./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i -s /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2aaf551f63785020042d5272893266519060a07e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:13:26,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:13:26,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:13:26,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:13:26,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:13:26,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:13:26,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:13:26,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:13:26,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:13:26,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:13:26,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:13:26,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:13:26,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:13:26,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:13:26,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:13:26,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:13:26,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:13:26,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:13:26,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:13:26,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:13:26,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:13:26,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:13:26,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:13:26,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:13:26,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:13:26,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:13:26,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:13:26,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:13:26,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:13:26,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:13:26,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:13:26,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:13:26,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:13:26,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:13:26,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:13:26,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:13:26,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:13:26,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:13:26,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:13:26,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:13:26,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:13:26,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:13:26,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:13:26,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:13:26,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:13:26,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:13:26,731 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:13:26,732 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:13:26,732 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:13:26,732 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:13:26,733 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:13:26,733 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:13:26,733 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:13:26,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:13:26,734 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:13:26,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:13:26,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:13:26,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:13:26,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:13:26,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:13:26,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:13:26,735 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:13:26,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:13:26,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:13:26,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:13:26,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:13:26,737 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:13:26,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:13:26,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:13:26,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:13:26,738 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:13:26,739 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:13:26,739 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aaf551f63785020042d5272893266519060a07e [2020-11-29 19:13:27,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:13:27,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:13:27,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:13:27,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:13:27,081 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:13:27,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/../../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i [2020-11-29 19:13:27,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/data/cbcca0d6b/083a5573bacc4610af76eabd11b67ccd/FLAG606f54b1b [2020-11-29 19:13:27,759 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:13:27,760 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex9.i [2020-11-29 19:13:27,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/data/cbcca0d6b/083a5573bacc4610af76eabd11b67ccd/FLAG606f54b1b [2020-11-29 19:13:28,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/data/cbcca0d6b/083a5573bacc4610af76eabd11b67ccd [2020-11-29 19:13:28,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:13:28,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:13:28,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:28,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:13:28,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:13:28,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434c9ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28, skipping insertion in model container [2020-11-29 19:13:28,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:13:28,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:13:28,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:28,406 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:13:28,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:28,464 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:13:28,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28 WrapperNode [2020-11-29 19:13:28,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:28,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:13:28,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:13:28,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:13:28,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:13:28,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:13:28,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:13:28,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:13:28,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... [2020-11-29 19:13:28,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:13:28,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:13:28,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:13:28,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:13:28,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:13:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2020-11-29 19:13:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2020-11-29 19:13:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 19:13:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:13:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:13:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:13:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:13:29,032 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:13:29,033 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 19:13:29,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:29 BoogieIcfgContainer [2020-11-29 19:13:29,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:13:29,036 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:13:29,036 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:13:29,040 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:13:29,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:13:29,041 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:13:28" (1/3) ... [2020-11-29 19:13:29,043 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ed3b81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:13:29, skipping insertion in model container [2020-11-29 19:13:29,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:13:29,043 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:28" (2/3) ... [2020-11-29 19:13:29,044 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ed3b81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:13:29, skipping insertion in model container [2020-11-29 19:13:29,044 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:13:29,044 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:29" (3/3) ... [2020-11-29 19:13:29,046 INFO L373 chiAutomizerObserver]: Analyzing ICFG rec_malloc_ex9.i [2020-11-29 19:13:29,104 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:13:29,104 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:13:29,105 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:13:29,105 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:13:29,105 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:13:29,105 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:13:29,105 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:13:29,106 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:13:29,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 19:13:29,153 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:13:29,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:13:29,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:13:29,163 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:13:29,163 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:29,163 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:13:29,163 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-11-29 19:13:29,167 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:13:29,168 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:13:29,168 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:13:29,168 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:13:29,169 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:29,180 INFO L794 eck$LassoCheckResult]: Stem: 11#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 3#L29-3true [2020-11-29 19:13:29,183 INFO L796 eck$LassoCheckResult]: Loop: 3#L29-3true call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 6#L29-1true assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 13#L33true call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 5#recENTRYtrue ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 9#L9true assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 16#recFINALtrue assume true; 14#recEXITtrue >#33#return; 12#L33-1true havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 3#L29-3true [2020-11-29 19:13:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:29,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 1 times [2020-11-29 19:13:29,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:29,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373093118] [2020-11-29 19:13:29,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:29,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:29,421 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:29,452 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:29,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:29,458 INFO L82 PathProgramCache]: Analyzing trace with hash 51331199, now seen corresponding path program 1 times [2020-11-29 19:13:29,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:29,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865210654] [2020-11-29 19:13:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:13:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:29,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865210654] [2020-11-29 19:13:29,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:29,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:13:29,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407110093] [2020-11-29 19:13:29,875 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:13:29,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:29,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:13:29,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:13:29,903 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 7 states. [2020-11-29 19:13:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:30,151 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-11-29 19:13:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:13:30,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2020-11-29 19:13:30,157 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:13:30,164 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 16 transitions. [2020-11-29 19:13:30,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 19:13:30,166 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 19:13:30,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2020-11-29 19:13:30,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:13:30,169 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 19:13:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2020-11-29 19:13:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 19:13:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 19:13:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-29 19:13:30,203 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 19:13:30,203 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-29 19:13:30,204 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:13:30,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2020-11-29 19:13:30,205 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:13:30,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:13:30,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:13:30,206 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:13:30,207 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:30,207 INFO L794 eck$LassoCheckResult]: Stem: 65#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 55#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 56#L29-3 [2020-11-29 19:13:30,207 INFO L796 eck$LassoCheckResult]: Loop: 56#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 61#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 59#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 64#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 57#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 58#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 64#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 57#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 60#recFINAL assume true; 67#recEXIT >#31#return; 62#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 63#recFINAL assume true; 68#recEXIT >#33#return; 66#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 56#L29-3 [2020-11-29 19:13:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:30,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 2 times [2020-11-29 19:13:30,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:30,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907483862] [2020-11-29 19:13:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:30,223 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:30,235 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:30,240 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:30,241 INFO L82 PathProgramCache]: Analyzing trace with hash 198344305, now seen corresponding path program 1 times [2020-11-29 19:13:30,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:30,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085662224] [2020-11-29 19:13:30,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:30,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:30,330 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:30,346 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:30,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1849555021, now seen corresponding path program 1 times [2020-11-29 19:13:30,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:30,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631177947] [2020-11-29 19:13:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:30,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 19:13:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:13:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:13:30,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631177947] [2020-11-29 19:13:30,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047135163] [2020-11-29 19:13:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:30,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 19:13:30,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:30,807 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2020-11-29 19:13:30,834 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:30,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:30,842 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:13:30,843 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-11-29 19:13:30,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 19:13:30,945 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2020-11-29 19:13:30,947 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:30,958 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:30,961 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:13:30,962 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:111, output treesize:3 [2020-11-29 19:13:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:13:31,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:31,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2020-11-29 19:13:31,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750312730] [2020-11-29 19:13:31,391 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-11-29 19:13:31,661 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-11-29 19:13:31,837 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-11-29 19:13:32,490 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2020-11-29 19:13:32,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:32,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:13:32,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:13:32,593 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. cyclomatic complexity: 4 Second operand 11 states. [2020-11-29 19:13:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:32,769 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2020-11-29 19:13:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:13:32,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2020-11-29 19:13:32,772 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:13:32,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 19 transitions. [2020-11-29 19:13:32,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 19:13:32,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 19:13:32,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2020-11-29 19:13:32,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:13:32,775 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 19:13:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2020-11-29 19:13:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-29 19:13:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 19:13:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-29 19:13:32,780 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 19:13:32,780 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-29 19:13:32,780 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:13:32,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 19 transitions. [2020-11-29 19:13:32,781 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:13:32,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:13:32,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:13:32,783 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:13:32,783 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:32,783 INFO L794 eck$LassoCheckResult]: Stem: 180#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 169#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 170#L29-3 [2020-11-29 19:13:32,783 INFO L796 eck$LassoCheckResult]: Loop: 170#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 177#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 172#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 178#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 171#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 173#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 178#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 171#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 173#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 178#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 171#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 174#recFINAL assume true; 181#recEXIT >#31#return; 175#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 176#recFINAL assume true; 185#recEXIT >#31#return; 183#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 184#recFINAL assume true; 182#recEXIT >#33#return; 179#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 170#L29-3 [2020-11-29 19:13:32,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:32,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1219, now seen corresponding path program 3 times [2020-11-29 19:13:32,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:32,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264857669] [2020-11-29 19:13:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:32,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:32,823 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:32,840 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1148543297, now seen corresponding path program 2 times [2020-11-29 19:13:32,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:32,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176443678] [2020-11-29 19:13:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:32,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:32,955 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:32,963 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:32,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1421169023, now seen corresponding path program 2 times [2020-11-29 19:13:32,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:32,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470011047] [2020-11-29 19:13:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:32,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:33,047 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:33,062 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:33,507 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-11-29 19:13:33,782 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-11-29 19:13:34,141 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-11-29 19:13:34,964 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2020-11-29 19:13:35,178 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-29 19:13:35,308 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-11-29 19:13:35,416 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-11-29 19:13:35,432 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:13:35,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:13:35,433 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:13:35,433 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:13:35,433 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:13:35,433 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:35,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:13:35,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:13:35,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex9.i_Iteration3_Lasso [2020-11-29 19:13:35,435 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:13:35,436 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:13:35,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:35,788 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-11-29 19:13:36,132 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-11-29 19:13:36,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:36,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:36,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:36,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:36,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:36,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:13:36,702 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 26 [2020-11-29 19:13:36,873 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2020-11-29 19:13:37,022 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:13:37,028 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,047 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 [2020-11-29 19:13:37,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:13:37,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,053 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:13:37,053 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:13:37,055 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,085 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 [2020-11-29 19:13:37,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:13:37,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:13:37,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:13:37,091 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,123 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 [2020-11-29 19:13:37,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:13:37,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:13:37,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:13:37,129 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,157 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 [2020-11-29 19:13:37,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,165 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:13:37,166 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:13:37,181 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:13:37,229 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 [2020-11-29 19:13:37,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,236 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:13:37,236 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:13:37,292 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 [2020-11-29 19:13:37,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:13:37,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:13:37,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,301 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,363 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 [2020-11-29 19:13:37,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:13:37,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,366 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:13:37,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:13:37,368 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,396 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 [2020-11-29 19:13:37,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:13:37,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,403 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:13:37,403 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:13:37,407 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,435 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 [2020-11-29 19:13:37,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,438 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2020-11-29 19:13:37,438 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-11-29 19:13:37,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,551 INFO L401 nArgumentSynthesizer]: We have 72 Motzkin's Theorem applications. [2020-11-29 19:13:37,551 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-11-29 19:13:37,674 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:13:37,711 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 [2020-11-29 19:13:37,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:13:37,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:13:37,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:13:37,726 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:13:37,726 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:13:37,742 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:13:37,875 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 19:13:37,876 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:13:37,891 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:13:37,895 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 19:13:37,895 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:13:37,896 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_1 Supporting invariants [] [2020-11-29 19:13:37,995 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2020-11-29 19:13:38,002 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-29 19:13:38,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:38,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:13:38,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:38,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 19:13:38,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:38,186 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:38,187 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 1 case distinctions, treesize of input 110 treesize of output 47 [2020-11-29 19:13:38,189 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:13:38,192 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:38,262 INFO L625 ElimStorePlain]: treesize reduction 16, result has 75.0 percent of original size [2020-11-29 19:13:38,262 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:13:38,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:48 [2020-11-29 19:13:39,671 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 19:13:39,672 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:39,716 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:39,720 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-29 19:13:39,721 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:35 [2020-11-29 19:13:39,942 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:39,943 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 19:13:39,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:39,994 INFO L625 ElimStorePlain]: treesize reduction 14, result has 75.4 percent of original size [2020-11-29 19:13:39,999 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-11-29 19:13:40,000 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:44, output treesize:43 [2020-11-29 19:13:40,918 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:13:40,933 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:13:41,052 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:41,052 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-11-29 19:13:41,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:13:41,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:13:41,059 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:41,087 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:41,088 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-11-29 19:13:41,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:13:41,101 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:13:41,103 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:41,180 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:41,254 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:13:41,254 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 78 [2020-11-29 19:13:41,256 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:41,278 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2020-11-29 19:13:41,279 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 19:13:41,463 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-11-29 19:13:41,469 INFO L625 ElimStorePlain]: treesize reduction 42, result has 72.4 percent of original size [2020-11-29 19:13:41,473 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-11-29 19:13:41,473 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:128, output treesize:100 [2020-11-29 19:13:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:13:41,605 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 14 loop predicates [2020-11-29 19:13:41,605 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand 15 states. [2020-11-29 19:13:57,907 WARN L193 SmtUtils]: Spent 15.27 s on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-11-29 19:14:10,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4. Second operand 15 states. Result 57 states and 65 transitions. Complement of second has 33 states. [2020-11-29 19:14:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2020-11-29 19:14:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 19:14:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2020-11-29 19:14:10,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 14 transitions. Stem has 2 letters. Loop has 20 letters. [2020-11-29 19:14:10,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:14:10,081 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:14:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:14:10,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:14:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:10,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-29 19:14:10,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:14:10,221 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:10,221 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 1 case distinctions, treesize of input 110 treesize of output 47 [2020-11-29 19:14:10,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:14:10,224 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:10,294 INFO L625 ElimStorePlain]: treesize reduction 16, result has 75.0 percent of original size [2020-11-29 19:14:10,294 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:14:10,294 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:122, output treesize:48 [2020-11-29 19:14:11,986 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 19:14:11,986 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:12,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:12,009 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-29 19:14:12,009 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:35 [2020-11-29 19:14:12,373 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:12,373 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 19:14:12,374 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:12,430 INFO L625 ElimStorePlain]: treesize reduction 14, result has 75.4 percent of original size [2020-11-29 19:14:12,433 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2020-11-29 19:14:12,433 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:44, output treesize:43 [2020-11-29 19:14:12,568 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:14:12,687 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:12,688 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-11-29 19:14:12,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:14:12,691 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:12,710 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:12,711 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-11-29 19:14:12,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:14:12,714 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:12,800 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:12,809 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:14:12,816 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2020-11-29 19:14:12,817 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:12,876 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:12,876 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 78 [2020-11-29 19:14:12,878 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:14:12,880 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-11-29 19:14:12,883 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:13,095 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2020-11-29 19:14:13,096 INFO L625 ElimStorePlain]: treesize reduction 53, result has 69.9 percent of original size [2020-11-29 19:14:13,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:14:13,106 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2020-11-29 19:14:13,107 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:128, output treesize:117 [2020-11-29 19:14:13,108 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:14:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:14:13,254 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 14 loop predicates [2020-11-29 19:14:13,255 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4 Second operand 15 states. [2020-11-29 19:14:19,381 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-11-29 19:14:22,363 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 19 transitions. cyclomatic complexity: 4. Second operand 15 states. Result 69 states and 79 transitions. Complement of second has 37 states. [2020-11-29 19:14:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2020-11-29 19:14:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 19:14:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-11-29 19:14:22,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 18 transitions. Stem has 2 letters. Loop has 20 letters. [2020-11-29 19:14:22,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:14:22,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 18 transitions. Stem has 22 letters. Loop has 20 letters. [2020-11-29 19:14:22,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:14:22,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 18 transitions. Stem has 2 letters. Loop has 40 letters. [2020-11-29 19:14:22,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:14:22,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 79 transitions. [2020-11-29 19:14:22,375 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 19:14:22,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 52 states and 62 transitions. [2020-11-29 19:14:22,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2020-11-29 19:14:22,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2020-11-29 19:14:22,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 62 transitions. [2020-11-29 19:14:22,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:14:22,385 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-11-29 19:14:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 62 transitions. [2020-11-29 19:14:22,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-29 19:14:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 19:14:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-11-29 19:14:22,395 INFO L714 BuchiCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-11-29 19:14:22,395 INFO L594 BuchiCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-11-29 19:14:22,396 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:14:22,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 62 transitions. [2020-11-29 19:14:22,398 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 19:14:22,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:14:22,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:14:22,399 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:14:22,399 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:14:22,400 INFO L794 eck$LassoCheckResult]: Stem: 648#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 629#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 630#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 641#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 643#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 642#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 644#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 633#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 655#recENTRY [2020-11-29 19:14:22,400 INFO L796 eck$LassoCheckResult]: Loop: 655#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 669#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 632#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 655#recENTRY [2020-11-29 19:14:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash -15910302, now seen corresponding path program 1 times [2020-11-29 19:14:22,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:22,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590855186] [2020-11-29 19:14:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:22,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:22,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:22,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:22,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:22,438 INFO L82 PathProgramCache]: Analyzing trace with hash 29945, now seen corresponding path program 1 times [2020-11-29 19:14:22,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:22,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383734149] [2020-11-29 19:14:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:22,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:22,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:22,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:22,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:22,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1537404168, now seen corresponding path program 2 times [2020-11-29 19:14:22,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:22,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861535962] [2020-11-29 19:14:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:22,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:14:22,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:14:22,496 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:14:23,545 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-11-29 19:14:23,736 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-29 19:14:24,469 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-11-29 19:14:24,777 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-29 19:14:24,781 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:14:24,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:14:24,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:14:24,782 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:14:24,782 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:14:24,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:24,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:14:24,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:14:24,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex9.i_Iteration4_Lasso [2020-11-29 19:14:24,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:14:24,782 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:14:24,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:24,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:25,089 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-11-29 19:14:25,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:25,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:25,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:14:25,717 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2020-11-29 19:14:25,808 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:14:25,808 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:14:25,837 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 [2020-11-29 19:14:25,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:25,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:25,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:25,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:25,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:25,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:25,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:25,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:25,885 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 [2020-11-29 19:14:25,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:25,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:25,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:25,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:25,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:25,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:25,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:25,888 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:25,916 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 [2020-11-29 19:14:25,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:25,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:25,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:25,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:25,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:25,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:25,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:25,920 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:25,947 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 [2020-11-29 19:14:25,949 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:25,949 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:25,949 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:25,949 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:25,949 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:25,950 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:25,950 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:25,951 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:25,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:14:25,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:25,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:25,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:25,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:25,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:25,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:25,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,013 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:14:26,063 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 [2020-11-29 19:14:26,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,065 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,066 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,066 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,074 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,118 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 [2020-11-29 19:14:26,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,121 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,153 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 [2020-11-29 19:14:26,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,158 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:14:26,159 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:14:26,174 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,223 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 [2020-11-29 19:14:26,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,224 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,226 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:26,255 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 [2020-11-29 19:14:26,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,288 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 [2020-11-29 19:14:26,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,289 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,291 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,320 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 [2020-11-29 19:14:26,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,322 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,355 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 [2020-11-29 19:14:26,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,358 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,360 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,388 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 [2020-11-29 19:14:26,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,392 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,421 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 [2020-11-29 19:14:26,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:14:26,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,456 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,483 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:14:26,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,485 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,485 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,488 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,518 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:14:26,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,520 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,520 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,522 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,548 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 [2020-11-29 19:14:26,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,552 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:14:26,601 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,608 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:14:26,608 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:14:26,611 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:26,637 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 [2020-11-29 19:14:26,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,640 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,662 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:26,690 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:14:26,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,693 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,693 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,694 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:26,727 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 [2020-11-29 19:14:26,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,735 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:14:26,735 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:14:26,739 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:26,766 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 [2020-11-29 19:14:26,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,771 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:26,799 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 [2020-11-29 19:14:26,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,801 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,803 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:26,830 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 [2020-11-29 19:14:26,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,833 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:14:26,835 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:14:26,897 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 [2020-11-29 19:14:26,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,903 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:14:26,949 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 [2020-11-29 19:14:26,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:26,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:14:26,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:26,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:26,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:26,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:14:26,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:26,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:14:27,000 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 [2020-11-29 19:14:27,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:27,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:27,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:27,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:14:27,006 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:14:27,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:14:27,012 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:27,039 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 [2020-11-29 19:14:27,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:27,041 INFO L203 nArgumentSynthesizer]: 8 stem disjuncts [2020-11-29 19:14:27,041 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 19:14:27,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:27,059 INFO L401 nArgumentSynthesizer]: We have 44 Motzkin's Theorem applications. [2020-11-29 19:14:27,059 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2020-11-29 19:14:27,085 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:27,113 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 [2020-11-29 19:14:27,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:14:27,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:14:27,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:14:27,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:14:27,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:14:27,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:14:27,123 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:14:27,134 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 19:14:27,134 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:14:27,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:14:27,140 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 19:14:27,140 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:14:27,140 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~i) = 2*rec_#in~i + 1 Supporting invariants [] [2020-11-29 19:14:27,167 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2020-11-29 19:14:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:27,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:14:27,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:14:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:27,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:14:27,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:14:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:14:27,289 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 [2020-11-29 19:14:27,289 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 62 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 19:14:27,381 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 62 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 98 states and 123 transitions. Complement of second has 13 states. [2020-11-29 19:14:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:14:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 19:14:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-29 19:14:27,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-29 19:14:27,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:14:27,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 11 letters. Loop has 3 letters. [2020-11-29 19:14:27,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:14:27,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 6 letters. [2020-11-29 19:14:27,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:14:27,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 123 transitions. [2020-11-29 19:14:27,397 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 19:14:27,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 78 states and 100 transitions. [2020-11-29 19:14:27,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2020-11-29 19:14:27,403 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2020-11-29 19:14:27,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 100 transitions. [2020-11-29 19:14:27,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:14:27,403 INFO L691 BuchiCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-11-29 19:14:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 100 transitions. [2020-11-29 19:14:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-29 19:14:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-29 19:14:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-11-29 19:14:27,420 INFO L714 BuchiCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-11-29 19:14:27,420 INFO L594 BuchiCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-11-29 19:14:27,420 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 19:14:27,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 100 transitions. [2020-11-29 19:14:27,423 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-29 19:14:27,424 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:14:27,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:14:27,425 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 19:14:27,425 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:14:27,426 INFO L794 eck$LassoCheckResult]: Stem: 870#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 847#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 848#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 859#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 871#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 872#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 912#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 845#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 911#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 844#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 846#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 865#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 866#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 913#recFINAL assume true; 918#recEXIT >#31#return; 855#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 858#recFINAL assume true; 910#recEXIT >#31#return; 888#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 887#recFINAL assume true; 883#recEXIT >#33#return; 869#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 861#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 863#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 881#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 906#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 904#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 852#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 896#recENTRY [2020-11-29 19:14:27,426 INFO L796 eck$LassoCheckResult]: Loop: 896#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 900#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 853#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 896#recENTRY [2020-11-29 19:14:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:14:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash -892002912, now seen corresponding path program 3 times [2020-11-29 19:14:27,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:14:27,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71154553] [2020-11-29 19:14:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:14:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 19:14:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:14:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:28,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:14:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:14:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 19:14:28,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71154553] [2020-11-29 19:14:28,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500576336] [2020-11-29 19:14:28,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:14:28,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 19:14:28,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:14:28,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 19:14:28,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:14:28,727 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 21 [2020-11-29 19:14:28,729 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:28,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:28,740 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:14:28,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:13 [2020-11-29 19:14:28,797 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:14:28,822 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:28,822 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 1 case distinctions, treesize of input 95 treesize of output 33 [2020-11-29 19:14:28,825 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:28,865 INFO L625 ElimStorePlain]: treesize reduction 12, result has 69.2 percent of original size [2020-11-29 19:14:28,866 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:14:28,866 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:115, output treesize:27 [2020-11-29 19:14:29,036 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 19:14:29,036 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:29,046 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:29,046 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:14:29,046 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-11-29 19:14:29,331 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 9 [2020-11-29 19:14:29,331 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:29,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:29,350 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 19:14:29,350 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:28 [2020-11-29 19:14:38,081 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-29 19:14:38,081 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:14:38,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:14:38,099 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-29 19:14:38,100 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:33 [2020-11-29 19:15:03,997 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:03,998 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 28 [2020-11-29 19:15:03,998 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:04,055 INFO L625 ElimStorePlain]: treesize reduction 14, result has 73.1 percent of original size [2020-11-29 19:15:04,058 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-11-29 19:15:04,058 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:38 [2020-11-29 19:15:04,279 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,280 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,330 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:04,331 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 76 [2020-11-29 19:15:04,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:15:04,335 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:04,509 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-11-29 19:15:04,510 INFO L625 ElimStorePlain]: treesize reduction 33, result has 70.5 percent of original size [2020-11-29 19:15:04,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,514 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 19:15:04,515 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:82 [2020-11-29 19:15:04,516 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,516 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,639 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,652 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,655 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,656 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,657 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,663 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,690 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,697 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,701 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2020-11-29 19:15:04,702 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:04,720 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,735 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,744 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,787 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:04,788 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 54 [2020-11-29 19:15:04,789 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:04,832 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,834 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,898 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:04,898 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 98 [2020-11-29 19:15:04,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:15:04,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:04,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:04,904 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:04,927 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,928 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,931 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,938 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,948 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2020-11-29 19:15:04,951 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:04,966 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,972 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:04,987 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:05,014 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:05,014 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 54 [2020-11-29 19:15:05,015 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:05,035 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:05,036 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:05,069 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:05,069 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 69 [2020-11-29 19:15:05,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-29 19:15:05,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:05,073 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:05,076 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:05,728 WARN L193 SmtUtils]: Spent 651.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2020-11-29 19:15:05,729 INFO L625 ElimStorePlain]: treesize reduction 424, result has 36.8 percent of original size [2020-11-29 19:15:05,765 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 4 xjuncts. [2020-11-29 19:15:05,765 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:429, output treesize:235 [2020-11-29 19:15:06,204 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2020-11-29 19:15:06,213 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-29 19:15:06,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:06,328 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,335 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,363 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:06,364 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 42 [2020-11-29 19:15:06,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:06,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:06,376 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:06,391 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,392 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,394 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2020-11-29 19:15:06,403 INFO L545 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 19:15:06,419 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,423 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,424 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2020-11-29 19:15:06,426 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:06,451 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,452 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:06,470 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:06,470 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 31 [2020-11-29 19:15:06,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:15:06,473 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:15:06,474 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:15:06,475 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:15:06,476 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2020-11-29 19:15:06,730 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-11-29 19:15:06,730 INFO L625 ElimStorePlain]: treesize reduction 10, result has 93.6 percent of original size [2020-11-29 19:15:06,768 INFO L545 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 4 xjuncts. [2020-11-29 19:15:06,769 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:257, output treesize:73 [2020-11-29 19:15:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:15:06,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:15:06,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2020-11-29 19:15:06,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469503265] [2020-11-29 19:15:06,953 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:15:06,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:06,953 INFO L82 PathProgramCache]: Analyzing trace with hash 29945, now seen corresponding path program 2 times [2020-11-29 19:15:06,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:06,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612059420] [2020-11-29 19:15:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:15:06,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:15:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:15:06,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:15:06,963 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:15:07,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:15:07,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-29 19:15:07,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=880, Unknown=8, NotChecked=0, Total=992 [2020-11-29 19:15:07,286 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. cyclomatic complexity: 28 Second operand 32 states. [2020-11-29 19:15:09,540 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 19:15:26,624 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2020-11-29 19:15:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:15:38,697 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-11-29 19:15:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:15:38,698 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 76 transitions. [2020-11-29 19:15:38,701 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:15:38,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 41 states and 51 transitions. [2020-11-29 19:15:38,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 19:15:38,709 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 19:15:38,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2020-11-29 19:15:38,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:15:38,710 INFO L691 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-11-29 19:15:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2020-11-29 19:15:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-29 19:15:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 19:15:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-11-29 19:15:38,717 INFO L714 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-11-29 19:15:38,717 INFO L594 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-11-29 19:15:38,717 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 19:15:38,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2020-11-29 19:15:38,719 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:15:38,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:15:38,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:15:38,722 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:15:38,722 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-29 19:15:38,723 INFO L794 eck$LassoCheckResult]: Stem: 1167#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1155#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 1156#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1183#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1171#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1181#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1179#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1154#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1172#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1153#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1151#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1165#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1166#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1150#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1165#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1149#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1152#recFINAL assume true; 1170#recEXIT >#31#return; 1185#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1184#recFINAL assume true; 1182#recEXIT >#31#return; 1180#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1178#recFINAL assume true; 1177#recEXIT >#31#return; 1174#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1175#recFINAL assume true; 1173#recEXIT >#33#return; 1168#L33-1 [2020-11-29 19:15:38,723 INFO L796 eck$LassoCheckResult]: Loop: 1168#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 1161#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1162#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1158#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1163#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1164#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1159#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1163#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1164#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1159#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1163#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1164#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1159#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1163#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1164#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1159#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1163#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1164#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1187#recFINAL assume true; 1169#recEXIT >#31#return; 1157#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1160#recFINAL assume true; 1189#recEXIT >#31#return; 1188#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1186#recFINAL assume true; 1176#recEXIT >#31#return; 1174#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1175#recFINAL assume true; 1173#recEXIT >#31#return; 1174#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1175#recFINAL assume true; 1173#recEXIT >#33#return; 1168#L33-1 [2020-11-29 19:15:38,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:38,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1048585469, now seen corresponding path program 1 times [2020-11-29 19:15:38,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:38,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649506034] [2020-11-29 19:15:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:15:38,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:15:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:15:38,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:15:38,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:15:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:38,815 INFO L82 PathProgramCache]: Analyzing trace with hash -195458237, now seen corresponding path program 3 times [2020-11-29 19:15:38,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:38,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200196101] [2020-11-29 19:15:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:15:38,864 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:15:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:15:38,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:15:38,912 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:15:38,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:15:38,917 INFO L82 PathProgramCache]: Analyzing trace with hash -2091065787, now seen corresponding path program 4 times [2020-11-29 19:15:38,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:15:38,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848921443] [2020-11-29 19:15:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:15:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:39,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 19:15:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:39,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:15:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:39,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:15:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:15:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:39,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-29 19:15:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:15:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:39,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:15:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:15:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:40,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 19:15:40,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:15:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 29 proven. 113 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-11-29 19:15:40,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848921443] [2020-11-29 19:15:40,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072331537] [2020-11-29 19:15:40,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:15:40,177 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:15:40,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:15:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 65 conjunts are in the unsatisfiable core [2020-11-29 19:15:40,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:15:40,195 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:40,210 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:15:40,211 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 8 [2020-11-29 19:15:40,212 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:40,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:40,219 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:15:40,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:15 [2020-11-29 19:15:40,268 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 17 [2020-11-29 19:15:40,269 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:15:40,280 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:15:40,281 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:15:40,282 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:117, output treesize:29 [2020-11-29 19:16:08,131 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:16:08,131 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 100 [2020-11-29 19:16:08,132 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:16:08,181 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:16:08,191 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2020-11-29 19:16:08,192 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:16:08,242 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:16:08,245 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 19:16:08,245 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:71, output treesize:40 [2020-11-29 19:16:08,392 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2020-11-29 19:16:08,393 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:16:08,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:16:08,412 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 19:16:08,412 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:61, output treesize:44 [2020-11-29 19:16:08,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 19:16:08,537 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2020-11-29 19:16:08,538 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:16:08,549 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:16:08,550 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:16:08,551 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:143, output treesize:3 [2020-11-29 19:16:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 26 proven. 131 refuted. 6 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-29 19:16:08,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:16:08,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 35 [2020-11-29 19:16:08,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743971761] [2020-11-29 19:16:09,062 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-11-29 19:16:09,237 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-29 19:16:09,567 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-11-29 19:16:10,259 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-29 19:16:10,430 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 19:16:10,620 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 19:16:10,775 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-29 19:16:11,247 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-11-29 19:16:11,384 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-29 19:16:11,566 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-29 19:16:11,742 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 19:16:13,134 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 133 DAG size of output: 132 [2020-11-29 19:16:13,433 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-29 19:16:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:16:13,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-29 19:16:13,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1151, Unknown=3, NotChecked=0, Total=1260 [2020-11-29 19:16:13,436 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. cyclomatic complexity: 13 Second operand 36 states. [2020-11-29 19:16:15,218 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-29 19:17:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:17:11,691 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2020-11-29 19:17:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-29 19:17:11,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 76 transitions. [2020-11-29 19:17:11,695 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:17:11,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 44 states and 56 transitions. [2020-11-29 19:17:11,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-11-29 19:17:11,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2020-11-29 19:17:11,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 56 transitions. [2020-11-29 19:17:11,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:17:11,698 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-11-29 19:17:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 56 transitions. [2020-11-29 19:17:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-29 19:17:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 19:17:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2020-11-29 19:17:11,711 INFO L714 BuchiCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-11-29 19:17:11,711 INFO L594 BuchiCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-11-29 19:17:11,711 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 19:17:11,711 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 56 transitions. [2020-11-29 19:17:11,713 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-29 19:17:11,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:17:11,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:17:11,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:11,718 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 19:17:11,718 INFO L794 eck$LassoCheckResult]: Stem: 1649#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1633#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 1634#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1641#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1645#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1644#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1646#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1640#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1660#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1639#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1637#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1647#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1648#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1636#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1647#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1648#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1636#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1647#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1635#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1638#recFINAL assume true; 1655#recEXIT >#31#return; 1642#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1643#recFINAL assume true; 1671#recEXIT >#31#return; 1669#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1668#recFINAL assume true; 1667#recEXIT >#31#return; 1665#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1659#recFINAL assume true; 1657#recEXIT >#31#return; 1658#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1664#recFINAL assume true; 1663#recEXIT >#33#return; 1650#L33-1 [2020-11-29 19:17:11,719 INFO L796 eck$LassoCheckResult]: Loop: 1650#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 1651#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 1654#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 1652#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 1653#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1661#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1656#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1653#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1661#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1656#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1653#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1661#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 1656#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 1653#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 1661#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 1662#recFINAL assume true; 1676#recEXIT >#31#return; 1675#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1674#recFINAL assume true; 1673#recEXIT >#31#return; 1672#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1670#recFINAL assume true; 1666#recEXIT >#31#return; 1665#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 1659#recFINAL assume true; 1657#recEXIT >#33#return; 1650#L33-1 [2020-11-29 19:17:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1075606773, now seen corresponding path program 2 times [2020-11-29 19:17:11,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:11,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624557194] [2020-11-29 19:17:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:17:11,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:17:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:17:11,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:17:11,785 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:17:11,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:11,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1437025233, now seen corresponding path program 4 times [2020-11-29 19:17:11,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:11,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347339528] [2020-11-29 19:17:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:17:11,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:17:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:17:11,826 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:17:11,834 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:17:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:11,835 INFO L82 PathProgramCache]: Analyzing trace with hash -945901627, now seen corresponding path program 5 times [2020-11-29 19:17:11,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:17:11,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949927197] [2020-11-29 19:17:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:17:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:17:11,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:17:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:17:11,904 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:17:11,931 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:17:12,221 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-11-29 19:17:12,639 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-11-29 19:17:12,931 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-29 19:17:13,297 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-29 19:17:13,498 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 19:17:13,615 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-29 19:17:14,566 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 124 [2020-11-29 19:17:14,743 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-29 19:17:14,996 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-11-29 19:17:15,424 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-11-29 19:17:15,954 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-29 19:17:16,164 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 19:17:16,351 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-29 19:17:16,734 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 111 [2020-11-29 19:17:16,877 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-29 19:17:17,026 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-29 19:17:17,156 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 19:17:18,955 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 170 DAG size of output: 160 [2020-11-29 19:17:19,391 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-29 19:17:19,394 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:17:19,394 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:17:19,394 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:17:19,395 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:17:19,395 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:17:19,395 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:17:19,395 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:17:19,395 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:17:19,395 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex9.i_Iteration7_Lasso [2020-11-29 19:17:19,395 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:17:19,395 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:17:19,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:19,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:19,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:19,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:19,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:19,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:19,795 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-11-29 19:17:20,047 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-11-29 19:17:20,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:20,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:20,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:20,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:20,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:20,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:20,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:17:20,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-29 19:17:24,838 WARN L193 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-11-29 19:17:25,136 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-11-29 19:17:25,314 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:17:25,314 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:25,330 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:17:25,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:25,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:17:25,331 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:25,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:25,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:25,332 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:17:25,332 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:17:25,333 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:25,354 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 [2020-11-29 19:17:25,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:25,355 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:17:25,355 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:25,355 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:25,355 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:25,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:17:25,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:17:25,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:25,378 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 [2020-11-29 19:17:25,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:25,379 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:25,379 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:25,379 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:25,380 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:17:25,380 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:17:25,383 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:25,404 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 [2020-11-29 19:17:25,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:25,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:17:25,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:25,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:25,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:25,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:17:25,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:17:25,407 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:25,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:17:25,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:25,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:17:25,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:25,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:25,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:25,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:17:25,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:17:25,431 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:25,453 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:17:25,455 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:25,455 INFO L203 nArgumentSynthesizer]: 64 stem disjuncts [2020-11-29 19:17:25,455 INFO L204 nArgumentSynthesizer]: 8 loop disjuncts [2020-11-29 19:17:25,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:26,692 INFO L401 nArgumentSynthesizer]: We have 1168 Motzkin's Theorem applications. [2020-11-29 19:17:26,692 INFO L402 nArgumentSynthesizer]: A total of 16 supporting invariants were added. [2020-11-29 19:17:28,927 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:28,973 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 [2020-11-29 19:17:28,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:28,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:17:28,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:28,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:28,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:28,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:17:28,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:17:28,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:29,010 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:17:29,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:29,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:29,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:29,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:29,014 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:17:29,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:17:29,019 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:17:29,044 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 [2020-11-29 19:17:29,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:29,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:29,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:29,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:29,047 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:17:29,047 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:17:29,049 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/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 [2020-11-29 19:17:29,072 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:17:29,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:17:29,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:17:29,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:17:29,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:17:29,077 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:17:29,077 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:17:29,084 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:17:29,103 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-11-29 19:17:29,104 INFO L444 ModelExtractionUtils]: 3 out of 13 variables were initially zero. Simplification set additionally 7 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:17:29,106 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:17:29,108 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 19:17:29,108 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:17:29,108 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~pp~0.base) ULTIMATE.start_main_~pp~0.offset)_2, v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_2) = 1*v_rep(select (select #memory_int ULTIMATE.start_main_~pp~0.base) ULTIMATE.start_main_~pp~0.offset)_2 + 1*v_rep(select (select #memory_int ULTIMATE.start_main_~qq~0.base) ULTIMATE.start_main_~qq~0.offset)_2 Supporting invariants [] [2020-11-29 19:17:29,180 INFO L297 tatePredicateManager]: 11 out of 11 supporting invariants were superfluous and have been removed [2020-11-29 19:17:29,181 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-29 19:17:29,182 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-29 19:17:29,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:17:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:29,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:17:29,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:29,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:17:29,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:17:29,284 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:17:29,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:17:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:17:29,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 19:17:29,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:17:29,415 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:17:29,415 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 60 [2020-11-29 19:17:29,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:17:29,417 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:17:29,489 INFO L625 ElimStorePlain]: treesize reduction 55, result has 39.6 percent of original size [2020-11-29 19:17:29,489 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:17:29,489 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:36 [2020-11-29 19:17:29,565 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-11-29 19:17:29,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 19:17:29,601 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 23 [2020-11-29 19:17:29,602 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:17:29,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 19:17:29,661 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:17:29,661 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 52 [2020-11-29 19:17:29,663 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:17:29,665 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:17:29,764 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 23 [2020-11-29 19:17:29,765 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 19:17:29,890 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-11-29 19:17:29,891 INFO L625 ElimStorePlain]: treesize reduction 111, result has 36.9 percent of original size [2020-11-29 19:17:29,891 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-29 19:17:29,891 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:378, output treesize:65 [2020-11-29 19:17:33,765 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 19:18:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 8 refuted. 6 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-29 19:18:02,177 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 13 loop predicates [2020-11-29 19:18:02,177 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 44 states and 56 transitions. cyclomatic complexity: 15 Second operand 15 states. [2020-11-29 19:18:54,949 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 44 states and 56 transitions. cyclomatic complexity: 15. Second operand 15 states. Result 127 states and 143 transitions. Complement of second has 37 states. [2020-11-29 19:18:54,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2020-11-29 19:18:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 19:18:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 32 transitions. [2020-11-29 19:18:54,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 32 transitions. Stem has 33 letters. Loop has 26 letters. [2020-11-29 19:18:54,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:18:54,955 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:18:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:18:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:55,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:18:55,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:18:55,096 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:18:55,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:18:55,098 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:18:55,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:18:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:18:55,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 43 conjunts are in the unsatisfiable core [2020-11-29 19:18:55,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:18:55,177 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:18:55,178 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 60 [2020-11-29 19:18:55,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:18:55,179 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:18:55,220 INFO L625 ElimStorePlain]: treesize reduction 55, result has 39.6 percent of original size [2020-11-29 19:18:55,220 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:18:55,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:36 [2020-11-29 19:18:55,272 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-11-29 19:18:55,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 19:18:55,290 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 23 [2020-11-29 19:18:55,291 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-29 19:18:55,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-29 19:18:55,327 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:18:55,327 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 52 [2020-11-29 19:18:55,329 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:18:55,330 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:18:55,340 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 23 [2020-11-29 19:18:55,340 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-29 19:18:55,417 INFO L625 ElimStorePlain]: treesize reduction 111, result has 36.9 percent of original size [2020-11-29 19:18:55,417 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-29 19:18:55,417 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:378, output treesize:65 [2020-11-29 19:18:57,669 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 19:19:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-29 19:19:34,147 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-11-29 19:19:34,147 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 44 states and 56 transitions. cyclomatic complexity: 15 Second operand 12 states. [2020-11-29 19:20:03,171 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 44 states and 56 transitions. cyclomatic complexity: 15. Second operand 12 states. Result 108 states and 122 transitions. Complement of second has 30 states. [2020-11-29 19:20:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2020-11-29 19:20:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:20:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 30 transitions. [2020-11-29 19:20:03,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 30 transitions. Stem has 33 letters. Loop has 26 letters. [2020-11-29 19:20:03,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:03,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 30 transitions. Stem has 59 letters. Loop has 26 letters. [2020-11-29 19:20:03,175 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:03,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 30 transitions. Stem has 33 letters. Loop has 52 letters. [2020-11-29 19:20:03,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:03,176 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 108 states and 122 transitions. [2020-11-29 19:20:03,179 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:20:03,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 108 states to 72 states and 84 transitions. [2020-11-29 19:20:03,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2020-11-29 19:20:03,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2020-11-29 19:20:03,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 84 transitions. [2020-11-29 19:20:03,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:20:03,182 INFO L691 BuchiCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-11-29 19:20:03,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 84 transitions. [2020-11-29 19:20:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-11-29 19:20:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 19:20:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-11-29 19:20:03,188 INFO L714 BuchiCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-11-29 19:20:03,188 INFO L594 BuchiCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-11-29 19:20:03,188 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 19:20:03,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 65 transitions. [2020-11-29 19:20:03,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:20:03,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:20:03,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:20:03,191 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 19:20:03,191 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:20:03,191 INFO L794 eck$LassoCheckResult]: Stem: 2464#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2446#L-1 havoc main_#res;havoc main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet4, main_#t~nondet5, main_#t~mem7, main_#t~post8, main_#t~mem9, main_#t~mem10, main_#t~mem11, main_#t~mem12, main_#t~mem6, main_~pp~0.base, main_~pp~0.offset, main_~qq~0.base, main_~qq~0.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4);main_~pp~0.base, main_~pp~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnHeap(4);main_~qq~0.base, main_~qq~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset;call write~int(main_#t~nondet4, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~nondet4;call write~int(main_#t~nondet5, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~nondet5; 2447#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 2454#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 2474#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 2475#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 2481#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 2445#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 2457#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 2444#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 2441#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 2483#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 2489#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 2442#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 2483#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 2489#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 2442#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 2483#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 2440#L9 assume ~i < 0;call write~int(1 + ~i, ~op.base, ~op.offset, 4); 2443#recFINAL assume true; 2467#recEXIT >#31#return; 2448#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 2449#recFINAL assume true; 2496#recEXIT >#31#return; 2495#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 2494#recFINAL assume true; 2493#recEXIT >#31#return; 2480#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 2482#recFINAL assume true; 2479#recEXIT >#31#return; 2478#L15-1 call ULTIMATE.dealloc(~ip~0.base, ~ip~0.offset); 2477#recFINAL assume true; 2473#recEXIT >#33#return; 2461#L33-1 havoc main_#t~mem10;call main_#t~mem11 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem12 := read~int(main_~pp~0.base, main_~pp~0.offset, 4);call write~int(main_#t~mem11 + main_#t~mem12, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem11;havoc main_#t~mem12; 2462#L29-3 call main_#t~mem6 := read~int(main_~qq~0.base, main_~qq~0.offset, 4); 2469#L29-1 assume !!(main_#t~mem6 > 1);havoc main_#t~mem6;call main_#t~mem7 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);main_#t~post8 := main_#t~mem7;call write~int(main_#t~post8 - 1, main_~qq~0.base, main_~qq~0.offset, 4);havoc main_#t~mem7;havoc main_#t~post8;call main_#t~mem9 := read~int(main_~qq~0.base, main_~qq~0.offset, 4);call write~int(main_#t~mem9, main_~pp~0.base, main_~pp~0.offset, 4);havoc main_#t~mem9;call write~int(0, main_~qq~0.base, main_~qq~0.offset, 4);call main_#t~mem10 := read~int(main_~pp~0.base, main_~pp~0.offset, 4); 2465#L33 call rec(main_~pp~0.base, main_~pp~0.offset, main_#t~mem10);< 2466#recENTRY [2020-11-29 19:20:03,191 INFO L796 eck$LassoCheckResult]: Loop: 2466#recENTRY ~op.base, ~op.offset := #in~op.base, #in~op.offset;~i := #in~i; 2484#L9 assume !(~i < 0);call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4);~ip~0.base, ~ip~0.offset := #t~malloc1.base, #t~malloc1.offset; 2471#L15 call rec(~ip~0.base, ~ip~0.offset, ~i - 1);< 2466#recENTRY [2020-11-29 19:20:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:20:03,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1112092026, now seen corresponding path program 6 times [2020-11-29 19:20:03,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:20:03,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90245045] [2020-11-29 19:20:03,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:20:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:03,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:03,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:03,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:20:03,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:20:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 29945, now seen corresponding path program 3 times [2020-11-29 19:20:03,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:20:03,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253307082] [2020-11-29 19:20:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:20:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:03,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:03,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:03,267 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:20:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:20:03,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1044174624, now seen corresponding path program 7 times [2020-11-29 19:20:03,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:20:03,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596718809] [2020-11-29 19:20:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:20:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:03,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:20:03,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:20:03,319 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:20:04,015 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-11-29 19:20:04,465 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-11-29 19:20:05,045 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-11-29 19:20:05,191 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-11-29 19:20:05,335 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-29 19:20:05,439 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-11-29 19:20:05,872 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-11-29 19:20:05,983 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-11-29 19:20:06,119 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-29 19:20:06,275 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-29 19:20:15,061 WARN L193 SmtUtils]: Spent 8.78 s on a formula simplification. DAG size of input: 214 DAG size of output: 195 [2020-11-29 19:20:16,420 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 142 [2020-11-29 19:20:18,027 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 148 [2020-11-29 19:20:19,255 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 126 [2020-11-29 19:20:19,259 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:20:19,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:20:19,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:20:19,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:20:19,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:20:19,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:19,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:20:19,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:20:19,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_malloc_ex9.i_Iteration8_Lasso [2020-11-29 19:20:19,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:20:19,260 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:20:19,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,569 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-11-29 19:20:19,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:19,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:20:20,020 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-29 19:20:23,775 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2020-11-29 19:20:23,847 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:20:23,847 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:20:23,863 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 [2020-11-29 19:20:23,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:23,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:20:23,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:23,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:23,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:23,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:20:23,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:23,868 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:20:23,907 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 [2020-11-29 19:20:23,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:23,909 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:20:23,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:23,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:23,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:23,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:20:23,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:20:23,928 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:20:23,971 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 [2020-11-29 19:20:23,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:23,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:23,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:23,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:23,976 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:20:23,976 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:23,982 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:24,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:20:24,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:24,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:24,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:24,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:24,013 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:20:24,013 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:20:24,017 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 63 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 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:24,040 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 [2020-11-29 19:20:24,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:24,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:24,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:24,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:24,042 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:20:24,042 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:20:24,044 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 64 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 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:24,074 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 [2020-11-29 19:20:24,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:24,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:24,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:24,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:24,078 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:20:24,078 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:20:24,082 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 65 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 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:24,105 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 [2020-11-29 19:20:24,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:24,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:24,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:24,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:24,108 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:20:24,108 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:20:24,110 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:24,133 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 [2020-11-29 19:20:24,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:20:24,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:20:24,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:20:24,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:20:24,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:20:24,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:20:24,152 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:20:24,168 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-29 19:20:24,168 INFO L444 ModelExtractionUtils]: 1 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_76b578e4-26b4-46af-811f-6741947f93c4/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:20:24,172 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:20:24,173 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-29 19:20:24,174 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:20:24,174 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~i) = 2*rec_#in~i + 1 Supporting invariants [] [2020-11-29 19:20:24,196 INFO L297 tatePredicateManager]: 1 out of 1 supporting invariants were superfluous and have been removed [2020-11-29 19:20:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:20:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:24,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:20:24,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:20:24,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,317 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,318 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,319 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:24,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:20:24,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:20:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:20:24,376 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 [2020-11-29 19:20:24,376 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 65 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 19:20:24,447 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 65 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 66 states and 74 transitions. Complement of second has 12 states. [2020-11-29 19:20:24,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:20:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 19:20:24,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-29 19:20:24,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 37 letters. Loop has 3 letters. [2020-11-29 19:20:24,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:24,450 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:20:24,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:20:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:24,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:20:24,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:20:24,593 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,594 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,596 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:24,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:20:24,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:20:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:20:24,657 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 [2020-11-29 19:20:24,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 65 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 19:20:24,752 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 65 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 66 states and 74 transitions. Complement of second has 12 states. [2020-11-29 19:20:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:20:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 19:20:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-29 19:20:24,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 37 letters. Loop has 3 letters. [2020-11-29 19:20:24,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:24,754 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:20:24,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:20:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:24,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:20:24,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:20:24,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,885 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,886 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:20:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:20:24,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:20:24,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:20:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:20:24,942 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 [2020-11-29 19:20:24,942 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 65 transitions. cyclomatic complexity: 12 Second operand 5 states. [2020-11-29 19:20:25,077 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 65 transitions. cyclomatic complexity: 12. Second operand 5 states. Result 79 states and 87 transitions. Complement of second has 13 states. [2020-11-29 19:20:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:20:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 19:20:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2020-11-29 19:20:25,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 37 letters. Loop has 3 letters. [2020-11-29 19:20:25,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:25,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 40 letters. Loop has 3 letters. [2020-11-29 19:20:25,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:25,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 37 letters. Loop has 6 letters. [2020-11-29 19:20:25,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:20:25,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 87 transitions. [2020-11-29 19:20:25,082 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:20:25,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 0 states and 0 transitions. [2020-11-29 19:20:25,082 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:20:25,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:20:25,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:20:25,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:20:25,083 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:20:25,083 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:20:25,083 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:20:25,083 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 19:20:25,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:20:25,083 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:20:25,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:20:25,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:20:25 BoogieIcfgContainer [2020-11-29 19:20:25,089 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:20:25,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:20:25,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:20:25,089 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:20:25,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:29" (3/4) ... [2020-11-29 19:20:25,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:20:25,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:20:25,094 INFO L168 Benchmark]: Toolchain (without parser) took 417007.07 ms. Allocated memory was 98.6 MB in the beginning and 232.8 MB in the end (delta: 134.2 MB). Free memory was 64.9 MB in the beginning and 175.9 MB in the end (delta: -111.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:25,095 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 71.5 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:20:25,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.39 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 76.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:25,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.82 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 74.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:20:25,096 INFO L168 Benchmark]: Boogie Preprocessor took 28.36 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 73.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:25,096 INFO L168 Benchmark]: RCFGBuilder took 496.30 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 60.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:25,096 INFO L168 Benchmark]: BuchiAutomizer took 416052.83 ms. Allocated memory was 98.6 MB in the beginning and 232.8 MB in the end (delta: 134.2 MB). Free memory was 60.2 MB in the beginning and 175.9 MB in the end (delta: -115.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:20:25,097 INFO L168 Benchmark]: Witness Printer took 4.24 ms. Allocated memory is still 232.8 MB. Free memory is still 175.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:20:25,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 98.6 MB. Free memory was 71.5 MB in the beginning and 71.5 MB in the end (delta: 32.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.39 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 76.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.82 ms. Allocated memory is still 98.6 MB. Free memory was 76.4 MB in the beginning and 74.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.36 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 73.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 496.30 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 60.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 416052.83 ms. Allocated memory was 98.6 MB in the beginning and 232.8 MB in the end (delta: 134.2 MB). Free memory was 60.2 MB in the beginning and 175.9 MB in the end (delta: -115.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.24 ms. Allocated memory is still 232.8 MB. Free memory is still 175.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function unknown-#memory_int-unknown[qq][qq] and consists of 12 locations. One deterministic module has affine ranking function 2 * \old(i) + 1 and consists of 4 locations. One deterministic module has affine ranking function unknown-#memory_int-unknown[pp][pp] + unknown-#memory_int-unknown[qq][qq] and consists of 13 locations. One nondeterministic module has affine ranking function 2 * \old(i) + 1 and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 36 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 415.9s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 126.1s. Construction of modules took 114.7s. Büchi inclusion checks took 174.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 78 states and ocurred in iteration 4. Nontrivial modules had stage [1, 2, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 26/44 HoareTripleCheckerStatistics: 131 SDtfs, 162 SDslu, 373 SDs, 0 SdLazy, 1564 SolverSat, 151 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 114.7s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc2 concLT0 SILN0 SILU1 SILI0 SILT0 lasso4 LassoPreprocessingBenchmarks: Lassos: inital3019 mio100 ax100 hnf99 lsp98 ukn13 mio100 lsp37 div100 bol100 ite100 ukn100 eq162 hnf96 smp99 dnf1851 smp79 tf100 neg86 sie149 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 3476ms VariablesStem: 9 VariablesLoop: 8 DisjunctsStem: 64 DisjunctsLoop: 8 SupportingInvariants: 16 MotzkinApplications: 1168 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forcibly destroying the process Received shutdown request...