./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-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 0.1.25-906a4fb [2020-10-19 18:46:24,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:46:24,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:46:24,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:46:24,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:46:24,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:46:24,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:46:24,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:46:24,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:46:24,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:46:24,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:46:24,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:46:24,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:46:24,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:46:24,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:46:24,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:46:24,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:46:24,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:46:24,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:46:24,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:46:24,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:46:24,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:46:24,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:46:24,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:46:24,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:46:24,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:46:24,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:46:24,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:46:24,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:46:24,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:46:24,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:46:24,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:46:24,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:46:24,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:46:24,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:46:24,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:46:24,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:46:24,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:46:24,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:46:24,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:46:24,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:46:24,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-19 18:46:24,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:46:24,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:46:24,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:46:24,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:46:24,833 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:46:24,833 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 18:46:24,833 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 18:46:24,834 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 18:46:24,834 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 18:46:24,834 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 18:46:24,835 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 18:46:24,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:46:24,835 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:46:24,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:46:24,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:46:24,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 18:46:24,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 18:46:24,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 18:46:24,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 18:46:24,837 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 18:46:24,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:46:24,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 18:46:24,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:46:24,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:46:24,838 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 18:46:24,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:46:24,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:46:24,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:46:24,840 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 18:46:24,841 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 18:46:24,841 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 [2020-10-19 18:46:25,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:46:25,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:46:25,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:46:25,192 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:46:25,192 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:46:25,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2020-10-19 18:46:25,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e40070cea/7911c33498634d51a0b59d850d464439/FLAG30699be1c [2020-10-19 18:46:25,800 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:46:25,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/count_down-alloca-2.i [2020-10-19 18:46:25,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e40070cea/7911c33498634d51a0b59d850d464439/FLAG30699be1c [2020-10-19 18:46:26,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e40070cea/7911c33498634d51a0b59d850d464439 [2020-10-19 18:46:26,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:46:26,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 18:46:26,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:46:26,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:46:26,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:46:26,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28684e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26, skipping insertion in model container [2020-10-19 18:46:26,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:46:26,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:46:26,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:46:26,540 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:46:26,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:46:26,637 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:46:26,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26 WrapperNode [2020-10-19 18:46:26,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:46:26,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 18:46:26,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 18:46:26,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 18:46:26,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 18:46:26,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:46:26,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:46:26,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:46:26,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... [2020-10-19 18:46:26,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:46:26,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:46:26,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:46:26,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:46:26,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:26,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:46:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:46:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:46:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:46:26,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:46:26,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:46:27,094 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:46:27,094 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 18:46:27,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:46:27 BoogieIcfgContainer [2020-10-19 18:46:27,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:46:27,097 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 18:46:27,097 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 18:46:27,101 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 18:46:27,102 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:46:27,102 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 06:46:26" (1/3) ... [2020-10-19 18:46:27,103 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33824154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:46:27, skipping insertion in model container [2020-10-19 18:46:27,104 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:46:27,104 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:46:26" (2/3) ... [2020-10-19 18:46:27,104 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33824154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 06:46:27, skipping insertion in model container [2020-10-19 18:46:27,104 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 18:46:27,105 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:46:27" (3/3) ... [2020-10-19 18:46:27,109 INFO L373 chiAutomizerObserver]: Analyzing ICFG count_down-alloca-2.i [2020-10-19 18:46:27,196 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 18:46:27,197 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 18:46:27,197 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 18:46:27,197 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:46:27,197 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:46:27,197 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 18:46:27,197 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:46:27,198 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 18:46:27,213 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-19 18:46:27,235 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 18:46:27,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:27,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:27,243 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 18:46:27,243 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:46:27,243 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 18:46:27,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-19 18:46:27,245 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-19 18:46:27,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:27,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:27,246 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-19 18:46:27,246 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:46:27,255 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L551true assume !(main_~length~0 < 1); 18#L551-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 9#L553true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 13#L554-3true [2020-10-19 18:46:27,255 INFO L796 eck$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 [2020-10-19 18:46:27,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:27,262 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-10-19 18:46:27,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:27,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077586802] [2020-10-19 18:46:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:27,373 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:27,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:27,405 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1603878, now seen corresponding path program 1 times [2020-10-19 18:46:27,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:27,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161529538] [2020-10-19 18:46:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:27,419 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:27,428 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:27,431 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:27,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:27,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1182970350, now seen corresponding path program 1 times [2020-10-19 18:46:27,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:27,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962002141] [2020-10-19 18:46:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:27,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:27,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:27,477 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:27,724 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:46:27,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:46:27,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:46:27,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:46:27,725 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:46:27,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:27,726 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:46:27,726 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:46:27,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration1_Lasso [2020-10-19 18:46:27,726 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:46:27,727 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:46:27,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:27,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:28,221 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:46:28,227 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) [2020-10-19 18:46:28,234 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,237 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:28,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:28,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:28,244 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:28,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:28,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:28,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:28,293 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:28,330 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:28,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:28,334 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 [2020-10-19 18:46:28,336 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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:28,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,362 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,362 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:28,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:28,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:28,368 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:28,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:28,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:28,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:28,400 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:28,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:28,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:28,442 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 [2020-10-19 18:46:28,479 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,487 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:28,487 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:28,498 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 [2020-10-19 18:46:28,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:28,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:28,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:28,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:28,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:28,532 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:28,533 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:28,547 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:46:28,586 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-10-19 18:46:28,586 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 [2020-10-19 18:46:28,598 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:46:28,604 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:46:28,605 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:46:28,606 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 [] [2020-10-19 18:46:28,652 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 18:46:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:28,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:46:28,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:28,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:46:28,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:28,776 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:46:28,778 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 3 states. [2020-10-19 18:46:28,848 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. [2020-10-19 18:46:28,849 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 [2020-10-19 18:46:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:46:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-10-19 18:46:28,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 4 letters. [2020-10-19 18:46:28,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:28,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-19 18:46:28,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:28,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 5 letters. Loop has 8 letters. [2020-10-19 18:46:28,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:28,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 60 transitions. [2020-10-19 18:46:28,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:46:28,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 15 states and 20 transitions. [2020-10-19 18:46:28,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:46:28,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:46:28,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-10-19 18:46:28,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:46:28,887 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-19 18:46:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-10-19 18:46:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-19 18:46:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 18:46:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2020-10-19 18:46:28,916 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-19 18:46:28,916 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-10-19 18:46:28,916 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 18:46:28,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2020-10-19 18:46:28,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:46:28,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:28,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:28,918 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:46:28,918 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:46:28,919 INFO L794 eck$LassoCheckResult]: Stem: 136#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 133#L551 assume !(main_~length~0 < 1); 138#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 134#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 135#L554-3 assume !(main_~i~0 < main_~length~0); 139#L554-4 main_~j~0 := 0; 127#L561-3 [2020-10-19 18:46:28,919 INFO L796 eck$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 [2020-10-19 18:46:28,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:28,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815512, now seen corresponding path program 1 times [2020-10-19 18:46:28,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:28,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136945506] [2020-10-19 18:46:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:28,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136945506] [2020-10-19 18:46:28,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:46:28,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:46:28,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809286476] [2020-10-19 18:46:28,992 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:46:28,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:28,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 1 times [2020-10-19 18:46:28,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:28,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358554283] [2020-10-19 18:46:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,009 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:29,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:46:29,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:46:29,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:46:29,051 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2020-10-19 18:46:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:46:29,086 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-10-19 18:46:29,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:46:29,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 23 transitions. [2020-10-19 18:46:29,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:46:29,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 23 transitions. [2020-10-19 18:46:29,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-10-19 18:46:29,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:46:29,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2020-10-19 18:46:29,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:46:29,091 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2020-10-19 18:46:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2020-10-19 18:46:29,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2020-10-19 18:46:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-19 18:46:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-10-19 18:46:29,093 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-19 18:46:29,093 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-10-19 18:46:29,094 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 18:46:29,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-10-19 18:46:29,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-10-19 18:46:29,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:29,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:29,095 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:46:29,096 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-19 18:46:29,096 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 [2020-10-19 18:46:29,096 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 [2020-10-19 18:46:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:29,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1329979393, now seen corresponding path program 1 times [2020-10-19 18:46:29,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:29,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682272381] [2020-10-19 18:46:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,112 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,140 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2252300, now seen corresponding path program 2 times [2020-10-19 18:46:29,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:29,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277508185] [2020-10-19 18:46:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2035265782, now seen corresponding path program 1 times [2020-10-19 18:46:29,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:29,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767138553] [2020-10-19 18:46:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:29,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:29,244 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:29,407 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-19 18:46:29,460 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:46:29,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:46:29,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:46:29,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:46:29,461 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:46:29,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:29,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:46:29,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:46:29,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration3_Lasso [2020-10-19 18:46:29,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:46:29,462 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:46:29,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:29,905 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:46:29,905 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:29,915 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:29,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:29,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:29,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:29,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:29,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:29,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:29,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:29,923 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:29,975 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:29,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:29,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:29,977 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:29,977 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:29,977 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:29,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:29,981 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 [2020-10-19 18:46:29,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:30,030 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:30,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:30,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:30,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:30,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:30,036 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:30,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,042 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:30,086 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:30,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:30,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:30,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:30,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:30,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:30,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:30,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:30,136 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:30,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:30,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:30,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:30,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:30,143 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:30,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,147 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) [2020-10-19 18:46:30,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:30,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:30,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:30,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:30,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,201 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:30,201 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:30,207 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,241 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 [2020-10-19 18:46:30,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:30,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:30,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:30,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:30,245 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:30,246 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:30,249 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:30,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:30,289 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:30,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:30,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:30,293 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:30,293 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:30,299 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:30,344 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:30,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:30,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:30,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:30,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:30,352 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:30,352 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,365 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:46:30,410 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2020-10-19 18:46:30,411 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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,414 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:46:30,419 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:46:30,419 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:46:30,419 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-10-19 18:46:30,448 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 18:46:30,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:30,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:46:30,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:30,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:46:30,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:30,510 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:46:30,510 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 6 Second operand 3 states. [2020-10-19 18:46:30,526 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. [2020-10-19 18:46:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-19 18:46:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:46:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 18 transitions. [2020-10-19 18:46:30,527 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2020-10-19 18:46:30,527 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:30,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 15 letters. Loop has 4 letters. [2020-10-19 18:46:30,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:30,528 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 18 transitions. Stem has 11 letters. Loop has 8 letters. [2020-10-19 18:46:30,528 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:30,528 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2020-10-19 18:46:30,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:30,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 25 transitions. [2020-10-19 18:46:30,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:46:30,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-10-19 18:46:30,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2020-10-19 18:46:30,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:46:30,531 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-10-19 18:46:30,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2020-10-19 18:46:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-19 18:46:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-19 18:46:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2020-10-19 18:46:30,533 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-19 18:46:30,534 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2020-10-19 18:46:30,534 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 18:46:30,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2020-10-19 18:46:30,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:30,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:30,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:30,535 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:46:30,535 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:46:30,536 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 [2020-10-19 18:46:30,536 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~post9;havoc main_#t~mem8; 281#L562-3 [2020-10-19 18:46:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1720311820, now seen corresponding path program 1 times [2020-10-19 18:46:30,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:30,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985780752] [2020-10-19 18:46:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:30,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:30,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:30,563 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:30,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:30,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 1 times [2020-10-19 18:46:30,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:30,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482635328] [2020-10-19 18:46:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:30,568 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:30,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:30,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:30,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:30,579 INFO L82 PathProgramCache]: Analyzing trace with hash -342748399, now seen corresponding path program 1 times [2020-10-19 18:46:30,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:30,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799325623] [2020-10-19 18:46:30,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:30,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:30,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:30,614 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:30,781 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-19 18:46:30,827 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:46:30,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:46:30,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:46:30,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:46:30,828 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:46:30,828 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:30,828 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:46:30,828 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:46:30,828 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration4_Lasso [2020-10-19 18:46:30,828 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:46:30,828 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:46:30,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:30,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:30,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:30,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:30,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:30,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:30,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:30,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:31,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:31,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:31,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:31,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:31,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:31,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:31,308 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:46:31,308 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) [2020-10-19 18:46:31,325 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:31,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:31,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:31,337 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 [2020-10-19 18:46:31,365 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:31,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,368 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:31,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:31,370 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 [2020-10-19 18:46:31,394 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,398 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:31,398 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:31,401 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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:31,441 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:31,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,443 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,443 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:31,443 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:31,445 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 [2020-10-19 18:46:31,466 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,470 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:31,470 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:31,474 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:31,508 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:31,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:31,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:31,511 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:31,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,538 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:31,538 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:31,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:31,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:31,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:31,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:31,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:31,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:31,570 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:31,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:31,583 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:46:31,608 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-10-19 18:46:31,609 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) [2020-10-19 18:46:31,613 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 [2020-10-19 18:46:31,615 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-19 18:46:31,616 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:46:31,616 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 [] [2020-10-19 18:46:31,648 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 18:46:31,651 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 18:46:31,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:31,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:46:31,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:31,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:46:31,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:31,769 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 [2020-10-19 18:46:31,769 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand 6 states. [2020-10-19 18:46:31,882 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. [2020-10-19 18:46:31,883 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 [2020-10-19 18:46:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 18:46:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 30 transitions. [2020-10-19 18:46:31,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 2 letters. [2020-10-19 18:46:31,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:31,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 14 letters. Loop has 2 letters. [2020-10-19 18:46:31,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:31,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 30 transitions. Stem has 12 letters. Loop has 4 letters. [2020-10-19 18:46:31,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:31,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 51 transitions. [2020-10-19 18:46:31,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:31,889 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 34 states and 44 transitions. [2020-10-19 18:46:31,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-19 18:46:31,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-19 18:46:31,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 44 transitions. [2020-10-19 18:46:31,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:46:31,889 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-10-19 18:46:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 44 transitions. [2020-10-19 18:46:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-19 18:46:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-19 18:46:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2020-10-19 18:46:31,893 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-19 18:46:31,893 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2020-10-19 18:46:31,893 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 18:46:31,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2020-10-19 18:46:31,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:31,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:31,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:31,900 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:46:31,900 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:46:31,901 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 [2020-10-19 18:46:31,902 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~post9;havoc main_#t~mem8; 441#L562-3 [2020-10-19 18:46:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:31,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1331270241, now seen corresponding path program 2 times [2020-10-19 18:46:31,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:31,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099714436] [2020-10-19 18:46:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:31,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099714436] [2020-10-19 18:46:31,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459975878] [2020-10-19 18:46:31,983 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 [2020-10-19 18:46:32,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-19 18:46:32,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 18:46:32,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:46:32,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:32,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:46:32,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-10-19 18:46:32,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318858586] [2020-10-19 18:46:32,076 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:46:32,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:32,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 2 times [2020-10-19 18:46:32,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:32,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752889363] [2020-10-19 18:46:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,089 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:32,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:46:32,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:46:32,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:46:32,117 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand 10 states. [2020-10-19 18:46:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:46:32,258 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2020-10-19 18:46:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:46:32,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 64 transitions. [2020-10-19 18:46:32,261 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-10-19 18:46:32,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 40 states and 51 transitions. [2020-10-19 18:46:32,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-10-19 18:46:32,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-19 18:46:32,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2020-10-19 18:46:32,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:46:32,263 INFO L691 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-19 18:46:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2020-10-19 18:46:32,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-19 18:46:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-19 18:46:32,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-19 18:46:32,267 INFO L714 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:46:32,267 INFO L594 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-19 18:46:32,267 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 18:46:32,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2020-10-19 18:46:32,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:32,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:32,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:32,270 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:46:32,270 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:46:32,271 INFO L794 eck$LassoCheckResult]: Stem: 593#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 589#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_#t~mem8, main_#t~post9, main_#t~mem7, main_#t~post6, main_~i~0, main_~j~0, main_~val~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;havoc main_~val~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 590#L551 assume main_~length~0 < 1;main_~length~0 := 1; 595#L551-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 615#L553 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 597#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 598#L556 assume !(main_~val~0 < 0); 613#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 612#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 611#L554-3 assume !!(main_~i~0 < main_~length~0);main_~val~0 := main_#t~nondet5;havoc main_#t~nondet5; 608#L556 assume !(main_~val~0 < 0); 610#L556-2 call write~int(main_~val~0, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 609#L554-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 607#L554-3 assume !(main_~i~0 < main_~length~0); 602#L554-4 main_~j~0 := 0; 581#L561-3 assume !!(main_~j~0 < main_~length~0); 582#L562-3 [2020-10-19 18:46:32,271 INFO L796 eck$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~post9;havoc main_#t~mem8; 582#L562-3 [2020-10-19 18:46:32,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:32,271 INFO L82 PathProgramCache]: Analyzing trace with hash -420071865, now seen corresponding path program 1 times [2020-10-19 18:46:32,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:32,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076074604] [2020-10-19 18:46:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:32,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076074604] [2020-10-19 18:46:32,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687906474] [2020-10-19 18:46:32,311 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 [2020-10-19 18:46:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:32,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:46:32,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:32,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 18:46:32,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-10-19 18:46:32,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959715875] [2020-10-19 18:46:32,389 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 18:46:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 3 times [2020-10-19 18:46:32,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:32,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591559563] [2020-10-19 18:46:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:32,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:46:32,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:46:32,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:46:32,439 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. cyclomatic complexity: 14 Second operand 5 states. [2020-10-19 18:46:32,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:46:32,464 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-10-19 18:46:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:46:32,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2020-10-19 18:46:32,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:32,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 28 transitions. [2020-10-19 18:46:32,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:46:32,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 18:46:32,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 28 transitions. [2020-10-19 18:46:32,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:46:32,467 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-19 18:46:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 28 transitions. [2020-10-19 18:46:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-19 18:46:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-19 18:46:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-10-19 18:46:32,470 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-19 18:46:32,470 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-10-19 18:46:32,470 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 18:46:32,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 28 transitions. [2020-10-19 18:46:32,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:32,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:32,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:32,472 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:46:32,472 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:46:32,472 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 [2020-10-19 18:46:32,472 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~post9;havoc main_#t~mem8; 701#L562-3 [2020-10-19 18:46:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1431189115, now seen corresponding path program 2 times [2020-10-19 18:46:32,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:32,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25182637] [2020-10-19 18:46:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,499 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 4 times [2020-10-19 18:46:32,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:32,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104715935] [2020-10-19 18:46:32,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,504 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,508 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:32,508 INFO L82 PathProgramCache]: Analyzing trace with hash -983203254, now seen corresponding path program 2 times [2020-10-19 18:46:32,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:32,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854456001] [2020-10-19 18:46:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:32,537 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:32,541 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:32,787 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-10-19 18:46:32,854 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:46:32,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:46:32,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:46:32,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:46:32,855 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:46:32,855 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:32,855 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:46:32,855 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:46:32,855 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration7_Lasso [2020-10-19 18:46:32,855 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:46:32,856 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:46:32,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:32,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:32,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:32,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:32,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:32,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:32,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:32,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:33,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:33,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:33,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:33,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:33,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:33,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:33,270 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:46:33,271 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 [2020-10-19 18:46:33,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:33,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:33,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:33,278 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:33,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:33,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:33,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:33,304 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:33,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,331 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:33,331 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:33,335 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 [2020-10-19 18:46:33,359 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:33,362 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:33,366 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 [2020-10-19 18:46:33,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:33,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:33,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:33,400 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 [2020-10-19 18:46:33,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:33,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:33,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:33,431 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 [2020-10-19 18:46:33,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:33,455 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:33,458 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 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 [2020-10-19 18:46:33,483 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,488 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:33,488 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:33,496 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 [2020-10-19 18:46:33,518 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,524 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:33,524 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:33,536 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 [2020-10-19 18:46:33,562 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,565 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:33,565 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:33,568 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 [2020-10-19 18:46:33,596 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,597 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,597 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,598 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,598 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:33,599 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:33,605 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 [2020-10-19 18:46:33,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:33,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:33,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:33,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:33,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:33,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:33,630 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:33,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:33,632 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:46:33,634 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:46:33,635 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 18:46:33,637 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:46:33,637 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:46:33,638 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:46:33,638 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~arr~0.base) (+ (* ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~arr~0.offset))_3 Supporting invariants [] Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:33,669 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-19 18:46:33,670 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 18:46:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:33,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:46:33,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:33,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:46:33,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:33,712 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:46:33,712 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 28 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-10-19 18:46:33,728 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. [2020-10-19 18:46:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:46:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:46:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-19 18:46:33,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 2 letters. [2020-10-19 18:46:33,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:33,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 18 letters. Loop has 2 letters. [2020-10-19 18:46:33,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:33,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2020-10-19 18:46:33,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:33,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-19 18:46:33,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:33,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 32 transitions. [2020-10-19 18:46:33,732 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-10-19 18:46:33,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-10-19 18:46:33,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 32 transitions. [2020-10-19 18:46:33,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 18:46:33,732 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-19 18:46:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 32 transitions. [2020-10-19 18:46:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-10-19 18:46:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-19 18:46:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-10-19 18:46:33,735 INFO L714 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-19 18:46:33,735 INFO L594 BuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-10-19 18:46:33,735 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 18:46:33,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2020-10-19 18:46:33,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-10-19 18:46:33,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 18:46:33,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 18:46:33,737 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:46:33,737 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-10-19 18:46:33,737 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 [2020-10-19 18:46:33,737 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~post9;havoc main_#t~mem8; 846#L562-3 [2020-10-19 18:46:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:33,737 INFO L82 PathProgramCache]: Analyzing trace with hash 34477914, now seen corresponding path program 3 times [2020-10-19 18:46:33,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:33,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446183299] [2020-10-19 18:46:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:33,762 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:33,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:33,797 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:33,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2502, now seen corresponding path program 5 times [2020-10-19 18:46:33,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:33,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018040040] [2020-10-19 18:46:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:33,808 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:33,814 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:33,817 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:33,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1226461473, now seen corresponding path program 1 times [2020-10-19 18:46:33,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:46:33,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112110797] [2020-10-19 18:46:33,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:46:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:33,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:46:33,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:46:33,881 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:46:34,155 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2020-10-19 18:46:34,234 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 18:46:34,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 18:46:34,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 18:46:34,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 18:46:34,235 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 18:46:34,235 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:34,235 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 18:46:34,235 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 18:46:34,235 INFO L133 ssoRankerPreferences]: Filename of dumped script: count_down-alloca-2.i_Iteration8_Lasso [2020-10-19 18:46:34,235 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 18:46:34,235 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 18:46:34,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 18:46:34,643 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 18:46:34,643 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 [2020-10-19 18:46:34,651 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:34,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:34,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:34,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:34,655 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) [2020-10-19 18:46:34,681 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:34,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,682 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:34,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:34,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:34,684 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 [2020-10-19 18:46:34,715 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 [2020-10-19 18:46:34,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:34,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:34,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 18:46:34,719 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 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 [2020-10-19 18:46:34,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:34,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,748 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:34,749 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:34,753 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 [2020-10-19 18:46:34,776 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:34,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,782 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:34,782 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:34,794 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 [2020-10-19 18:46:34,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:34,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,821 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:34,821 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:34,825 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) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 18:46:34,849 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:34,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,859 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-19 18:46:34,859 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-19 18:46:34,865 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) [2020-10-19 18:46:34,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 18:46:34,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 18:46:34,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 18:46:34,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 18:46:34,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 18:46:34,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 18:46:34,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 18:46:34,902 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 [2020-10-19 18:46:34,912 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 18:46:34,915 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 18:46:34,915 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) [2020-10-19 18:46:34,918 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 18:46:34,919 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 18:46:34,919 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 18:46:34,919 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 [2020-10-19 18:46:34,958 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2020-10-19 18:46:34,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-19 18:46:34,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:34,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:46:34,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:34,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:46:34,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:35,009 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:46:35,009 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-19 18:46:35,029 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. [2020-10-19 18:46:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:46:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:46:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-19 18:46:35,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-19 18:46:35,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:35,035 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:46:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:35,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:46:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:35,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:46:35,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:35,084 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:46:35,084 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-19 18:46:35,102 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. [2020-10-19 18:46:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:46:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:46:35,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-10-19 18:46:35,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-19 18:46:35,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:35,105 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 18:46:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:46:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:35,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 18:46:35,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:46:35,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:46:35,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:46:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:46:35,152 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-10-19 18:46:35,152 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 10 Second operand 3 states. [2020-10-19 18:46:35,171 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. [2020-10-19 18:46:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-19 18:46:35,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-19 18:46:35,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-10-19 18:46:35,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 2 letters. [2020-10-19 18:46:35,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:35,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 22 letters. Loop has 2 letters. [2020-10-19 18:46:35,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:35,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 20 letters. Loop has 4 letters. [2020-10-19 18:46:35,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 18:46:35,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 39 transitions. [2020-10-19 18:46:35,175 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:46:35,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-19 18:46:35,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 18:46:35,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 18:46:35,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 18:46:35,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 18:46:35,176 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:46:35,176 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:46:35,176 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 18:46:35,176 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-19 18:46:35,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 18:46:35,176 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 18:46:35,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 18:46:35,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 06:46:35 BoogieIcfgContainer [2020-10-19 18:46:35,183 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 18:46:35,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:46:35,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:46:35,184 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:46:35,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:46:27" (3/4) ... [2020-10-19 18:46:35,188 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:46:35,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:46:35,190 INFO L168 Benchmark]: Toolchain (without parser) took 9111.64 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 308.8 MB). Free memory was 960.0 MB in the beginning and 902.5 MB in the end (delta: 57.5 MB). Peak memory consumption was 366.3 MB. Max. memory is 11.5 GB. [2020-10-19 18:46:35,191 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:46:35,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -145.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:46:35,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:46:35,193 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:46:35,193 INFO L168 Benchmark]: RCFGBuilder took 380.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:46:35,194 INFO L168 Benchmark]: BuchiAutomizer took 8086.29 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 191.4 MB). Free memory was 1.1 GB in the beginning and 902.5 MB in the end (delta: 170.0 MB). Peak memory consumption was 361.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:46:35,194 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 1.3 GB. Free memory is still 902.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:46:35,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 553.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -145.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 380.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8086.29 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 191.4 MB). Free memory was 1.1 GB in the beginning and 902.5 MB in the end (delta: 170.0 MB). Peak memory consumption was 361.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.86 ms. Allocated memory is still 1.3 GB. Free memory is still 902.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #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 7.9s and 9 iterations. TraceHistogramMax:2. Analysis of lassos took 6.8s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 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: 18ms 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...