was 26.2 MB in the beginning and 24.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 348.00 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 24.6 MB in the beginning and 23.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 8466.76 ms. Allocated memory was 45.6 MB in the beginning and 90.7 MB in the end (delta: 45.1 MB). Free memory was 22.7 MB in the beginning and 32.4 MB in the end (delta: -9.6 MB). Peak memory consumption was 35.4 MB. Max. memory is 14.3 GB. * Witness Printer took 4.24 ms. Allocated memory is still 90.7 MB. Free memory is still 32.4 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. One deterministic module has affine ranking function -1 * j + length and consists of 3 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][arr + i * 4 + -4] and consists of 8 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. One nondeterministic module has affine ranking function unknown-#memory_int-unknown[arr][j * 4 + arr] and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.4s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 7.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 135 SDtfs, 195 SDslu, 110 SDs, 0 SdLazy, 204 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU3 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital140 mio100 ax113 hnf97 lsp83 ukn77 mio100 lsp58 div100 bol100 ite100 ukn100 eq155 hnf90 smp86 dnf100 smp100 tf100 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...