./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-dietlibc/strcspn.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-dietlibc/strcspn.i -s /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash eaca3e09b762fe94634aa0b3e6a04213782212a5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:56:20,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:20,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:20,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:20,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:20,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:20,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:20,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:20,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:20,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:20,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:20,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:20,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:20,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:20,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:20,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:20,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:20,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:20,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:20,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:20,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:20,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:20,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:20,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:20,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:20,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:20,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:20,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:20,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:20,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:20,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:20,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:20,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:20,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:20,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:20,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:20,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:20,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:20,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:20,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:20,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:20,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 02:56:20,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:20,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:20,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:20,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:20,638 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:20,638 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 02:56:20,639 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 02:56:20,639 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 02:56:20,639 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 02:56:20,639 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 02:56:20,639 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 02:56:20,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:20,640 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:56:20,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:20,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:20,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 02:56:20,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 02:56:20,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 02:56:20,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:20,641 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 02:56:20,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:20,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 02:56:20,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:20,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:20,642 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 02:56:20,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:20,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:20,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:20,644 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 02:56:20,645 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 02:56:20,645 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_dbdfce1d-e96d-4333-b837-0eb648be4177/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaca3e09b762fe94634aa0b3e6a04213782212a5 [2020-11-28 02:56:20,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:20,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:20,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:20,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:20,994 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:20,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/../../sv-benchmarks/c/termination-dietlibc/strcspn.i [2020-11-28 02:56:21,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/data/1dea3f82a/f6dd690838854bdcb6a3319052d96002/FLAG28eb81588 [2020-11-28 02:56:21,612 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:21,620 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/sv-benchmarks/c/termination-dietlibc/strcspn.i [2020-11-28 02:56:21,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/data/1dea3f82a/f6dd690838854bdcb6a3319052d96002/FLAG28eb81588 [2020-11-28 02:56:21,918 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/data/1dea3f82a/f6dd690838854bdcb6a3319052d96002 [2020-11-28 02:56:21,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:21,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:21,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:21,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:21,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:21,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:21,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3485f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:21, skipping insertion in model container [2020-11-28 02:56:21,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:21" (1/1) ... [2020-11-28 02:56:21,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:21,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:22,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,296 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:22,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:22,383 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:22,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22 WrapperNode [2020-11-28 02:56:22,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:22,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:22,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:22,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:22,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:22,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:22,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... [2020-11-28 02:56:22,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:22,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:22,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:22,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:22,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:56:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:56:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:56:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:22,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:22,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:22,926 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 02:56:22,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22 BoogieIcfgContainer [2020-11-28 02:56:22,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:22,930 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 02:56:22,931 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 02:56:22,950 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 02:56:22,951 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,952 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:56:21" (1/3) ... [2020-11-28 02:56:22,953 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@322483f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,953 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:22" (2/3) ... [2020-11-28 02:56:22,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@322483f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:56:22, skipping insertion in model container [2020-11-28 02:56:22,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 02:56:22,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/3) ... [2020-11-28 02:56:22,957 INFO L373 chiAutomizerObserver]: Analyzing ICFG strcspn.i [2020-11-28 02:56:23,033 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 02:56:23,034 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 02:56:23,034 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 02:56:23,034 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:23,034 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:23,034 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 02:56:23,034 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:23,034 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 02:56:23,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-28 02:56:23,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 02:56:23,066 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:23,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:23,072 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:56:23,072 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:23,072 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 02:56:23,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-28 02:56:23,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 02:56:23,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:23,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:23,075 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:56:23,075 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-28 02:56:23,084 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 8#L-1true havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 12#L519true assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 6#L523true assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 18#L510-4true [2020-11-28 02:56:23,084 INFO L796 eck$LassoCheckResult]: Loop: 18#L510-4true call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 11#L510-1true assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 15#L511-4true assume !true; 19#L511-5true strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 16#L510-3true strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 18#L510-4true [2020-11-28 02:56:23,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,091 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-11-28 02:56:23,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900256300] [2020-11-28 02:56:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,292 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,297 INFO L82 PathProgramCache]: Analyzing trace with hash 44069891, now seen corresponding path program 1 times [2020-11-28 02:56:23,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203049205] [2020-11-28 02:56:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:23,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203049205] [2020-11-28 02:56:23,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:23,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:23,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264267616] [2020-11-28 02:56:23,368 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-28 02:56:23,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:23,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:23,386 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-28 02:56:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:23,394 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-11-28 02:56:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:23,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-11-28 02:56:23,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 02:56:23,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 13 transitions. [2020-11-28 02:56:23,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-28 02:56:23,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 02:56:23,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2020-11-28 02:56:23,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:23,407 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-28 02:56:23,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2020-11-28 02:56:23,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 02:56:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 02:56:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-28 02:56:23,436 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-28 02:56:23,436 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-28 02:56:23,436 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 02:56:23,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2020-11-28 02:56:23,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2020-11-28 02:56:23,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:23,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:23,439 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 02:56:23,439 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:23,440 INFO L794 eck$LassoCheckResult]: Stem: 47#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 42#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 43#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 50#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 53#L510-4 [2020-11-28 02:56:23,440 INFO L796 eck$LassoCheckResult]: Loop: 53#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 48#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 49#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 44#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 45#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 52#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 53#L510-4 [2020-11-28 02:56:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,451 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2020-11-28 02:56:23,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406069093] [2020-11-28 02:56:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,524 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1365737035, now seen corresponding path program 1 times [2020-11-28 02:56:23,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114566231] [2020-11-28 02:56:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,562 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:23,564 INFO L82 PathProgramCache]: Analyzing trace with hash 736220402, now seen corresponding path program 1 times [2020-11-28 02:56:23,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:23,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005343722] [2020-11-28 02:56:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:23,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:23,689 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:23,802 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-11-28 02:56:24,602 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-11-28 02:56:24,786 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-28 02:56:24,798 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:24,798 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:24,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:24,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:24,799 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:24,799 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:24,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:24,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:24,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration2_Lasso [2020-11-28 02:56:24,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:24,800 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:24,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:24,843 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 02:56:24,851 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 02:56:24,868 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 02:56:24,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:24,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:24,895 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 02:56:24,900 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 02:56:24,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:24,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:24,920 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 02:56:24,933 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 02:56:24,939 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 02:56:25,402 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-11-28 02:56:25,570 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-11-28 02:56:25,572 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 02:56:25,577 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 02:56:25,582 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 02:56:25,587 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 02:56:26,286 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:26,294 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,306 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 02:56:26,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,313 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:26,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,345 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,345 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,352 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:26,388 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:26,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,392 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,417 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 02:56:26,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,419 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,419 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,419 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,430 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,430 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,435 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:26,476 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 02:56:26,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,490 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,522 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 02:56:26,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,527 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,551 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 02:56:26,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,557 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,584 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 02:56:26,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,616 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 02:56:26,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,623 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,623 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,635 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,659 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 02:56:26,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,671 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,698 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 02:56:26,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,700 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,701 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,723 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 02:56:26,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:26,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:26,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:26,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,749 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 02:56:26,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,753 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,753 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,760 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:26,781 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 02:56:26,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:26,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:26,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:26,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:26,794 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:26,794 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:26,804 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:26,996 INFO L443 ModelExtractionUtils]: Simplification made 9 calls to the SMT solver. [2020-11-28 02:56:26,996 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_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:27,026 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:27,030 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:27,031 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:27,031 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1, ULTIMATE.start_strcspn_~s.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc10.base)_1 - 1*ULTIMATE.start_strcspn_~s.offset Supporting invariants [] [2020-11-28 02:56:27,116 INFO L297 tatePredicateManager]: 14 out of 15 supporting invariants were superfluous and have been removed [2020-11-28 02:56:27,127 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:56:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:27,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:27,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:27,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:27,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:27,320 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 02:56:27,323 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 02:56:27,324 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-11-28 02:56:27,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 20 states and 23 transitions. Complement of second has 5 states. [2020-11-28 02:56:27,423 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 02:56:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 02:56:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2020-11-28 02:56:27,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 02:56:27,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 02:56:27,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-28 02:56:27,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:27,427 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-11-28 02:56:27,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:27,429 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 18 states and 21 transitions. [2020-11-28 02:56:27,429 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-28 02:56:27,429 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 02:56:27,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2020-11-28 02:56:27,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:56:27,430 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 02:56:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2020-11-28 02:56:27,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 02:56:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 02:56:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-28 02:56:27,433 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 02:56:27,433 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 02:56:27,433 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 02:56:27,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2020-11-28 02:56:27,437 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:27,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:27,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:27,439 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 02:56:27,439 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:56:27,439 INFO L794 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 192#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 193#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 204#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 207#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 200#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 201#L511-4 [2020-11-28 02:56:27,439 INFO L796 eck$LassoCheckResult]: Loop: 201#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 194#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 195#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 205#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 201#L511-4 [2020-11-28 02:56:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash 889571309, now seen corresponding path program 1 times [2020-11-28 02:56:27,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:27,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206708542] [2020-11-28 02:56:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,465 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,498 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 1 times [2020-11-28 02:56:27,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:27,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006342618] [2020-11-28 02:56:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,524 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:27,525 INFO L82 PathProgramCache]: Analyzing trace with hash 736222132, now seen corresponding path program 1 times [2020-11-28 02:56:27,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:27,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110690976] [2020-11-28 02:56:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,546 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:27,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:27,592 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:28,108 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 96 [2020-11-28 02:56:28,267 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-28 02:56:28,269 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:28,270 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:28,270 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:28,270 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:28,270 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:28,270 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:28,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:28,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:28,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration3_Lasso [2020-11-28 02:56:28,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:28,270 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:28,274 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 02:56:28,282 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 02:56:28,686 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-11-28 02:56:28,757 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 02:56:28,761 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 02:56:28,765 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 02:56:28,768 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 02:56:28,772 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 02:56:28,775 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 02:56:28,778 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 02:56:28,781 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 02:56:28,783 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 02:56:28,786 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 02:56:28,790 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 02:56:28,796 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 02:56:28,800 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 02:56:28,803 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 02:56:28,805 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 02:56:29,379 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:29,379 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:29,388 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:29,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:29,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:29,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:29,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:29,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:29,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:29,391 INFO L402 nArgumentSynthesizer]: A total of 0 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 02:56:29,396 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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) [2020-11-28 02:56:29,436 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 02:56:29,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:29,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:29,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:29,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:29,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:29,455 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:29,475 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:29,544 INFO L443 ModelExtractionUtils]: Simplification made 21 calls to the SMT solver. [2020-11-28 02:56:29,545 INFO L444 ModelExtractionUtils]: 25 out of 46 variables were initially zero. Simplification set additionally 17 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:29,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:56:29,549 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:29,549 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:29,549 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2, ULTIMATE.start_strcspn_~reject.offset) = -1*ULTIMATE.start_strcspn_~i~0 + 1*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_2 - 1*ULTIMATE.start_strcspn_~reject.offset Supporting invariants [] [2020-11-28 02:56:29,658 INFO L297 tatePredicateManager]: 16 out of 16 supporting invariants were superfluous and have been removed [2020-11-28 02:56:29,660 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:56:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:56:29,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:29,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:56:29,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:29,752 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 02:56:29,753 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 02:56:29,753 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 02:56:29,796 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 45 states and 51 transitions. Complement of second has 5 states. [2020-11-28 02:56:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 02:56:29,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2020-11-28 02:56:29,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 02:56:29,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:29,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-28 02:56:29,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:29,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 6 letters. Loop has 8 letters. [2020-11-28 02:56:29,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:29,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 51 transitions. [2020-11-28 02:56:29,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:29,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 29 states and 33 transitions. [2020-11-28 02:56:29,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 02:56:29,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 02:56:29,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 33 transitions. [2020-11-28 02:56:29,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:56:29,801 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-11-28 02:56:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 33 transitions. [2020-11-28 02:56:29,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-11-28 02:56:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 02:56:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-28 02:56:29,803 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-28 02:56:29,803 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-28 02:56:29,803 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 02:56:29,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2020-11-28 02:56:29,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:29,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:29,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:29,804 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:29,804 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:56:29,804 INFO L794 eck$LassoCheckResult]: Stem: 376#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 370#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 371#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 381#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 384#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 379#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 380#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 393#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 392#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 387#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 388#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 377#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 378#L511-4 [2020-11-28 02:56:29,804 INFO L796 eck$LassoCheckResult]: Loop: 378#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 372#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 373#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 382#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 378#L511-4 [2020-11-28 02:56:29,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1161797001, now seen corresponding path program 2 times [2020-11-28 02:56:29,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368765086] [2020-11-28 02:56:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:29,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:29,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:29,855 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:29,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 2 times [2020-11-28 02:56:29,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484020991] [2020-11-28 02:56:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:29,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:29,876 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:29,878 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:29,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -967302850, now seen corresponding path program 1 times [2020-11-28 02:56:29,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:29,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144958964] [2020-11-28 02:56:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144958964] [2020-11-28 02:56:30,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164542687] [2020-11-28 02:56:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:30,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 02:56:30,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:30,268 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-28 02:56:30,270 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 02:56:30,272 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 02:56:30,273 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 02:56:30,273 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-11-28 02:56:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:30,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:56:30,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-28 02:56:30,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706158042] [2020-11-28 02:56:30,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:30,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:56:30,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:56:30,330 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 8 states. [2020-11-28 02:56:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:30,401 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-11-28 02:56:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:30,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 51 transitions. [2020-11-28 02:56:30,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:30,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 36 states and 39 transitions. [2020-11-28 02:56:30,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-28 02:56:30,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-28 02:56:30,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 39 transitions. [2020-11-28 02:56:30,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:56:30,405 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-28 02:56:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 39 transitions. [2020-11-28 02:56:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-28 02:56:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:56:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-28 02:56:30,408 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-28 02:56:30,408 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-28 02:56:30,408 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 02:56:30,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2020-11-28 02:56:30,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:30,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:30,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:30,410 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:30,410 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:56:30,410 INFO L794 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 502#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 503#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 513#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 517#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 511#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 512#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 506#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 507#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 515#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 516#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 522#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 521#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 518#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 519#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 509#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 510#L511-4 [2020-11-28 02:56:30,410 INFO L796 eck$LassoCheckResult]: Loop: 510#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 504#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 505#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 514#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 510#L511-4 [2020-11-28 02:56:30,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1375356158, now seen corresponding path program 2 times [2020-11-28 02:56:30,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101338603] [2020-11-28 02:56:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:30,424 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:30,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:30,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:30,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 3 times [2020-11-28 02:56:30,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624616678] [2020-11-28 02:56:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:30,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:30,473 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:30,475 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1858115515, now seen corresponding path program 3 times [2020-11-28 02:56:30,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:30,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896724351] [2020-11-28 02:56:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:30,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:30,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:30,537 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:31,259 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 140 [2020-11-28 02:56:31,414 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-28 02:56:31,416 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:31,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:31,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:31,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:31,416 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:31,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:31,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:31,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:31,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration5_Lasso [2020-11-28 02:56:31,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:31,417 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:31,420 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 02:56:31,441 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 02:56:31,456 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 02:56:31,471 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 02:56:31,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:31,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:31,492 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 02:56:31,500 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 02:56:31,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:31,506 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 02:56:31,513 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 02:56:31,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:31,546 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 02:56:31,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:31,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:31,564 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 02:56:32,254 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2020-11-28 02:56:32,415 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-11-28 02:56:32,416 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 02:56:32,818 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-11-28 02:56:33,179 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-11-28 02:56:33,392 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:33,392 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:33,398 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 02:56:33,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,401 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:33,401 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:33,408 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/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 02:56:33,452 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:33,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,460 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,489 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 02:56:33,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,491 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,514 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 02:56:33,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,518 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,540 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 02:56:33,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,542 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,542 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,543 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:33,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,568 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:33,569 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:33,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:33,623 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 02:56:33,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,626 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,628 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,654 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 02:56:33,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,656 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,660 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,686 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 02:56:33,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,688 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,689 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:33,712 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,712 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,712 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,712 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,736 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 02:56:33,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,739 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,763 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:33,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,766 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,789 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 02:56:33,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,793 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,822 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 02:56:33,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:33,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:33,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:33,826 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,850 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 02:56:33,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,853 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:33,853 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:33,855 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:33,879 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 02:56:33,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:33,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:33,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:33,882 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:33,882 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:33,901 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:33,940 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 02:56:33,942 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:33,942 INFO L203 nArgumentSynthesizer]: 12 stem disjuncts [2020-11-28 02:56:33,942 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-11-28 02:56:33,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,047 INFO L401 nArgumentSynthesizer]: We have 136 Motzkin's Theorem applications. [2020-11-28 02:56:34,047 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-11-28 02:56:34,159 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,182 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 02:56:34,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:34,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:34,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:34,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:34,186 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:34,186 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:34,189 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,212 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 02:56:34,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:34,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:34,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:34,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:34,217 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:34,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:34,222 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,249 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 02:56:34,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:34,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:34,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:34,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:34,258 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:34,258 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:34,268 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,290 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 02:56:34,291 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:34,291 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:34,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:34,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:34,293 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:34,293 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:34,302 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,333 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 02:56:34,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:34,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:34,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:34,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:34,338 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:34,338 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:34,342 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,369 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 02:56:34,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:34,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:34,372 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:34,372 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:34,390 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:34,390 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:34,415 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:34,476 INFO L443 ModelExtractionUtils]: Simplification made 18 calls to the SMT solver. [2020-11-28 02:56:34,476 INFO L444 ModelExtractionUtils]: 20 out of 55 variables were initially zero. Simplification set additionally 32 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:34,479 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:34,481 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:34,481 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:34,481 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3) = -2*ULTIMATE.start_strcspn_~i~0 + 3*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_3 Supporting invariants [] [2020-11-28 02:56:34,630 INFO L297 tatePredicateManager]: 32 out of 35 supporting invariants were superfluous and have been removed [2020-11-28 02:56:34,636 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:56:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:34,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-28 02:56:34,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:34,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 02:56:34,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:34,849 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 02:56:34,850 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2020-11-28 02:56:34,850 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-11-28 02:56:34,905 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2020-11-28 02:56:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 02:56:34,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-28 02:56:34,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-28 02:56:34,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:34,906 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:56:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:34,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-28 02:56:34,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:35,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 02:56:35,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:35,090 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 02:56:35,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 3 loop predicates [2020-11-28 02:56:35,091 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-11-28 02:56:35,142 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 27 states and 30 transitions. Complement of second has 5 states. [2020-11-28 02:56:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 02:56:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-28 02:56:35,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-28 02:56:35,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:35,146 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:56:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:35,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-28 02:56:35,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:35,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 02:56:35,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:35,344 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 02:56:35,345 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 3 loop predicates [2020-11-28 02:56:35,345 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6 Second operand 7 states. [2020-11-28 02:56:35,517 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 6. Second operand 7 states. Result 56 states and 63 transitions. Complement of second has 11 states. [2020-11-28 02:56:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 4 stem states 2 non-accepting loop states 2 accepting loop states [2020-11-28 02:56:35,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 02:56:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2020-11-28 02:56:35,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 4 letters. [2020-11-28 02:56:35,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:35,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 20 letters. Loop has 4 letters. [2020-11-28 02:56:35,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:35,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 16 letters. Loop has 8 letters. [2020-11-28 02:56:35,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:35,521 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 63 transitions. [2020-11-28 02:56:35,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:35,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 42 states and 46 transitions. [2020-11-28 02:56:35,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 02:56:35,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 02:56:35,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2020-11-28 02:56:35,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:56:35,524 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-11-28 02:56:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2020-11-28 02:56:35,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2020-11-28 02:56:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 02:56:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-28 02:56:35,528 INFO L714 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-28 02:56:35,529 INFO L594 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-28 02:56:35,529 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 02:56:35,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 41 transitions. [2020-11-28 02:56:35,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:35,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:35,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:35,531 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-28 02:56:35,531 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:56:35,531 INFO L794 eck$LassoCheckResult]: Stem: 1039#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1033#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1034#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1044#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1050#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1053#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1064#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1061#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1063#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1062#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1060#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1059#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1058#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1048#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1049#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1042#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1043#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1037#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1038#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1046#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1047#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1065#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1054#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1055#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1056#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1040#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1041#L511-4 [2020-11-28 02:56:35,532 INFO L796 eck$LassoCheckResult]: Loop: 1041#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1035#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1036#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1045#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1041#L511-4 [2020-11-28 02:56:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:35,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1550213327, now seen corresponding path program 4 times [2020-11-28 02:56:35,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:35,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462823507] [2020-11-28 02:56:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:35,561 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:35,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:35,582 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 4 times [2020-11-28 02:56:35,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:35,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923243945] [2020-11-28 02:56:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:35,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:35,590 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:35,591 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:35,592 INFO L82 PathProgramCache]: Analyzing trace with hash 229061526, now seen corresponding path program 5 times [2020-11-28 02:56:35,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:35,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717418853] [2020-11-28 02:56:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:35,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:35,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:35,629 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:36,606 WARN L193 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 172 [2020-11-28 02:56:36,836 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-11-28 02:56:36,838 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:36,839 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:36,839 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:36,839 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:36,839 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:36,839 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:36,839 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:36,839 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:36,839 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration6_Lasso [2020-11-28 02:56:36,839 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:36,839 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:36,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:36,847 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 02:56:36,877 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 02:56:36,894 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 02:56:36,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:36,914 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 02:56:36,920 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 02:56:36,926 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 02:56:36,930 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 02:56:37,526 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 97 [2020-11-28 02:56:37,641 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 02:56:37,643 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 02:56:37,645 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 02:56:37,648 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 02:56:37,663 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 02:56:37,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:37,668 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 02:56:37,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:37,947 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-11-28 02:56:38,030 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2020-11-28 02:56:38,279 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-28 02:56:39,653 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2020-11-28 02:56:39,691 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:39,691 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:39,712 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 02:56:39,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:39,716 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:39,756 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 02:56:39,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:39,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,759 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:39,759 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,760 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,786 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:39,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:39,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:39,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:39,789 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:39,811 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,814 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:39,814 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:39,817 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:39,839 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:39,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,841 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:39,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:39,842 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,864 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 02:56:39,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:39,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,866 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:39,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:39,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,889 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 02:56:39,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:39,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:39,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:39,892 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,915 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:39,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,916 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 02:56:39,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,917 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 02:56:39,917 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 02:56:39,918 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,942 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 02:56:39,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,945 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:39,946 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:39,948 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:39,971 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:39,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:39,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:39,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:39,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:39,976 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:39,976 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:39,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:40,004 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 02:56:40,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:40,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:40,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:40,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:40,007 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:40,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:40,010 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:40,036 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 02:56:40,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:40,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:40,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:40,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:40,038 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:40,039 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:40,041 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:40,071 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 02:56:40,073 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:40,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:40,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:40,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:40,075 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:40,075 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:40,080 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:40,107 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 02:56:40,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:40,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:40,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:40,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:40,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:40,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:40,125 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:40,147 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 02:56:40,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:40,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:40,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:40,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:40,151 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:40,152 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:40,161 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:40,188 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 02:56:40,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:40,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:40,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:40,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:40,204 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:40,205 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:40,221 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:40,248 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2020-11-28 02:56:40,248 INFO L444 ModelExtractionUtils]: 20 out of 55 variables were initially zero. Simplification set additionally 32 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:40,250 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 02:56:40,252 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 02:56:40,253 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:40,253 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4) = -2*ULTIMATE.start_strcspn_~i~0 + 5*v_rep(select #length ULTIMATE.start_strcspn_~reject.base)_4 Supporting invariants [] [2020-11-28 02:56:40,391 INFO L297 tatePredicateManager]: 35 out of 36 supporting invariants were superfluous and have been removed [2020-11-28 02:56:40,393 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:56:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:40,587 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 02:56:40,587 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2020-11-28 02:56:40,587 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-11-28 02:56:40,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2020-11-28 02:56:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 02:56:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-28 02:56:40,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2020-11-28 02:56:40,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:40,673 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:56:40,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:40,843 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 02:56:40,844 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.5 stem predicates 3 loop predicates [2020-11-28 02:56:40,844 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-11-28 02:56:40,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 37 states and 41 transitions. Complement of second has 5 states. [2020-11-28 02:56:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 3 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 02:56:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-28 02:56:40,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 26 letters. Loop has 4 letters. [2020-11-28 02:56:40,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:40,894 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:56:40,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:40,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 02:56:40,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:41,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 02:56:41,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:41,061 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 02:56:41,061 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.5 stem predicates 3 loop predicates [2020-11-28 02:56:41,061 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8 Second operand 8 states. [2020-11-28 02:56:41,313 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 41 transitions. cyclomatic complexity: 8. Second operand 8 states. Result 66 states and 74 transitions. Complement of second has 13 states. [2020-11-28 02:56:41,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 5 stem states 2 non-accepting loop states 2 accepting loop states [2020-11-28 02:56:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 02:56:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2020-11-28 02:56:41,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 4 letters. [2020-11-28 02:56:41,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:41,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 30 letters. Loop has 4 letters. [2020-11-28 02:56:41,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:41,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 26 letters. Loop has 8 letters. [2020-11-28 02:56:41,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:41,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 74 transitions. [2020-11-28 02:56:41,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:41,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 52 states and 57 transitions. [2020-11-28 02:56:41,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 02:56:41,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 02:56:41,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 57 transitions. [2020-11-28 02:56:41,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 02:56:41,320 INFO L691 BuchiCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-28 02:56:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 57 transitions. [2020-11-28 02:56:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-11-28 02:56:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 02:56:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-11-28 02:56:41,324 INFO L714 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-11-28 02:56:41,324 INFO L594 BuchiCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-11-28 02:56:41,324 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 02:56:41,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 52 transitions. [2020-11-28 02:56:41,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 02:56:41,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 02:56:41,326 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 02:56:41,327 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-28 02:56:41,327 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 02:56:41,328 INFO L794 eck$LassoCheckResult]: Stem: 1711#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1705#L-1 havoc main_#res;havoc main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~ret13, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet9;havoc main_#t~nondet9; 1706#L519 assume !(main_~in_len~0 < 1);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet11;havoc main_#t~nondet11; 1716#L523 assume !(main_~out_len~0 < 1);call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcspn_#in~s.base, strcspn_#in~s.offset, strcspn_#in~reject.base, strcspn_#in~reject.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcspn_#res;havoc strcspn_#t~mem4, strcspn_#t~mem5, strcspn_#t~pre3, strcspn_#t~mem6, strcspn_#t~pre7, strcspn_#t~pre2.base, strcspn_#t~pre2.offset, strcspn_#t~mem8, strcspn_~s.base, strcspn_~s.offset, strcspn_~reject.base, strcspn_~reject.offset, strcspn_~l~0, strcspn_~i~0;strcspn_~s.base, strcspn_~s.offset := strcspn_#in~s.base, strcspn_#in~s.offset;strcspn_~reject.base, strcspn_~reject.offset := strcspn_#in~reject.base, strcspn_#in~reject.offset;strcspn_~l~0 := 0;havoc strcspn_~i~0; 1724#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1727#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1751#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1748#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1750#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1749#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1747#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1746#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1745#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1744#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1728#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1714#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1715#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1737#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1738#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1718#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1719#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1734#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1726#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1722#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1723#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1743#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1720#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1721#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1741#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1740#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1739#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1733#L511-1 assume !(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6; 1732#L511-5 strcspn_#t~pre7 := 1 + strcspn_~l~0;strcspn_~l~0 := 1 + strcspn_~l~0;havoc strcspn_#t~pre7; 1731#L510-3 strcspn_#t~pre2.base, strcspn_#t~pre2.offset := strcspn_~s.base, 1 + strcspn_~s.offset;strcspn_~s.base, strcspn_~s.offset := strcspn_~s.base, 1 + strcspn_~s.offset;havoc strcspn_#t~pre2.base, strcspn_#t~pre2.offset; 1729#L510-4 call strcspn_#t~mem8 := read~int(strcspn_~s.base, strcspn_~s.offset, 1); 1712#L510-1 assume !!(0 != strcspn_#t~mem8);havoc strcspn_#t~mem8;strcspn_~i~0 := 0; 1713#L511-4 [2020-11-28 02:56:41,328 INFO L796 eck$LassoCheckResult]: Loop: 1713#L511-4 call strcspn_#t~mem6 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1707#L511-1 assume !!(0 != strcspn_#t~mem6);havoc strcspn_#t~mem6;call strcspn_#t~mem4 := read~int(strcspn_~s.base, strcspn_~s.offset, 1);call strcspn_#t~mem5 := read~int(strcspn_~reject.base, strcspn_~reject.offset + strcspn_~i~0, 1); 1708#L512 assume !(strcspn_#t~mem4 == strcspn_#t~mem5);havoc strcspn_#t~mem5;havoc strcspn_#t~mem4; 1717#L511-3 strcspn_#t~pre3 := 1 + strcspn_~i~0;strcspn_~i~0 := 1 + strcspn_~i~0;havoc strcspn_#t~pre3; 1713#L511-4 [2020-11-28 02:56:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,329 INFO L82 PathProgramCache]: Analyzing trace with hash -43865248, now seen corresponding path program 6 times [2020-11-28 02:56:41,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681536343] [2020-11-28 02:56:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:41,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:41,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:41,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1698248, now seen corresponding path program 5 times [2020-11-28 02:56:41,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098445339] [2020-11-28 02:56:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:41,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:41,385 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:41,386 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:41,387 INFO L82 PathProgramCache]: Analyzing trace with hash -345387609, now seen corresponding path program 7 times [2020-11-28 02:56:41,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:41,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88355606] [2020-11-28 02:56:41,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:41,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:56:41,422 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:56:41,429 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:56:42,869 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 263 DAG size of output: 201 [2020-11-28 02:56:43,125 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-11-28 02:56:43,127 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 02:56:43,128 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 02:56:43,128 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 02:56:43,128 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 02:56:43,128 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 02:56:43,128 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:43,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 02:56:43,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 02:56:43,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: strcspn.i_Iteration7_Lasso [2020-11-28 02:56:43,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 02:56:43,128 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 02:56:43,131 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 02:56:43,824 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 101 [2020-11-28 02:56:43,946 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 02:56:43,948 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 02:56:43,965 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 02:56:43,967 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 02:56:43,970 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 02:56:43,972 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 02:56:43,974 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 02:56:43,977 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 02:56:43,980 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 02:56:43,982 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 02:56:43,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:43,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:43,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:43,992 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 02:56:43,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:43,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 02:56:44,283 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2020-11-28 02:56:52,976 WARN L193 SmtUtils]: Spent 8.57 s on a formula simplification. DAG size of input: 298 DAG size of output: 150 [2020-11-28 02:56:53,166 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 02:56:53,166 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:53,181 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 02:56:53,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,186 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,187 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,192 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,216 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 02:56:53,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,219 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,219 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,221 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,243 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 02:56:53,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:53,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:53,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:53,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 02:56:53,268 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:53,291 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 02:56:53,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:53,293 INFO L203 nArgumentSynthesizer]: 108 stem disjuncts [2020-11-28 02:56:53,293 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2020-11-28 02:56:53,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:53,856 INFO L401 nArgumentSynthesizer]: We have 904 Motzkin's Theorem applications. [2020-11-28 02:56:53,857 INFO L402 nArgumentSynthesizer]: A total of 8 supporting invariants were added. [2020-11-28 02:56:55,166 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:55,208 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 02:56:55,210 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:55,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:55,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:55,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:55,214 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:55,214 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:55,220 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:55,258 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 02:56:55,259 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:55,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:55,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:55,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:55,261 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:55,261 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:55,265 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:55,302 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 02:56:55,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 02:56:55,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 02:56:55,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 02:56:55,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 02:56:55,321 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 02:56:55,321 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:55,345 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 02:56:55,391 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2020-11-28 02:56:55,392 INFO L444 ModelExtractionUtils]: 23 out of 55 variables were initially zero. Simplification set additionally 28 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dbdfce1d-e96d-4333-b837-0eb648be4177/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 02:56:55,394 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 02:56:55,397 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-28 02:56:55,398 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 02:56:55,398 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_strcspn_~i~0, v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5) = -1*ULTIMATE.start_strcspn_~i~0 + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_5 Supporting invariants [1*ULTIMATE.start_strcspn_#in~s.offset >= 0] [2020-11-28 02:56:55,700 INFO L297 tatePredicateManager]: 43 out of 47 supporting invariants were superfluous and have been removed [2020-11-28 02:56:55,709 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 02:56:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:55,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-28 02:56:55,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:55,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:56:55,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:55,913 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 02:56:55,914 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-28 02:56:55,914 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-11-28 02:56:55,983 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 7 states. [2020-11-28 02:56:55,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 02:56:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-28 02:56:55,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2020-11-28 02:56:55,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:55,985 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:56:56,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:56,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-28 02:56:56,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:56,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:56:56,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:56,212 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 02:56:56,212 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-28 02:56:56,212 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-11-28 02:56:56,300 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 55 states and 61 transitions. Complement of second has 7 states. [2020-11-28 02:56:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 02:56:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-28 02:56:56,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 36 letters. Loop has 4 letters. [2020-11-28 02:56:56,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:56,302 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 02:56:56,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:56,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-28 02:56:56,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:56,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:56:56,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:56,467 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 02:56:56,467 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.4 stem predicates 2 loop predicates [2020-11-28 02:56:56,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10 Second operand 6 states. [2020-11-28 02:56:56,600 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 52 transitions. cyclomatic complexity: 10. Second operand 6 states. Result 80 states and 91 transitions. Complement of second has 9 states. [2020-11-28 02:56:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 4 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 02:56:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 02:56:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2020-11-28 02:56:56,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 36 letters. Loop has 4 letters. [2020-11-28 02:56:56,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:56,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 40 letters. Loop has 4 letters. [2020-11-28 02:56:56,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:56,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 32 transitions. Stem has 36 letters. Loop has 8 letters. [2020-11-28 02:56:56,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 02:56:56,604 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 91 transitions. [2020-11-28 02:56:56,607 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:56,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 0 states and 0 transitions. [2020-11-28 02:56:56,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 02:56:56,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 02:56:56,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 02:56:56,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 02:56:56,608 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:56,608 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:56,608 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:56:56,608 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-28 02:56:56,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:56:56,609 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 02:56:56,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 02:56:56,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:56:56 BoogieIcfgContainer [2020-11-28 02:56:56,614 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 02:56:56,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:56:56,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:56:56,615 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:56:56,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:22" (3/4) ... [2020-11-28 02:56:56,619 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 02:56:56,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:56:56,620 INFO L168 Benchmark]: Toolchain (without parser) took 34697.77 ms. Allocated memory was 83.9 MB in the beginning and 257.9 MB in the end (delta: 174.1 MB). Free memory was 46.9 MB in the beginning and 139.6 MB in the end (delta: -92.7 MB). Peak memory consumption was 82.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,621 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:56,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.47 ms. Allocated memory is still 83.9 MB. Free memory was 46.8 MB in the beginning and 50.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.25 ms. Allocated memory is still 83.9 MB. Free memory was 50.4 MB in the beginning and 48.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:56,622 INFO L168 Benchmark]: Boogie Preprocessor took 25.67 ms. Allocated memory is still 83.9 MB. Free memory was 48.6 MB in the beginning and 47.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,623 INFO L168 Benchmark]: RCFGBuilder took 473.90 ms. Allocated memory is still 83.9 MB. Free memory was 47.3 MB in the beginning and 32.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,623 INFO L168 Benchmark]: BuchiAutomizer took 33684.14 ms. Allocated memory was 83.9 MB in the beginning and 257.9 MB in the end (delta: 174.1 MB). Free memory was 31.8 MB in the beginning and 139.6 MB in the end (delta: -107.7 MB). Peak memory consumption was 69.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:56:56,623 INFO L168 Benchmark]: Witness Printer took 4.41 ms. Allocated memory is still 257.9 MB. Free memory is still 139.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:56:56,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory is still 63.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 460.47 ms. Allocated memory is still 83.9 MB. Free memory was 46.8 MB in the beginning and 50.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.25 ms. Allocated memory is still 83.9 MB. Free memory was 50.4 MB in the beginning and 48.6 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.67 ms. Allocated memory is still 83.9 MB. Free memory was 48.6 MB in the beginning and 47.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 473.90 ms. Allocated memory is still 83.9 MB. Free memory was 47.3 MB in the beginning and 32.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 33684.14 ms. Allocated memory was 83.9 MB in the beginning and 257.9 MB in the end (delta: 174.1 MB). Free memory was 31.8 MB in the beginning and 139.6 MB in the end (delta: -107.7 MB). Peak memory consumption was 69.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.41 ms. Allocated memory is still 257.9 MB. Free memory is still 139.6 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 - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - 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 7 terminating modules (2 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (in_len)] + -1 * s and consists of 4 locations. One deterministic module has affine ranking function -1 * i + unknown-#length-unknown[reject] + -1 * reject and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 3 * unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 8 locations. One nondeterministic module has affine ranking function -2 * i + 5 * unknown-#length-unknown[reject] and consists of 9 locations. One nondeterministic module has affine ranking function -1 * i + unknown-#length-unknown[__builtin_alloca (out_len)] and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 33.6s and 8 iterations. TraceHistogramMax:6. Analysis of lassos took 30.1s. Construction of modules took 0.3s. Büchi inclusion checks took 2.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 24 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 47 states and ocurred in iteration 6. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 134 SDtfs, 325 SDslu, 164 SDs, 0 SdLazy, 228 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital268 mio100 ax100 hnf99 lsp96 ukn77 mio100 lsp44 div100 bol100 ite100 ukn100 eq187 hnf87 smp97 dnf1547 smp67 tf100 neg89 sie127 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 1876ms VariablesStem: 6 VariablesLoop: 2 DisjunctsStem: 108 DisjunctsLoop: 4 SupportingInvariants: 8 MotzkinApplications: 904 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...