./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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 32bit --witnessprinter.graph.data.programhash c8e64c1324249ca9b9e3c019cfc2046542af7b26 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:49,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:49,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:49,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:49,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:49,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:49,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:49,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:49,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:49,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:49,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:49,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:49,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:49,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:49,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:49,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:49,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:49,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:49,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:49,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:49,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:49,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:49,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:49,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:49,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:49,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:49,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:49,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:49,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:49,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:49,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:49,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:49,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:49,637 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:49,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:49,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:49,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:49,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:49,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:49,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:49,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:49,644 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 02:57:49,689 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:49,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:49,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:49,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:49,691 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:49,691 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:57:49,691 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:57:49,691 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:57:49,692 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:57:49,692 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:57:49,693 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:57:49,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:49,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:49,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:57:49,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:49,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:49,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:49,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:57:49,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:57:49,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:57:49,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:49,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:49,696 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:57:49,696 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:49,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:57:49,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:49,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:49,697 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:57:49,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:49,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:49,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:49,699 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:57:49,700 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:57:49,700 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_d7214244-0349-4ea3-b7f1-945b7a69124b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e64c1324249ca9b9e3c019cfc2046542af7b26 [2020-11-28 02:57:49,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:50,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:50,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:50,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:50,028 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:50,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2020-11-28 02:57:50,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/data/dbd20c6ef/034777ef410b45c1b813445816f15bf3/FLAGd770b64cb [2020-11-28 02:57:50,680 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:50,681 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/sv-benchmarks/c/array-memsafety/add_last-alloca-1.i [2020-11-28 02:57:50,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/data/dbd20c6ef/034777ef410b45c1b813445816f15bf3/FLAGd770b64cb [2020-11-28 02:57:51,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/data/dbd20c6ef/034777ef410b45c1b813445816f15bf3 [2020-11-28 02:57:51,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:51,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:51,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:51,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:51,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:51,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9fa3ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51, skipping insertion in model container [2020-11-28 02:57:51,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:51,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:51,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:51,441 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:51,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:51,563 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:51,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51 WrapperNode [2020-11-28 02:57:51,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:51,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:51,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:51,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:51,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:51,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:51,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:51,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:51,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... [2020-11-28 02:57:51,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:51,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:51,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:51,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:51,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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 [2020-11-28 02:57:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:57:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:51,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:51,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:52,115 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:52,116 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 02:57:52,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:52 BoogieIcfgContainer [2020-11-28 02:57:52,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:52,118 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:57:52,118 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:57:52,122 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:57:52,123 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:52,123 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:57:51" (1/3) ... [2020-11-28 02:57:52,125 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b633496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:52, skipping insertion in model container [2020-11-28 02:57:52,125 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:52,125 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:51" (2/3) ... [2020-11-28 02:57:52,125 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b633496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:57:52, skipping insertion in model container [2020-11-28 02:57:52,125 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:57:52,126 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:52" (3/3) ... [2020-11-28 02:57:52,127 INFO L373 chiAutomizerObserver]: Analyzing ICFG add_last-alloca-1.i [2020-11-28 02:57:52,184 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:57:52,185 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:57:52,185 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:57:52,185 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:52,185 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:52,185 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:57:52,185 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:52,185 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:57:52,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-28 02:57:52,240 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-28 02:57:52,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:52,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:52,246 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 02:57:52,246 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:57:52,247 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:57:52,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2020-11-28 02:57:52,249 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-28 02:57:52,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:52,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:52,250 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 02:57:52,250 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:57:52,257 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L515true assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 5#L515-2true call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 14#L517true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 15#L520-3true [2020-11-28 02:57:52,257 INFO L796 eck$LassoCheckResult]: Loop: 15#L520-3true assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 12#L520-2true main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 15#L520-3true [2020-11-28 02:57:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:52,262 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2020-11-28 02:57:52,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:52,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104921565] [2020-11-28 02:57:52,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,437 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:52,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:52,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2020-11-28 02:57:52,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:52,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629186445] [2020-11-28 02:57:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,480 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,486 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:52,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815563, now seen corresponding path program 1 times [2020-11-28 02:57:52,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:52,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554775283] [2020-11-28 02:57:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:52,552 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:52,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:52,811 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-11-28 02:57:52,897 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:52,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:52,900 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:52,900 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:52,901 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:52,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:52,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:52,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:52,901 INFO L133 ssoRankerPreferences]: Filename of dumped script: add_last-alloca-1.i_Iteration1_Lasso [2020-11-28 02:57:52,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:52,902 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:52,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:52,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:53,484 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:53,488 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:57:53,497 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 [2020-11-28 02:57:53,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:53,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,503 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:53,503 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:53,505 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,547 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 [2020-11-28 02:57:53,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:53,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:53,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:53,554 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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 [2020-11-28 02:57:53,586 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 [2020-11-28 02:57:53,587 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,587 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:53,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,588 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:53,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:57:53,594 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,625 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 [2020-11-28 02:57:53,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:53,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:53,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:57:53,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,660 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:57:53,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,666 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:53,667 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:53,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,722 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 [2020-11-28 02:57:53,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,727 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:53,727 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 [2020-11-28 02:57:53,732 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,772 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 [2020-11-28 02:57:53,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:53,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:53,776 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 [2020-11-28 02:57:53,778 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,826 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 [2020-11-28 02:57:53,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,828 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,831 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:53,832 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:53,836 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,876 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 [2020-11-28 02:57:53,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:53,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:53,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:53,882 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,930 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:57:53,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:53,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:53,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:53,935 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:53,980 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 [2020-11-28 02:57:53,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:53,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:53,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:53,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:53,993 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:53,993 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:54,001 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:54,043 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 [2020-11-28 02:57:54,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:54,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:54,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:54,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:54,062 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:54,062 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:57:54,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:54,142 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-28 02:57:54,142 INFO L444 ModelExtractionUtils]: 13 out of 25 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:54,176 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:54,179 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:57:54,180 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:54,180 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2020-11-28 02:57:54,226 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2020-11-28 02:57:54,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:54,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:54,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:54,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:54,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:54,409 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 02:57:54,410 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 3 states. [2020-11-28 02:57:54,473 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 3 states. Result 31 states and 41 transitions. Complement of second has 7 states. [2020-11-28 02:57:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 02:57:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:57:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2020-11-28 02:57:54,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 02:57:54,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:54,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-28 02:57:54,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:54,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-28 02:57:54,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:54,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 41 transitions. [2020-11-28 02:57:54,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:57:54,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 11 states and 14 transitions. [2020-11-28 02:57:54,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 02:57:54,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-28 02:57:54,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2020-11-28 02:57:54,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:54,496 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-28 02:57:54,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2020-11-28 02:57:54,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-28 02:57:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:57:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-11-28 02:57:54,518 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 02:57:54,518 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 02:57:54,518 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:57:54,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-11-28 02:57:54,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:57:54,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:54,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:54,519 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:57:54,519 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:57:54,519 INFO L794 eck$LassoCheckResult]: Stem: 107#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 104#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 105#L515 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 106#L515-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 110#L517 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 113#L520-3 assume !(main_~k~0 < main_~length~0); 109#L525-2 [2020-11-28 02:57:54,520 INFO L796 eck$LassoCheckResult]: Loop: 109#L525-2 call main_#t~mem6 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4); 108#L525 assume !!(main_#t~mem6 != main_#t~mem7);havoc main_#t~mem6;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem9 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4);call write~int(main_#t~mem8 + main_#t~mem9, main_~a~0.base, main_~a~0.offset, 4);havoc main_#t~mem8;havoc main_#t~mem9;main_#t~post10.base, main_#t~post10.offset := main_~a~0.base, main_~a~0.offset;main_~a~0.base, main_~a~0.offset := main_#t~post10.base, 4 + main_#t~post10.offset;havoc main_#t~post10.base, main_#t~post10.offset; 109#L525-2 [2020-11-28 02:57:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:54,520 INFO L82 PathProgramCache]: Analyzing trace with hash 889568363, now seen corresponding path program 1 times [2020-11-28 02:57:54,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:54,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98340321] [2020-11-28 02:57:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:54,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98340321] [2020-11-28 02:57:54,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:54,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:54,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138472302] [2020-11-28 02:57:54,608 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 02:57:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:54,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 1 times [2020-11-28 02:57:54,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:54,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764716781] [2020-11-28 02:57:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:54,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:54,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:54,638 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:54,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:54,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:54,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:54,746 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-28 02:57:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:54,784 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-11-28 02:57:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:54,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2020-11-28 02:57:54,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:57:54,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2020-11-28 02:57:54,786 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 02:57:54,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 02:57:54,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2020-11-28 02:57:54,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:54,786 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-11-28 02:57:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2020-11-28 02:57:54,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-28 02:57:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 02:57:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-11-28 02:57:54,788 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 02:57:54,788 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-11-28 02:57:54,788 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:57:54,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2020-11-28 02:57:54,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:57:54,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:54,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:54,789 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:54,789 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:57:54,789 INFO L794 eck$LassoCheckResult]: Stem: 134#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 132#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 133#L515 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 135#L515-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 138#L517 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 141#L520-3 assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 139#L520-2 main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 140#L520-3 assume !(main_~k~0 < main_~length~0); 137#L525-2 [2020-11-28 02:57:54,789 INFO L796 eck$LassoCheckResult]: Loop: 137#L525-2 call main_#t~mem6 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4); 136#L525 assume !!(main_#t~mem6 != main_#t~mem7);havoc main_#t~mem6;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem9 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4);call write~int(main_#t~mem8 + main_#t~mem9, main_~a~0.base, main_~a~0.offset, 4);havoc main_#t~mem8;havoc main_#t~mem9;main_#t~post10.base, main_#t~post10.offset := main_~a~0.base, main_~a~0.offset;main_~a~0.base, main_~a~0.offset := main_#t~post10.base, 4 + main_#t~post10.offset;havoc main_#t~post10.base, main_#t~post10.offset; 137#L525-2 [2020-11-28 02:57:54,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:54,790 INFO L82 PathProgramCache]: Analyzing trace with hash 176707625, now seen corresponding path program 1 times [2020-11-28 02:57:54,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:54,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705952494] [2020-11-28 02:57:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:54,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:54,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:54,824 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:54,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 2 times [2020-11-28 02:57:54,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:54,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164712620] [2020-11-28 02:57:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:54,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:54,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:54,852 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1982663218, now seen corresponding path program 1 times [2020-11-28 02:57:54,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:54,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137138036] [2020-11-28 02:57:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:55,106 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-28 02:57:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:55,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137138036] [2020-11-28 02:57:55,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974858189] [2020-11-28 02:57:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 02:57:55,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:55,419 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2020-11-28 02:57:55,419 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:55,439 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:55,441 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:57:55,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2020-11-28 02:57:55,565 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-28 02:57:55,570 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:55,570 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 10 [2020-11-28 02:57:55,571 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:57:55,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:57:55,594 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 02:57:55,594 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:3 [2020-11-28 02:57:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:55,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:55,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-11-28 02:57:55,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582903645] [2020-11-28 02:57:55,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:55,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 02:57:55,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-11-28 02:57:55,671 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand 12 states. [2020-11-28 02:57:55,977 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2020-11-28 02:57:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:56,078 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-28 02:57:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:57:56,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 17 transitions. [2020-11-28 02:57:56,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:57:56,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 15 transitions. [2020-11-28 02:57:56,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 02:57:56,080 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 02:57:56,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2020-11-28 02:57:56,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:56,081 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-28 02:57:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2020-11-28 02:57:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 02:57:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:57:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-28 02:57:56,082 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-28 02:57:56,082 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-28 02:57:56,082 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:57:56,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-11-28 02:57:56,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 02:57:56,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:57:56,083 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:57:56,083 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:56,084 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 02:57:56,084 INFO L794 eck$LassoCheckResult]: Stem: 211#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 209#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~malloc3.base, main_#t~malloc3.offset, main_#t~nondet5, main_#t~post4, main_~k~0, main_#t~mem8, main_#t~mem9, main_#t~post10.base, main_#t~post10.offset, main_#t~mem6, main_#t~mem7, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset, main_~a~0.base, main_~a~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet2;havoc main_#t~nondet2; 210#L515 assume !(main_~length~0 < 1 || main_~length~0 >= 536870911); 212#L515-2 call main_#t~malloc3.base, main_#t~malloc3.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc3.base, main_#t~malloc3.offset; 215#L517 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~a~0.base, main_~a~0.offset := main_~arr~0.base, main_~arr~0.offset;main_~k~0 := 0; 218#L520-3 assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 216#L520-2 main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 217#L520-3 assume !!(main_~k~0 < main_~length~0);call write~int(main_#t~nondet5, main_~arr~0.base, main_~arr~0.offset + 4 * main_~k~0, 4);havoc main_#t~nondet5; 219#L520-2 main_#t~post4 := main_~k~0;main_~k~0 := 1 + main_#t~post4;havoc main_#t~post4; 220#L520-3 assume !(main_~k~0 < main_~length~0); 214#L525-2 [2020-11-28 02:57:56,084 INFO L796 eck$LassoCheckResult]: Loop: 214#L525-2 call main_#t~mem6 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem7 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4); 213#L525 assume !!(main_#t~mem6 != main_#t~mem7);havoc main_#t~mem6;havoc main_#t~mem7;call main_#t~mem8 := read~int(main_~a~0.base, main_~a~0.offset, 4);call main_#t~mem9 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~length~0 - 4, 4);call write~int(main_#t~mem8 + main_#t~mem9, main_~a~0.base, main_~a~0.offset, 4);havoc main_#t~mem8;havoc main_#t~mem9;main_#t~post10.base, main_#t~post10.offset := main_~a~0.base, main_~a~0.offset;main_~a~0.base, main_~a~0.offset := main_#t~post10.base, 4 + main_#t~post10.offset;havoc main_#t~post10.base, main_#t~post10.offset; 214#L525-2 [2020-11-28 02:57:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:56,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1982661529, now seen corresponding path program 2 times [2020-11-28 02:57:56,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:56,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240549247] [2020-11-28 02:57:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:56,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:56,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:56,108 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1958, now seen corresponding path program 3 times [2020-11-28 02:57:56,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161599397] [2020-11-28 02:57:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:56,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:56,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:56,122 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:56,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:56,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1627751052, now seen corresponding path program 2 times [2020-11-28 02:57:56,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:56,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544606295] [2020-11-28 02:57:56,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:56,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:56,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:56,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:56,483 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2020-11-28 02:57:56,558 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:57:56,558 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:57:56,558 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:57:56,558 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:57:56,558 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:57:56,558 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:56,558 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:57:56,559 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:57:56,559 INFO L133 ssoRankerPreferences]: Filename of dumped script: add_last-alloca-1.i_Iteration4_Lasso [2020-11-28 02:57:56,559 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:57:56,559 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:57:56,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,718 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-11-28 02:57:56,837 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-28 02:57:56,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:56,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:57:57,375 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:57:57,375 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:57,413 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 [2020-11-28 02:57:57,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:57,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:57,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:57,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:57,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:57,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:57:57,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:57,425 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:57,469 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 [2020-11-28 02:57:57,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:57,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:57,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:57,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:57,481 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:57,482 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:57,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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 [2020-11-28 02:57:57,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:57:57,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:57,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:57,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:57,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:57,528 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:57,528 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:57:57,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:57,569 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 [2020-11-28 02:57:57,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:57,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:57:57,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:57,573 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 02:57:57,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:57,577 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 02:57:57,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:57:57,582 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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 [2020-11-28 02:57:57,607 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 [2020-11-28 02:57:57,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:57,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:57,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:57,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:57,610 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:57,610 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:57:57,613 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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 [2020-11-28 02:57:57,637 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 [2020-11-28 02:57:57,638 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:57:57,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:57:57,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:57:57,639 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:57:57,649 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:57:57,649 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:57:57,664 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:57:57,736 INFO L443 ModelExtractionUtils]: Simplification made 22 calls to the SMT solver. [2020-11-28 02:57:57,736 INFO L444 ModelExtractionUtils]: 5 out of 25 variables were initially zero. Simplification set additionally 17 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d7214244-0349-4ea3-b7f1-945b7a69124b/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) [2020-11-28 02:57:57,765 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:57:57,768 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:57:57,768 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:57:57,769 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0.offset, v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2) = -1*ULTIMATE.start_main_~a~0.offset + 1*v_rep(select #length ULTIMATE.start_main_~arr~0.base)_2 Supporting invariants [] [2020-11-28 02:57:57,802 INFO L297 tatePredicateManager]: 5 out of 6 supporting invariants were superfluous and have been removed [2020-11-28 02:57:57,804 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:57:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:57,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:57,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:57,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:57:57,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:57,891 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2020-11-28 02:57:57,891 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 4 states. [2020-11-28 02:57:57,929 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 14 states and 17 transitions. Complement of second has 5 states. [2020-11-28 02:57:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:57:57,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:57:57,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 02:57:57,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-28 02:57:57,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:57,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-28 02:57:57,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:57,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-28 02:57:57,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:57:57,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2020-11-28 02:57:57,931 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:57,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2020-11-28 02:57:57,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:57:57,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:57:57,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:57:57,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:57:57,931 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:57,932 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:57,932 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:57,932 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 02:57:57,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:57,932 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:57:57,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:57:57,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:57:57 BoogieIcfgContainer [2020-11-28 02:57:57,937 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:57:57,937 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:57,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:57,937 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:57,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:52" (3/4) ... [2020-11-28 02:57:57,940 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:57:57,940 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:57,941 INFO L168 Benchmark]: Toolchain (without parser) took 6910.32 ms. Allocated memory was 94.4 MB in the beginning and 142.6 MB in the end (delta: 48.2 MB). Free memory was 65.6 MB in the beginning and 61.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:57,942 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 94.4 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:57,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.36 ms. Allocated memory is still 94.4 MB. Free memory was 65.4 MB in the beginning and 62.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:57,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.18 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:57,943 INFO L168 Benchmark]: Boogie Preprocessor took 24.66 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 59.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:57,944 INFO L168 Benchmark]: RCFGBuilder took 488.18 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 45.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:57,944 INFO L168 Benchmark]: BuchiAutomizer took 5818.60 ms. Allocated memory was 94.4 MB in the beginning and 142.6 MB in the end (delta: 48.2 MB). Free memory was 45.3 MB in the beginning and 61.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:57,945 INFO L168 Benchmark]: Witness Printer took 3.49 ms. Allocated memory is still 142.6 MB. Free memory is still 61.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:57,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 94.4 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 530.36 ms. Allocated memory is still 94.4 MB. Free memory was 65.4 MB in the beginning and 62.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.18 ms. Allocated memory is still 94.4 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.66 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 59.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 488.18 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 45.3 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5818.60 ms. Allocated memory was 94.4 MB in the beginning and 142.6 MB in the end (delta: 48.2 MB). Free memory was 45.3 MB in the beginning and 61.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.49 ms. Allocated memory is still 142.6 MB. Free memory is still 61.2 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 #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * k + length and consists of 5 locations. One deterministic module has affine ranking function -1 * a + unknown-#length-unknown[arr] and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.7s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 30 SDtfs, 58 SDslu, 17 SDs, 0 SdLazy, 87 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital144 mio100 ax113 hnf98 lsp83 ukn77 mio100 lsp60 div100 bol100 ite100 ukn100 eq163 hnf91 smp96 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...