./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.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 a96be28be4b50f026536d78db5ba85eeb0ae4413 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:43:53,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:43:53,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:43:53,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:43:53,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:43:53,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:43:53,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:43:53,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:43:53,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:43:53,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:43:53,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:43:53,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:43:53,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:43:53,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:43:53,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:43:53,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:43:53,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:43:53,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:43:53,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:43:53,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:43:53,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:43:53,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:43:53,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:43:53,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:43:53,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:43:53,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:43:53,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:43:53,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:43:53,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:43:53,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:43:53,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:43:53,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:43:53,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:43:53,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:43:53,540 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:43:53,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:43:53,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:43:53,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:43:53,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:43:53,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:43:53,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:43:53,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:43:53,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:43:53,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:43:53,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:43:53,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:43:53,572 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:43:53,572 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:43:53,573 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:43:53,573 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:43:53,573 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:43:53,573 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:43:53,574 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:43:53,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:43:53,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:43:53,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:43:53,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:43:53,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:43:53,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:43:53,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:43:53,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:43:53,576 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:43:53,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:43:53,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:43:53,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:43:53,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:43:53,577 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:43:53,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:43:53,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:43:53,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:43:53,578 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:43:53,579 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:43:53,579 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 -> a96be28be4b50f026536d78db5ba85eeb0ae4413 [2020-10-20 06:43:53,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:43:53,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:43:53,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:43:53,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:43:53,802 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:43:53,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i [2020-10-20 06:43:53,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a721c8758/fa3f01a5ed9f470da874a653e29b5c54/FLAG843f4b5b3 [2020-10-20 06:43:54,311 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:43:54,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex3.i [2020-10-20 06:43:54,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a721c8758/fa3f01a5ed9f470da874a653e29b5c54/FLAG843f4b5b3 [2020-10-20 06:43:54,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a721c8758/fa3f01a5ed9f470da874a653e29b5c54 [2020-10-20 06:43:54,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:43:54,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:43:54,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:43:54,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:43:54,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:43:54,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:43:54" (1/1) ... [2020-10-20 06:43:54,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4182a675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:54, skipping insertion in model container [2020-10-20 06:43:54,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:43:54" (1/1) ... [2020-10-20 06:43:54,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:43:54,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:43:54,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:43:54,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:43:54,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:43:55,005 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:43:55,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55 WrapperNode [2020-10-20 06:43:55,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:43:55,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:43:55,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:43:55,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:43:55,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:43:55,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:43:55,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:43:55,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:43:55,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... [2020-10-20 06:43:55,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:43:55,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:43:55,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:43:55,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:43:55,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:43:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-10-20 06:43:55,175 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-10-20 06:43:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:43:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:43:55,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:43:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:43:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:43:55,435 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:43:55,436 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-20 06:43:55,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:55 BoogieIcfgContainer [2020-10-20 06:43:55,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:43:55,438 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:43:55,438 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:43:55,445 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:43:55,448 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:55,448 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:43:54" (1/3) ... [2020-10-20 06:43:55,450 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1060572b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:43:55, skipping insertion in model container [2020-10-20 06:43:55,450 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:55,450 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:43:55" (2/3) ... [2020-10-20 06:43:55,451 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1060572b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:43:55, skipping insertion in model container [2020-10-20 06:43:55,451 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:43:55,451 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:55" (3/3) ... [2020-10-20 06:43:55,453 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex3.i [2020-10-20 06:43:55,569 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:43:55,569 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:43:55,569 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:43:55,569 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:43:55,570 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:43:55,570 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:43:55,570 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:43:55,570 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:43:55,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-20 06:43:55,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:43:55,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:55,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:55,635 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:43:55,635 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:43:55,635 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:43:55,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-10-20 06:43:55,639 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:43:55,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:55,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:55,640 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 06:43:55,640 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:43:55,648 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 5#L20-2true [2020-10-20 06:43:55,649 INFO L796 eck$LassoCheckResult]: Loop: 5#L20-2true assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 13#L23true call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 4#recENTRYtrue ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 9#L9true assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 15#recFINALtrue assume true; 12#recEXITtrue >#30#return; 11#L23-1true main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 5#L20-2true [2020-10-20 06:43:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:55,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2020-10-20 06:43:55,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:55,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813436886] [2020-10-20 06:43:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:55,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:55,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:55,779 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:55,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:55,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2039113776, now seen corresponding path program 1 times [2020-10-20 06:43:55,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:55,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081538231] [2020-10-20 06:43:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:55,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:55,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:55,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:55,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:55,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1009969970, now seen corresponding path program 1 times [2020-10-20 06:43:55,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:55,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437560828] [2020-10-20 06:43:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:55,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:55,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:55,910 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:56,355 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-20 06:43:56,512 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:43:56,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:43:56,514 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:43:56,514 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:43:56,514 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:43:56,514 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:56,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:43:56,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:43:56,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration1_Lasso [2020-10-20 06:43:56,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:43:56,516 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:43:56,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:56,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:56,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:56,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:56,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:56,694 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-20 06:43:56,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:56,918 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:43:56,923 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:56,932 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:56,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:56,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:56,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:56,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:56,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:56,941 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:56,942 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:56,946 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:56,987 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:56,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:56,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:56,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:56,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:56,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:56,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:56,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:56,996 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:57,045 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:57,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:57,047 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:57,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:57,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:57,052 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:57,052 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:57,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-20 06:43:57,100 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:57,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:57,103 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:57,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:57,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:57,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:57,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:57,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:57,106 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:57,156 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:57,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:57,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:57,159 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:43:57,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:57,179 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2020-10-20 06:43:57,180 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-20 06:43:57,207 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:57,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:57,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:57,270 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:57,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:57,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:57,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:57,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:57,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:57,279 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:57,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:57,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:57,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:57,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:57,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:57,345 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:57,345 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:57,354 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:57,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:57,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:57,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:57,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:57,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:57,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:57,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:57,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:57,427 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:57,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:57,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:57,474 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:57,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:57,475 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:57,475 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:57,477 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:57,477 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:57,481 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:43:57,490 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 06:43:57,490 INFO L444 ModelExtractionUtils]: 2 out of 5 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:57,496 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:43:57,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 06:43:57,497 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:43:57,498 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-20 06:43:57,533 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 06:43:57,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:57,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:43:57,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:43:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:57,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:43:57,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:43:57,694 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:43:57,696 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:43:57,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:43:57,703 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:43:57,703 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-20 06:43:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:43:57,816 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2020-10-20 06:43:57,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 7 states. [2020-10-20 06:43:57,958 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 7 states. Result 63 states and 77 transitions. Complement of second has 22 states. [2020-10-20 06:43:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-10-20 06:43:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-20 06:43:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 22 transitions. [2020-10-20 06:43:57,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 22 transitions. Stem has 2 letters. Loop has 7 letters. [2020-10-20 06:43:57,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:57,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 22 transitions. Stem has 9 letters. Loop has 7 letters. [2020-10-20 06:43:57,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:57,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 22 transitions. Stem has 2 letters. Loop has 14 letters. [2020-10-20 06:43:57,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:43:57,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 77 transitions. [2020-10-20 06:43:57,978 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:43:57,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 35 states and 42 transitions. [2020-10-20 06:43:57,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-10-20 06:43:57,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2020-10-20 06:43:57,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 42 transitions. [2020-10-20 06:43:57,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:43:57,991 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-10-20 06:43:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 42 transitions. [2020-10-20 06:43:58,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-20 06:43:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:43:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-20 06:43:58,033 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-20 06:43:58,034 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-20 06:43:58,034 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:43:58,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 38 transitions. [2020-10-20 06:43:58,036 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:43:58,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:43:58,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:43:58,037 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:43:58,037 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:43:58,038 INFO L794 eck$LassoCheckResult]: Stem: 166#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 161#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 162#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 174#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 175#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 185#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 156#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 164#recENTRY [2020-10-20 06:43:58,038 INFO L796 eck$LassoCheckResult]: Loop: 164#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 154#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 155#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 164#recENTRY [2020-10-20 06:43:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:58,038 INFO L82 PathProgramCache]: Analyzing trace with hash 557607690, now seen corresponding path program 1 times [2020-10-20 06:43:58,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:58,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065627916] [2020-10-20 06:43:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:58,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:58,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:58,083 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:58,084 INFO L82 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2020-10-20 06:43:58,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:58,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412976092] [2020-10-20 06:43:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:58,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:58,098 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:58,101 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:58,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:58,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1242807987, now seen corresponding path program 2 times [2020-10-20 06:43:58,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:43:58,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201778817] [2020-10-20 06:43:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:43:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:58,124 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:43:58,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:43:58,184 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:43:58,627 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-20 06:43:58,920 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-20 06:43:58,976 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:43:58,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:43:58,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:43:58,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:43:58,977 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:43:58,977 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:58,977 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:43:58,977 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:43:58,978 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration2_Lasso [2020-10-20 06:43:58,978 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:43:58,978 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:43:58,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:58,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:58,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:58,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:58,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:58,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:58,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:43:59,370 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:43:59,371 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:59,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:59,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:59,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,392 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:59,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:59,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:59,433 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,466 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,466 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:59,466 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:59,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:59,469 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) [2020-10-20 06:43:59,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:59,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:59,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,522 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,557 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,558 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:59,559 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:43:59,569 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,615 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,616 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,616 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:43:59,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:43:59,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:43:59,619 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:59,671 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,677 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:59,677 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,683 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:43:59,725 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,727 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2020-10-20 06:43:59,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,730 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2020-10-20 06:43:59,731 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:43:59,739 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:43:59,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:43:59,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:43:59,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:43:59,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:43:59,779 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:43:59,779 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:43:59,786 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:43:59,803 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-10-20 06:43:59,804 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 2 variables to zero. 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) [2020-10-20 06:43:59,812 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:43:59,815 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:43:59,815 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:43:59,815 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int rec_#in~p.base) rec_#in~p.offset)_1) = 2*v_rep(select (select #memory_int rec_#in~p.base) rec_#in~p.offset)_1 + 1 Supporting invariants [] [2020-10-20 06:43:59,853 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2020-10-20 06:43:59,858 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:43:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:43:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:59,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:43:59,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:43:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:43:59,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:43:59,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:00,021 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2020-10-20 06:44:00,022 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:00,030 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:00,030 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:00,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2020-10-20 06:44:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:00,044 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 06:44:00,044 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 38 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-10-20 06:44:00,131 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 38 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 47 states and 56 transitions. Complement of second has 17 states. [2020-10-20 06:44:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 06:44:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2020-10-20 06:44:00,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 7 letters. Loop has 3 letters. [2020-10-20 06:44:00,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:00,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 10 letters. Loop has 3 letters. [2020-10-20 06:44:00,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:00,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 7 letters. Loop has 6 letters. [2020-10-20 06:44:00,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:00,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 56 transitions. [2020-10-20 06:44:00,142 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:44:00,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 50 transitions. [2020-10-20 06:44:00,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2020-10-20 06:44:00,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2020-10-20 06:44:00,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 50 transitions. [2020-10-20 06:44:00,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:44:00,150 INFO L691 BuchiCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-20 06:44:00,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 50 transitions. [2020-10-20 06:44:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-20 06:44:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 06:44:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-20 06:44:00,156 INFO L714 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-20 06:44:00,156 INFO L594 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-20 06:44:00,157 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 06:44:00,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 46 transitions. [2020-10-20 06:44:00,158 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-10-20 06:44:00,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:44:00,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:44:00,159 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:44:00,160 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:44:00,160 INFO L794 eck$LassoCheckResult]: Stem: 317#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 310#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 311#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 329#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 339#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 338#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 309#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 314#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 315#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 343#recFINAL assume true; 322#recEXIT >#28#return; 323#L15-1 #res := #t~ret5;havoc #t~ret5; 337#recFINAL assume true; 332#recEXIT >#30#return; 318#L23-1 [2020-10-20 06:44:00,160 INFO L796 eck$LassoCheckResult]: Loop: 318#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 319#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 326#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 327#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 334#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 336#recFINAL assume true; 341#recEXIT >#30#return; 318#L23-1 [2020-10-20 06:44:00,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:00,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1969157627, now seen corresponding path program 1 times [2020-10-20 06:44:00,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:00,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430226516] [2020-10-20 06:44:00,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:00,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:00,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:00,202 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash -523709736, now seen corresponding path program 2 times [2020-10-20 06:44:00,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:00,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857181743] [2020-10-20 06:44:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:00,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:00,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:00,224 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:00,225 INFO L82 PathProgramCache]: Analyzing trace with hash 931270558, now seen corresponding path program 1 times [2020-10-20 06:44:00,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:00,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534210455] [2020-10-20 06:44:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:00,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:00,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:00,299 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:00,559 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-20 06:44:00,830 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-20 06:44:01,157 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-20 06:44:01,217 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:44:01,218 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:44:01,218 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:44:01,218 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:44:01,218 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:44:01,218 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:01,218 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:44:01,218 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:44:01,218 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration3_Lasso [2020-10-20 06:44:01,218 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:44:01,219 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:44:01,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:01,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:01,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:01,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:01,458 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-20 06:44:01,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:01,825 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:44:01,825 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:01,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:01,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:01,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:01,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:01,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:01,836 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:01,836 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:01,840 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:01,863 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:01,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:01,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:01,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:01,866 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:01,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:01,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:01,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:01,872 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 [2020-10-20 06:44:01,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:01,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:01,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:01,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:01,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:01,899 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:01,899 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:01,902 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) [2020-10-20 06:44:01,924 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:01,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:01,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:01,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:01,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:01,939 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:01,939 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:01,947 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:44:01,962 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-10-20 06:44:01,963 INFO L444 ModelExtractionUtils]: 4 out of 16 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:01,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:44:01,972 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:44:01,972 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:44:01,973 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_#t~ret9, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_#t~ret9 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-20 06:44:02,000 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 06:44:02,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:02,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:44:02,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:02,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:44:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:02,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:44:02,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:02,169 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:44:02,170 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:02,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:02,175 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:02,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-20 06:44:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:02,189 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2020-10-20 06:44:02,190 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 46 transitions. cyclomatic complexity: 11 Second operand 8 states. [2020-10-20 06:44:02,329 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 46 transitions. cyclomatic complexity: 11. Second operand 8 states. Result 130 states and 152 transitions. Complement of second has 21 states. [2020-10-20 06:44:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:44:02,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 26 transitions. [2020-10-20 06:44:02,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 14 letters. Loop has 7 letters. [2020-10-20 06:44:02,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:02,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-20 06:44:02,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:02,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 14 letters. Loop has 14 letters. [2020-10-20 06:44:02,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:02,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 152 transitions. [2020-10-20 06:44:02,340 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:44:02,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 90 states and 105 transitions. [2020-10-20 06:44:02,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2020-10-20 06:44:02,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2020-10-20 06:44:02,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 105 transitions. [2020-10-20 06:44:02,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:44:02,344 INFO L691 BuchiCegarLoop]: Abstraction has 90 states and 105 transitions. [2020-10-20 06:44:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 105 transitions. [2020-10-20 06:44:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-10-20 06:44:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-20 06:44:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2020-10-20 06:44:02,355 INFO L714 BuchiCegarLoop]: Abstraction has 82 states and 96 transitions. [2020-10-20 06:44:02,355 INFO L594 BuchiCegarLoop]: Abstraction has 82 states and 96 transitions. [2020-10-20 06:44:02,355 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 06:44:02,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 96 transitions. [2020-10-20 06:44:02,358 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 06:44:02,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:44:02,358 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:44:02,359 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:44:02,359 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-20 06:44:02,360 INFO L794 eck$LassoCheckResult]: Stem: 613#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 603#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 604#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 633#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 634#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 639#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 629#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 638#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 644#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 641#recFINAL assume true; 637#recEXIT >#28#return; 636#L15-1 #res := #t~ret5;havoc #t~ret5; 635#recFINAL assume true; 632#recEXIT >#30#return; 631#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 618#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 622#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 623#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 673#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 609#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 608#recENTRY [2020-10-20 06:44:02,360 INFO L796 eck$LassoCheckResult]: Loop: 608#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 611#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 610#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 608#recENTRY [2020-10-20 06:44:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:02,360 INFO L82 PathProgramCache]: Analyzing trace with hash -801242957, now seen corresponding path program 2 times [2020-10-20 06:44:02,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:02,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573242774] [2020-10-20 06:44:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:02,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:02,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:02,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:02,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2020-10-20 06:44:02,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:02,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919049585] [2020-10-20 06:44:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:02,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:02,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:02,478 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:02,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1599299332, now seen corresponding path program 3 times [2020-10-20 06:44:02,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:02,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257641130] [2020-10-20 06:44:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:02,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:02,565 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:02,580 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:02,913 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-20 06:44:03,579 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2020-10-20 06:44:04,083 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-20 06:44:04,200 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:44:04,201 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:44:04,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:44:04,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:44:04,201 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:44:04,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:44:04,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:44:04,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration4_Lasso [2020-10-20 06:44:04,201 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:44:04,201 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:44:04,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:04,721 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:44:04,722 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,726 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,728 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,728 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,736 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,763 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,767 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,787 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,789 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,790 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,817 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,840 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,841 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,841 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,842 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,842 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,877 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:04,877 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:04,885 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,909 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,911 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,911 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,911 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,911 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,912 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,913 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,937 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,938 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,938 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,940 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,962 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,966 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:04,989 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:04,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:04,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:04,991 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:04,991 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:04,991 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:04,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:04,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:04,992 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:05,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:05,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:05,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,020 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:05,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:05,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:05,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,045 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:05,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:05,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,046 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:05,046 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:05,047 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,070 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:05,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:05,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:05,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:05,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:05,074 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,103 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:05,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:05,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:05,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:05,106 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:05,108 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:05,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,131 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-10-20 06:44:05,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,134 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2020-10-20 06:44:05,134 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:05,142 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,163 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:05,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:05,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,166 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:05,166 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:05,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,193 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 [2020-10-20 06:44:05,195 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:05,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,197 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:05,198 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:05,205 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,230 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:05,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:05,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:05,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:05,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:05,235 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:05,236 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:05,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:44:05,254 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-10-20 06:44:05,254 INFO L444 ModelExtractionUtils]: 0 out of 10 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:05,256 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:44:05,257 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:44:05,258 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:44:05,258 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int rec_#in~p.base) rec_#in~p.offset)_2) = 2*v_rep(select (select #memory_int rec_#in~p.base) rec_#in~p.offset)_2 + 1 Supporting invariants [] [2020-10-20 06:44:05,279 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2020-10-20 06:44:05,281 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-20 06:44:05,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:05,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:44:05,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:05,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:44:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:05,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:44:05,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:05,413 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2020-10-20 06:44:05,414 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:05,418 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:05,419 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:05,419 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2020-10-20 06:44:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:05,432 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-20 06:44:05,432 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21 Second operand 5 states. [2020-10-20 06:44:05,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21. Second operand 5 states. Result 106 states and 124 transitions. Complement of second has 17 states. [2020-10-20 06:44:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:44:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2020-10-20 06:44:05,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 20 letters. Loop has 3 letters. [2020-10-20 06:44:05,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:05,581 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:44:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:05,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:44:05,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:05,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:44:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:05,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:44:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:05,704 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2020-10-20 06:44:05,705 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:05,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:05,709 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:05,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2020-10-20 06:44:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:05,722 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-20 06:44:05,722 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21 Second operand 5 states. [2020-10-20 06:44:05,827 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21. Second operand 5 states. Result 106 states and 124 transitions. Complement of second has 17 states. [2020-10-20 06:44:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:44:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2020-10-20 06:44:05,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 20 letters. Loop has 3 letters. [2020-10-20 06:44:05,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:05,831 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:44:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:05,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:44:05,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:05,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:44:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:05,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-20 06:44:05,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:05,952 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2020-10-20 06:44:05,953 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:05,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:05,957 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:05,957 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2020-10-20 06:44:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:05,979 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2020-10-20 06:44:05,979 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21 Second operand 5 states. [2020-10-20 06:44:06,103 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 21. Second operand 5 states. Result 154 states and 179 transitions. Complement of second has 19 states. [2020-10-20 06:44:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-20 06:44:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 19 transitions. [2020-10-20 06:44:06,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 20 letters. Loop has 3 letters. [2020-10-20 06:44:06,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:06,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 23 letters. Loop has 3 letters. [2020-10-20 06:44:06,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:06,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 19 transitions. Stem has 20 letters. Loop has 6 letters. [2020-10-20 06:44:06,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:06,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 179 transitions. [2020-10-20 06:44:06,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:44:06,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 110 states and 135 transitions. [2020-10-20 06:44:06,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2020-10-20 06:44:06,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2020-10-20 06:44:06,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 135 transitions. [2020-10-20 06:44:06,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:44:06,116 INFO L691 BuchiCegarLoop]: Abstraction has 110 states and 135 transitions. [2020-10-20 06:44:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 135 transitions. [2020-10-20 06:44:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 74. [2020-10-20 06:44:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 06:44:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2020-10-20 06:44:06,126 INFO L714 BuchiCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-20 06:44:06,126 INFO L594 BuchiCegarLoop]: Abstraction has 74 states and 87 transitions. [2020-10-20 06:44:06,126 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-20 06:44:06,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 87 transitions. [2020-10-20 06:44:06,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-10-20 06:44:06,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:44:06,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:44:06,129 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:44:06,129 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:44:06,130 INFO L794 eck$LassoCheckResult]: Stem: 1363#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1356#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 1357#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 1371#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 1374#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1378#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 1376#recFINAL assume true; 1370#recEXIT >#30#return; 1366#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 1368#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 1372#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 1373#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1400#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 1352#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 1360#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1351#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 1353#recFINAL assume true; 1417#recEXIT >#28#return; 1406#L15-1 #res := #t~ret5;havoc #t~ret5; 1401#recFINAL assume true; 1377#recEXIT >#30#return; 1364#L23-1 [2020-10-20 06:44:06,130 INFO L796 eck$LassoCheckResult]: Loop: 1364#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 1365#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 1403#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 1407#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 1402#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 1404#recFINAL assume true; 1408#recEXIT >#30#return; 1364#L23-1 [2020-10-20 06:44:06,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:06,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1572162950, now seen corresponding path program 4 times [2020-10-20 06:44:06,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:06,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641050915] [2020-10-20 06:44:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:06,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:06,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:06,160 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:06,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:06,161 INFO L82 PathProgramCache]: Analyzing trace with hash -523709736, now seen corresponding path program 3 times [2020-10-20 06:44:06,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:06,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530549159] [2020-10-20 06:44:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:06,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:06,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:06,173 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:06,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1341076915, now seen corresponding path program 5 times [2020-10-20 06:44:06,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:06,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108425456] [2020-10-20 06:44:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:06,190 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:06,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:06,214 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:06,461 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-20 06:44:06,831 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-20 06:44:07,569 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 135 [2020-10-20 06:44:07,719 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-20 06:44:07,720 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:44:07,721 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:44:07,721 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:44:07,721 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:44:07,721 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:44:07,721 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:07,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:44:07,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:44:07,722 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration5_Lasso [2020-10-20 06:44:07,722 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:44:07,722 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:44:07,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:07,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:07,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:07,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:07,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:07,866 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-20 06:44:08,262 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-10-20 06:44:08,383 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:44:08,384 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:08,394 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 [2020-10-20 06:44:08,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:08,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:08,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:08,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:08,396 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:08,396 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:08,400 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:08,422 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:08,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:08,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:08,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:08,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:08,425 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:08,425 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:08,428 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:08,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:08,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:08,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:08,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:08,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:08,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:08,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:08,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:08,452 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:08,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:08,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:08,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:08,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:08,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:08,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:08,476 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:08,477 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:08,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:08,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:08,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:08,500 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-10-20 06:44:08,500 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:44:08,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:08,518 INFO L401 nArgumentSynthesizer]: We have 28 Motzkin's Theorem applications. [2020-10-20 06:44:08,518 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-20 06:44:08,541 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 [2020-10-20 06:44:08,563 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:08,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:08,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:08,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:08,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:08,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:08,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:08,585 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:44:08,599 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-10-20 06:44:08,599 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:08,602 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:44:08,604 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:44:08,604 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:44:08,604 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_#t~ret9, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_#t~ret9 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-20 06:44:08,631 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 06:44:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:44:08,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:08,717 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:44:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:08,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:44:08,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:08,797 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:44:08,798 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:08,804 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:08,804 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:08,804 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-20 06:44:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:08,825 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2020-10-20 06:44:08,825 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18 Second operand 8 states. [2020-10-20 06:44:08,960 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18. Second operand 8 states. Result 118 states and 139 transitions. Complement of second has 21 states. [2020-10-20 06:44:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:44:08,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 26 transitions. [2020-10-20 06:44:08,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-20 06:44:08,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:08,965 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:44:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:09,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:44:09,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:09,052 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:44:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:09,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:44:09,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:09,138 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:44:09,139 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:09,143 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:09,143 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:09,144 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-20 06:44:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:09,158 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2020-10-20 06:44:09,158 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18 Second operand 8 states. [2020-10-20 06:44:09,257 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18. Second operand 8 states. Result 118 states and 139 transitions. Complement of second has 21 states. [2020-10-20 06:44:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:44:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 26 transitions. [2020-10-20 06:44:09,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 26 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-20 06:44:09,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:09,260 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-20 06:44:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:09,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:44:09,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:09,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 06:44:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:09,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:44:09,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:09,423 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:44:09,425 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:09,428 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:09,429 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:09,429 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-20 06:44:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:44:09,445 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2020-10-20 06:44:09,446 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18 Second operand 8 states. [2020-10-20 06:44:09,569 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 87 transitions. cyclomatic complexity: 18. Second operand 8 states. Result 143 states and 169 transitions. Complement of second has 22 states. [2020-10-20 06:44:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:09,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:44:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 28 transitions. [2020-10-20 06:44:09,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 28 transitions. Stem has 21 letters. Loop has 7 letters. [2020-10-20 06:44:09,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:09,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 28 transitions. Stem has 28 letters. Loop has 7 letters. [2020-10-20 06:44:09,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:09,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 28 transitions. Stem has 21 letters. Loop has 14 letters. [2020-10-20 06:44:09,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:09,574 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 169 transitions. [2020-10-20 06:44:09,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:44:09,578 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 94 states and 109 transitions. [2020-10-20 06:44:09,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2020-10-20 06:44:09,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2020-10-20 06:44:09,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 109 transitions. [2020-10-20 06:44:09,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-20 06:44:09,579 INFO L691 BuchiCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-10-20 06:44:09,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 109 transitions. [2020-10-20 06:44:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 32. [2020-10-20 06:44:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-20 06:44:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-20 06:44:09,583 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-20 06:44:09,584 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-20 06:44:09,584 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-20 06:44:09,584 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 38 transitions. [2020-10-20 06:44:09,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-10-20 06:44:09,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:44:09,585 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:44:09,585 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-20 06:44:09,585 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:44:09,585 INFO L794 eck$LassoCheckResult]: Stem: 2197#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2189#L-1 havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~ret9, main_~op~0.base, main_~op~0.offset, main_~i~0;main_~i~0 := main_#t~nondet6;havoc main_#t~nondet6; 2190#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 2204#L23 [2020-10-20 06:44:09,586 INFO L796 eck$LassoCheckResult]: Loop: 2204#L23 call main_#t~ret9 := rec(main_~op~0.base, main_~op~0.offset);< 2205#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 2209#L9 assume !(#t~mem1 < 0);havoc #t~mem1;call #t~mem3 := read~int(~p.base, ~p.offset, 4);#t~post4 := #t~mem3;call write~int(#t~post4 - 1, ~p.base, ~p.offset, 4);havoc #t~mem3;havoc #t~post4; 2184#L15 call #t~ret5 := rec(~p.base, ~p.offset);< 2194#recENTRY ~p.base, ~p.offset := #in~p.base, #in~p.offset;call #t~mem1 := read~int(~p.base, ~p.offset, 4); 2183#L9 assume #t~mem1 < 0;havoc #t~mem1;call #t~mem2 := read~int(~p.base, ~p.offset, 4);~pv~0 := #t~mem2;havoc #t~mem2;call ULTIMATE.dealloc(~p.base, ~p.offset);#res := ~pv~0; 2185#recFINAL assume true; 2206#recEXIT >#28#return; 2211#L15-1 #res := #t~ret5;havoc #t~ret5; 2210#recFINAL assume true; 2208#recEXIT >#30#return; 2198#L23-1 main_~i~0 := main_~i~0 + main_#t~ret9;havoc main_#t~ret9; 2200#L20-2 assume !!(main_~i~0 > 0);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnHeap(4);main_~op~0.base, main_~op~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(main_#t~nondet8, main_~op~0.base, main_~op~0.offset, 4);havoc main_#t~nondet8; 2204#L23 [2020-10-20 06:44:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:09,586 INFO L82 PathProgramCache]: Analyzing trace with hash 37808, now seen corresponding path program 1 times [2020-10-20 06:44:09,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:09,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567265113] [2020-10-20 06:44:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:09,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:09,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:09,596 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:09,597 INFO L82 PathProgramCache]: Analyzing trace with hash -669629144, now seen corresponding path program 1 times [2020-10-20 06:44:09,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:09,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793949385] [2020-10-20 06:44:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:09,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:09,613 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:09,616 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:09,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1720097319, now seen corresponding path program 6 times [2020-10-20 06:44:09,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:44:09,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937401782] [2020-10-20 06:44:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:44:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:09,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:44:09,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:44:09,641 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:44:09,865 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-20 06:44:10,158 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-20 06:44:10,329 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 06:44:10,329 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 06:44:10,329 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 06:44:10,329 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 06:44:10,330 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 06:44:10,330 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:10,330 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 06:44:10,330 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 06:44:10,330 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex3.i_Iteration6_Lasso [2020-10-20 06:44:10,330 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 06:44:10,330 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 06:44:10,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:10,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:10,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:10,560 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-20 06:44:10,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:10,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:10,566 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 06:44:10,897 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 06:44:10,897 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:10,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:10,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:10,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:10,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:10,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:10,906 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:10,906 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:10,909 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 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:10,930 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:10,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:10,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 06:44:10,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:10,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:10,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:10,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 06:44:10,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 06:44:10,933 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 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:10,954 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:10,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:10,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:10,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:10,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:10,959 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:10,959 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:10,965 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 06:44:10,989 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:10,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:10,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:10,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:10,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:10,995 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:10,995 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:11,004 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 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:11,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:11,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:11,029 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2020-10-20 06:44:11,029 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 06:44:11,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:11,037 INFO L401 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2020-10-20 06:44:11,038 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-10-20 06:44:11,055 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 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:11,078 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-20 06:44:11,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 06:44:11,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 06:44:11,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 06:44:11,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 06:44:11,082 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-20 06:44:11,082 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-20 06:44:11,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 06:44:11,098 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-10-20 06:44:11,098 INFO L444 ModelExtractionUtils]: 8 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 06:44:11,101 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 06:44:11,103 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-20 06:44:11,103 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 06:44:11,104 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-10-20 06:44:11,131 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-10-20 06:44:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:44:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:11,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 06:44:11,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:44:11,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 06:44:11,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:44:11,223 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 06:44:11,224 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:44:11,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:44:11,228 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:44:11,228 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:9 [2020-10-20 06:44:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:44:11,305 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2020-10-20 06:44:11,305 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 38 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-10-20 06:44:11,374 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 38 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 69 states and 86 transitions. Complement of second has 22 states. [2020-10-20 06:44:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-10-20 06:44:11,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 06:44:11,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2020-10-20 06:44:11,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 14 transitions. Stem has 3 letters. Loop has 13 letters. [2020-10-20 06:44:11,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:11,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 14 transitions. Stem has 16 letters. Loop has 13 letters. [2020-10-20 06:44:11,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:11,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 14 transitions. Stem has 3 letters. Loop has 26 letters. [2020-10-20 06:44:11,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 06:44:11,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 86 transitions. [2020-10-20 06:44:11,380 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:44:11,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 0 states and 0 transitions. [2020-10-20 06:44:11,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:44:11,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:44:11,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:44:11,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:44:11,381 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:44:11,381 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:44:11,381 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:44:11,381 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-20 06:44:11,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:44:11,382 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:44:11,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:44:11,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:44:11 BoogieIcfgContainer [2020-10-20 06:44:11,388 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:44:11,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:44:11,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:44:11,389 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:44:11,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:43:55" (3/4) ... [2020-10-20 06:44:11,393 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:44:11,393 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:44:11,394 INFO L168 Benchmark]: Toolchain (without parser) took 16709.74 ms. Allocated memory was 41.9 MB in the beginning and 108.0 MB in the end (delta: 66.1 MB). Free memory was 20.7 MB in the beginning and 68.3 MB in the end (delta: -47.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:44:11,395 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 32.0 MB. Free memory was 9.1 MB in the beginning and 9.0 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:44:11,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.50 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.8 MB in the beginning and 22.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:44:11,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 42.5 MB. Free memory was 22.3 MB in the beginning and 20.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:44:11,396 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 42.5 MB. Free memory was 20.8 MB in the beginning and 19.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:44:11,397 INFO L168 Benchmark]: RCFGBuilder took 354.36 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 25.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:44:11,398 INFO L168 Benchmark]: BuchiAutomizer took 15949.97 ms. Allocated memory was 44.6 MB in the beginning and 108.0 MB in the end (delta: 63.4 MB). Free memory was 25.1 MB in the beginning and 68.3 MB in the end (delta: -43.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:44:11,398 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 108.0 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:44:11,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 32.0 MB. Free memory was 9.1 MB in the beginning and 9.0 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 315.50 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.8 MB in the beginning and 22.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.46 ms. Allocated memory is still 42.5 MB. Free memory was 22.3 MB in the beginning and 20.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.44 ms. Allocated memory is still 42.5 MB. Free memory was 20.8 MB in the beginning and 19.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 354.36 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 25.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 15949.97 ms. Allocated memory was 44.6 MB in the beginning and 108.0 MB in the end (delta: 63.4 MB). Free memory was 25.1 MB in the beginning and 68.3 MB in the end (delta: -43.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 14.3 GB. * Witness Printer took 4.43 ms. Allocated memory is still 108.0 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function i and consists of 9 locations. One deterministic module has affine ranking function 2 * unknown-#memory_int-unknown[p][p] + 1 and consists of 5 locations. One deterministic module has affine ranking function aux-rec(op)-aux + i and consists of 8 locations. One deterministic module has affine ranking function i and consists of 8 locations. One nondeterministic module has affine ranking function 2 * unknown-#memory_int-unknown[p][p] + 1 and consists of 6 locations. One nondeterministic module has affine ranking function aux-rec(op)-aux + i and consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.8s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 12.5s. Construction of modules took 0.4s. Büchi inclusion checks took 2.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 111 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 82 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 4/4 HoareTripleCheckerStatistics: 127 SDtfs, 149 SDslu, 120 SDs, 0 SdLazy, 376 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso6 LassoPreprocessingBenchmarks: Lassos: inital172 mio100 ax100 hnf98 lsp96 ukn65 mio100 lsp31 div100 bol100 ite100 ukn100 eq172 hnf89 smp94 dnf150 smp90 tf100 neg93 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 4 VariablesLoop: 5 DisjunctsStem: 4 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 28 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...