./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/string-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/string-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e655d34f6b59f7cc9a55d4dc4dc525a41685abad 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 03:27:38,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:27:38,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:27:38,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:27:38,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:27:38,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:27:38,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:27:38,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:27:38,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:27:38,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:27:38,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:27:38,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:27:38,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:27:38,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:27:38,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:27:38,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:27:38,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:27:38,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:27:38,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:27:38,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:27:38,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:27:38,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:27:38,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:27:38,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:27:38,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:27:38,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:27:38,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:27:38,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:27:38,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:27:38,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:27:38,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:27:38,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:27:38,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:27:38,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:27:38,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:27:38,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:27:38,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:27:38,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:27:38,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:27:38,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:27:38,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:27:38,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-20 03:27:38,759 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:27:38,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:27:38,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:27:38,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:27:38,761 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:27:38,761 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 03:27:38,762 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 03:27:38,762 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 03:27:38,762 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 03:27:38,762 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 03:27:38,762 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 03:27:38,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:27:38,763 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:27:38,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 03:27:38,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:27:38,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:27:38,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:27:38,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 03:27:38,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 03:27:38,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 03:27:38,764 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:27:38,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 03:27:38,765 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 03:27:38,765 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:27:38,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 03:27:38,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:27:38,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:27:38,766 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 03:27:38,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:27:38,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 03:27:38,767 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 03:27:38,767 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 03:27:38,768 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e655d34f6b59f7cc9a55d4dc4dc525a41685abad [2019-11-20 03:27:38,899 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:27:38,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:27:38,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:27:38,914 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:27:38,914 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:27:38,915 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/../../sv-benchmarks/c/loops/string-1.i [2019-11-20 03:27:38,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/data/25b6c315c/28e0bbf46800407588a4f800ec0eb102/FLAGddfc545c7 [2019-11-20 03:27:39,361 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:27:39,362 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/sv-benchmarks/c/loops/string-1.i [2019-11-20 03:27:39,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/data/25b6c315c/28e0bbf46800407588a4f800ec0eb102/FLAGddfc545c7 [2019-11-20 03:27:39,384 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/data/25b6c315c/28e0bbf46800407588a4f800ec0eb102 [2019-11-20 03:27:39,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:27:39,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 03:27:39,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:27:39,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:27:39,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:27:39,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb43993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39, skipping insertion in model container [2019-11-20 03:27:39,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,407 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:27:39,426 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:27:39,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:27:39,639 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:27:39,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:27:39,680 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:27:39,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39 WrapperNode [2019-11-20 03:27:39,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:27:39,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 03:27:39,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 03:27:39,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 03:27:39,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 03:27:39,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:27:39,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:27:39,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:27:39,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... [2019-11-20 03:27:39,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:27:39,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:27:39,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:27:39,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:27:39,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:39,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 03:27:39,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:27:39,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:27:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 03:27:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 03:27:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 03:27:40,127 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:27:40,128 INFO L285 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-20 03:27:40,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:27:40 BoogieIcfgContainer [2019-11-20 03:27:40,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:27:40,129 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 03:27:40,129 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 03:27:40,132 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 03:27:40,133 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:27:40,133 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 03:27:39" (1/3) ... [2019-11-20 03:27:40,134 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e65fb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:27:40, skipping insertion in model container [2019-11-20 03:27:40,134 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:27:40,134 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:27:39" (2/3) ... [2019-11-20 03:27:40,135 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e65fb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 03:27:40, skipping insertion in model container [2019-11-20 03:27:40,135 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 03:27:40,135 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:27:40" (3/3) ... [2019-11-20 03:27:40,137 INFO L371 chiAutomizerObserver]: Analyzing ICFG string-1.i [2019-11-20 03:27:40,176 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 03:27:40,176 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 03:27:40,176 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 03:27:40,177 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:27:40,177 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:27:40,177 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 03:27:40,177 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:27:40,177 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 03:27:40,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-11-20 03:27:40,222 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2019-11-20 03:27:40,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:40,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:40,229 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 03:27:40,229 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:40,229 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 03:27:40,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2019-11-20 03:27:40,237 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 10 [2019-11-20 03:27:40,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:40,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:40,238 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 03:27:40,238 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:40,244 INFO L794 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4#L-1true havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 14#L19-3true [2019-11-20 03:27:40,244 INFO L796 eck$LassoCheckResult]: Loop: 14#L19-3true assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 17#L19-2true main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 14#L19-3true [2019-11-20 03:27:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-11-20 03:27:40,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:40,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984428000] [2019-11-20 03:27:40,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:40,362 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2019-11-20 03:27:40,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:40,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110961735] [2019-11-20 03:27:40,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:40,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:40,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:40,383 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2019-11-20 03:27:40,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:40,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75068034] [2019-11-20 03:27:40,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:40,453 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:40,698 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-11-20 03:27:40,763 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:27:40,764 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:27:40,764 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:27:40,764 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:27:40,764 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:27:40,765 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:40,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:27:40,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:27:40,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration1_Lasso [2019-11-20 03:27:40,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:27:40,766 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:27:40,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:40,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:41,207 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:27:41,212 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,233 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 [2019-11-20 03:27:41,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,236 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:41,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:41,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:41,244 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,265 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 [2019-11-20 03:27:41,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:41,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:41,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:41,273 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,291 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 [2019-11-20 03:27:41,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:41,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,295 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:41,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:41,298 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,312 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 [2019-11-20 03:27:41,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:41,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,315 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,315 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:41,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:41,319 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,337 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 [2019-11-20 03:27:41,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:41,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:41,340 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 [2019-11-20 03:27:41,342 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,357 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 [2019-11-20 03:27:41,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,364 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:41,364 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:41,368 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,385 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:41,388 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:41,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:41,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:41,391 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:41,404 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:27:41,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,410 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:41,410 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:41,415 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:41,425 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 [2019-11-20 03:27:41,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:41,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:41,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:41,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:41,441 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:41,441 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:41,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:27:41,615 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2019-11-20 03:27:41,616 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 10 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:41,626 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:27:41,628 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:27:41,628 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:27:41,629 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_1, ULTIMATE.start_main_~i~0) = 9*v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_1 - 2*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 03:27:41,647 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-20 03:27:41,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 03:27:41,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:41,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:27:41,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:41,711 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 03:27:41,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:27:41,749 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 [2019-11-20 03:27:41,750 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 3 states. [2019-11-20 03:27:41,811 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states.. Second operand 3 states. Result 50 states and 80 transitions. Complement of second has 8 states. [2019-11-20 03:27:41,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 03:27:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:27:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2019-11-20 03:27:41,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 03:27:41,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:41,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 03:27:41,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:41,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 40 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-20 03:27:41,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:41,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 80 transitions. [2019-11-20 03:27:41,822 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:41,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 19 states and 28 transitions. [2019-11-20 03:27:41,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-20 03:27:41,828 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-20 03:27:41,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 28 transitions. [2019-11-20 03:27:41,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:27:41,829 INFO L688 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2019-11-20 03:27:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 28 transitions. [2019-11-20 03:27:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-20 03:27:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 03:27:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2019-11-20 03:27:41,856 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2019-11-20 03:27:41,856 INFO L591 BuchiCegarLoop]: Abstraction has 19 states and 28 transitions. [2019-11-20 03:27:41,857 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 03:27:41,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 28 transitions. [2019-11-20 03:27:41,858 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:41,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:41,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:41,858 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 03:27:41,858 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:41,859 INFO L794 eck$LassoCheckResult]: Stem: 145#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 144#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 129#L19-3 assume !(main_~i~0 < 5); 127#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 128#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 142#L23-3 [2019-11-20 03:27:41,859 INFO L796 eck$LassoCheckResult]: Loop: 142#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 143#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 142#L23-3 [2019-11-20 03:27:41,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:41,859 INFO L82 PathProgramCache]: Analyzing trace with hash 28696938, now seen corresponding path program 1 times [2019-11-20 03:27:41,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:41,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127089908] [2019-11-20 03:27:41,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:27:41,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127089908] [2019-11-20 03:27:41,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:27:41,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 03:27:41,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298825441] [2019-11-20 03:27:41,906 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:27:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:41,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1891, now seen corresponding path program 1 times [2019-11-20 03:27:41,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:41,907 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175774143] [2019-11-20 03:27:41,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:41,918 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:41,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:41,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 03:27:41,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:27:41,965 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. cyclomatic complexity: 14 Second operand 3 states. [2019-11-20 03:27:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:42,006 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-20 03:27:42,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 03:27:42,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 30 transitions. [2019-11-20 03:27:42,009 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 30 transitions. [2019-11-20 03:27:42,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2019-11-20 03:27:42,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-20 03:27:42,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2019-11-20 03:27:42,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:27:42,011 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-20 03:27:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2019-11-20 03:27:42,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-11-20 03:27:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-20 03:27:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-11-20 03:27:42,014 INFO L711 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-20 03:27:42,014 INFO L591 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-11-20 03:27:42,015 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 03:27:42,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2019-11-20 03:27:42,022 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:42,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:42,025 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:42,025 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:42,025 INFO L794 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 193#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 178#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 179#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 180#L19-3 assume !(main_~i~0 < 5); 176#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 177#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 191#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 192#L23-2 [2019-11-20 03:27:42,025 INFO L796 eck$LassoCheckResult]: Loop: 192#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 194#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 192#L23-2 [2019-11-20 03:27:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:42,026 INFO L82 PathProgramCache]: Analyzing trace with hash 265181045, now seen corresponding path program 1 times [2019-11-20 03:27:42,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:42,026 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099090527] [2019-11-20 03:27:42,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:27:42,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099090527] [2019-11-20 03:27:42,080 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894966769] [2019-11-20 03:27:42,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:27:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:42,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 03:27:42,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:27:42,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:27:42,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-20 03:27:42,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798478035] [2019-11-20 03:27:42,163 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:27:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:42,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 2 times [2019-11-20 03:27:42,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:42,164 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668519437] [2019-11-20 03:27:42,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:42,181 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:42,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:42,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 03:27:42,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 03:27:42,221 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. cyclomatic complexity: 10 Second operand 5 states. [2019-11-20 03:27:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:42,293 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2019-11-20 03:27:42,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 03:27:42,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 37 transitions. [2019-11-20 03:27:42,295 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 37 transitions. [2019-11-20 03:27:42,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-11-20 03:27:42,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-11-20 03:27:42,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 37 transitions. [2019-11-20 03:27:42,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:27:42,297 INFO L688 BuchiCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-11-20 03:27:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 37 transitions. [2019-11-20 03:27:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2019-11-20 03:27:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 03:27:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-11-20 03:27:42,300 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-20 03:27:42,300 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-20 03:27:42,300 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 03:27:42,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 29 transitions. [2019-11-20 03:27:42,301 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:42,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:42,302 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:42,302 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:42,302 INFO L794 eck$LassoCheckResult]: Stem: 276#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 273#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 257#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 258#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 259#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 260#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 277#L19-3 assume !(main_~i~0 < 5); 255#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 256#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 274#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 275#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 271#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 272#L23-2 [2019-11-20 03:27:42,302 INFO L796 eck$LassoCheckResult]: Loop: 272#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 278#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 272#L23-2 [2019-11-20 03:27:42,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:42,303 INFO L82 PathProgramCache]: Analyzing trace with hash 780717205, now seen corresponding path program 1 times [2019-11-20 03:27:42,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:42,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754437366] [2019-11-20 03:27:42,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 03:27:42,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754437366] [2019-11-20 03:27:42,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575345670] [2019-11-20 03:27:42,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:27:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:42,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:27:42,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 03:27:42,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:27:42,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-20 03:27:42,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136894689] [2019-11-20 03:27:42,458 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:27:42,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:42,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 3 times [2019-11-20 03:27:42,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:42,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232108905] [2019-11-20 03:27:42,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:42,468 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:42,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:42,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 03:27:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 03:27:42,537 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. cyclomatic complexity: 10 Second operand 6 states. [2019-11-20 03:27:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:42,633 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-11-20 03:27:42,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 03:27:42,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 44 transitions. [2019-11-20 03:27:42,635 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 44 transitions. [2019-11-20 03:27:42,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-11-20 03:27:42,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-11-20 03:27:42,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2019-11-20 03:27:42,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:27:42,637 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-11-20 03:27:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2019-11-20 03:27:42,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2019-11-20 03:27:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-20 03:27:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-20 03:27:42,640 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-20 03:27:42,640 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-20 03:27:42,640 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 03:27:42,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 33 transitions. [2019-11-20 03:27:42,641 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,641 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:42,641 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:42,642 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2019-11-20 03:27:42,642 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:42,642 INFO L794 eck$LassoCheckResult]: Stem: 380#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 376#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 359#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 360#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 384#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 366#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 361#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 362#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 381#L19-3 assume !(main_~i~0 < 5); 357#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 358#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 377#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 378#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 379#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 383#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 374#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 375#L23-2 [2019-11-20 03:27:42,642 INFO L796 eck$LassoCheckResult]: Loop: 375#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 382#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 375#L23-2 [2019-11-20 03:27:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:42,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2111137973, now seen corresponding path program 2 times [2019-11-20 03:27:42,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:42,643 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185349596] [2019-11-20 03:27:42,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 03:27:42,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185349596] [2019-11-20 03:27:42,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693279123] [2019-11-20 03:27:42,731 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:27:42,778 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 03:27:42,779 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:27:42,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 03:27:42,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 03:27:42,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:27:42,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-20 03:27:42,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233463010] [2019-11-20 03:27:42,796 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:27:42,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:42,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 4 times [2019-11-20 03:27:42,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:42,797 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904638945] [2019-11-20 03:27:42,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:42,804 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:42,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:42,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 03:27:42,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 03:27:42,848 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. cyclomatic complexity: 10 Second operand 7 states. [2019-11-20 03:27:42,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:42,940 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-11-20 03:27:42,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 03:27:42,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 51 transitions. [2019-11-20 03:27:42,941 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 42 states and 51 transitions. [2019-11-20 03:27:42,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-20 03:27:42,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-20 03:27:42,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 51 transitions. [2019-11-20 03:27:42,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:27:42,943 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 51 transitions. [2019-11-20 03:27:42,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 51 transitions. [2019-11-20 03:27:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2019-11-20 03:27:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-20 03:27:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-20 03:27:42,946 INFO L711 BuchiCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-20 03:27:42,946 INFO L591 BuchiCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-20 03:27:42,946 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 03:27:42,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 37 transitions. [2019-11-20 03:27:42,947 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:42,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:42,947 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:42,948 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 3, 1, 1, 1, 1, 1] [2019-11-20 03:27:42,948 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:42,948 INFO L794 eck$LassoCheckResult]: Stem: 504#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 501#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 484#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 485#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 486#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 487#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 491#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 510#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 509#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 506#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 505#L19-3 assume !(main_~i~0 < 5); 482#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 483#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 502#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 503#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 499#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 500#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 513#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 512#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 511#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 508#L23-2 [2019-11-20 03:27:42,948 INFO L796 eck$LassoCheckResult]: Loop: 508#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 507#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 508#L23-2 [2019-11-20 03:27:42,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:42,949 INFO L82 PathProgramCache]: Analyzing trace with hash 213314517, now seen corresponding path program 3 times [2019-11-20 03:27:42,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:42,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827262253] [2019-11-20 03:27:42,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 03:27:43,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827262253] [2019-11-20 03:27:43,013 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943373749] [2019-11-20 03:27:43,013 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:27:43,077 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-20 03:27:43,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:27:43,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 03:27:43,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 03:27:43,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:27:43,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-20 03:27:43,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133960165] [2019-11-20 03:27:43,092 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:27:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 5 times [2019-11-20 03:27:43,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:43,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180068853] [2019-11-20 03:27:43,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,110 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:43,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:43,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 03:27:43,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 03:27:43,169 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. cyclomatic complexity: 10 Second operand 8 states. [2019-11-20 03:27:43,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:43,284 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-11-20 03:27:43,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 03:27:43,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 56 transitions. [2019-11-20 03:27:43,285 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:43,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 46 states and 56 transitions. [2019-11-20 03:27:43,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2019-11-20 03:27:43,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2019-11-20 03:27:43,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 56 transitions. [2019-11-20 03:27:43,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:27:43,287 INFO L688 BuchiCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-11-20 03:27:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 56 transitions. [2019-11-20 03:27:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2019-11-20 03:27:43,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 03:27:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-11-20 03:27:43,290 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-20 03:27:43,290 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-11-20 03:27:43,290 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 03:27:43,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 41 transitions. [2019-11-20 03:27:43,290 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 8 [2019-11-20 03:27:43,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:43,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:43,291 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 1, 1, 1, 1, 1] [2019-11-20 03:27:43,291 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:43,292 INFO L794 eck$LassoCheckResult]: Stem: 648#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 646#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 630#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 631#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 632#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 633#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 655#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 654#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 653#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 652#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 651#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 650#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 649#L19-3 assume !(main_~i~0 < 5); 628#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 629#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 644#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 645#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 647#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 663#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 662#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 661#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 660#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 659#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 658#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 657#L23-2 [2019-11-20 03:27:43,292 INFO L796 eck$LassoCheckResult]: Loop: 657#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 656#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 657#L23-2 [2019-11-20 03:27:43,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:43,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1212159477, now seen corresponding path program 4 times [2019-11-20 03:27:43,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:43,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613843314] [2019-11-20 03:27:43,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,343 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1951, now seen corresponding path program 6 times [2019-11-20 03:27:43,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:43,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16401986] [2019-11-20 03:27:43,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,349 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:43,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash 949121171, now seen corresponding path program 5 times [2019-11-20 03:27:43,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:43,350 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554372293] [2019-11-20 03:27:43,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-20 03:27:43,506 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554372293] [2019-11-20 03:27:43,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:27:43,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-20 03:27:43,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831868076] [2019-11-20 03:27:43,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:43,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 03:27:43,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 03:27:43,534 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. cyclomatic complexity: 10 Second operand 9 states. [2019-11-20 03:27:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:43,626 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-11-20 03:27:43,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 03:27:43,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 41 transitions. [2019-11-20 03:27:43,627 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2019-11-20 03:27:43,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 37 states and 41 transitions. [2019-11-20 03:27:43,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-20 03:27:43,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-20 03:27:43,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 41 transitions. [2019-11-20 03:27:43,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:27:43,628 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-11-20 03:27:43,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 41 transitions. [2019-11-20 03:27:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-20 03:27:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-20 03:27:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-11-20 03:27:43,630 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-20 03:27:43,631 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-11-20 03:27:43,631 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 03:27:43,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 40 transitions. [2019-11-20 03:27:43,631 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2019-11-20 03:27:43,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:43,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:43,632 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:43,632 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:43,633 INFO L794 eck$LassoCheckResult]: Stem: 735#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 733#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 717#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 718#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 719#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 720#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 750#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 749#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 748#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 747#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 746#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 737#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 736#L19-3 assume !(main_~i~0 < 5); 715#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 716#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 731#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 732#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 734#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 745#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 744#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 743#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 742#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 741#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 740#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 739#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 738#L23-3 assume !(main_~i~0 < 5); 729#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 730#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 723#L28-3 [2019-11-20 03:27:43,633 INFO L796 eck$LassoCheckResult]: Loop: 723#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 721#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 723#L28-3 [2019-11-20 03:27:43,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:43,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1572377782, now seen corresponding path program 1 times [2019-11-20 03:27:43,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:43,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044709718] [2019-11-20 03:27:43,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,678 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:43,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:43,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2406, now seen corresponding path program 1 times [2019-11-20 03:27:43,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:43,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689459847] [2019-11-20 03:27:43,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,684 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:43,685 INFO L82 PathProgramCache]: Analyzing trace with hash -773438245, now seen corresponding path program 1 times [2019-11-20 03:27:43,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:43,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634661847] [2019-11-20 03:27:43,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:43,720 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:46,917 WARN L191 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 217 DAG size of output: 161 [2019-11-20 03:27:47,095 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-11-20 03:27:47,097 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:27:47,098 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:27:47,098 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:27:47,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:27:47,098 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:27:47,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:27:47,098 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:27:47,098 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration8_Lasso [2019-11-20 03:27:47,098 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:27:47,098 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:27:47,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:47,515 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:27:47,515 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,519 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 [2019-11-20 03:27:47,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:47,523 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:27:47,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:47,552 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,568 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 [2019-11-20 03:27:47,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,571 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,572 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:47,592 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 [2019-11-20 03:27:47,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,594 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,594 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,594 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,594 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,595 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,595 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:47,599 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,616 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 [2019-11-20 03:27:47,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,624 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,624 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:47,627 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:47,644 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 [2019-11-20 03:27:47,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:47,649 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,663 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 [2019-11-20 03:27:47,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,664 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,665 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:47,667 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,685 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 [2019-11-20 03:27:47,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,689 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,700 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 [2019-11-20 03:27:47,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,702 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,703 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,703 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,703 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,705 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,719 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 [2019-11-20 03:27:47,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,721 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,721 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,721 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,723 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,740 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 [2019-11-20 03:27:47,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,745 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,751 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 [2019-11-20 03:27:47,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,754 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 [2019-11-20 03:27:47,755 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,761 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 [2019-11-20 03:27:47,763 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,763 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,763 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,764 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,764 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,767 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,773 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 [2019-11-20 03:27:47,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,783 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,789 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 [2019-11-20 03:27:47,791 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,794 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,794 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,800 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:47,804 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 [2019-11-20 03:27:47,805 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,806 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,806 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,806 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,808 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,808 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:47,811 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,817 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 [2019-11-20 03:27:47,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,828 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,828 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,836 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,843 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 [2019-11-20 03:27:47,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,847 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,852 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,860 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 [2019-11-20 03:27:47,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,865 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,865 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,870 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,875 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 [2019-11-20 03:27:47,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:47,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:47,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,879 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,885 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:27:47,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,888 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,888 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,902 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 [2019-11-20 03:27:47,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:47,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:47,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:47,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:47,908 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:47,908 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:27:47,940 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2019-11-20 03:27:47,940 INFO L444 ModelExtractionUtils]: 0 out of 13 variables were initially zero. Simplification set additionally 9 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:47,944 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:47,947 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:27:47,947 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:27:47,947 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_2, ULTIMATE.start_main_~#string_A~0.offset, ULTIMATE.start_main_~nc_A~0) = 1*v_rep(select #length ULTIMATE.start_main_~#string_A~0.base)_2 - 1*ULTIMATE.start_main_~#string_A~0.offset - 1*ULTIMATE.start_main_~nc_A~0 Supporting invariants [] [2019-11-20 03:27:47,964 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-11-20 03:27:47,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 03:27:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:48,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:27:48,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:48,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:27:48,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:27:48,040 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 [2019-11-20 03:27:48,040 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 40 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 03:27:48,063 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 40 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 44 states and 52 transitions. Complement of second has 4 states. [2019-11-20 03:27:48,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:27:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:27:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2019-11-20 03:27:48,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 28 letters. Loop has 2 letters. [2019-11-20 03:27:48,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:48,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 30 letters. Loop has 2 letters. [2019-11-20 03:27:48,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:48,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 28 letters. Loop has 4 letters. [2019-11-20 03:27:48,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:48,067 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 52 transitions. [2019-11-20 03:27:48,067 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 03:27:48,068 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 38 states and 43 transitions. [2019-11-20 03:27:48,068 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-11-20 03:27:48,068 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-20 03:27:48,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 43 transitions. [2019-11-20 03:27:48,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:27:48,068 INFO L688 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-11-20 03:27:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 43 transitions. [2019-11-20 03:27:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-20 03:27:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-20 03:27:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-11-20 03:27:48,071 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-11-20 03:27:48,071 INFO L591 BuchiCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-11-20 03:27:48,071 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 03:27:48,071 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 43 transitions. [2019-11-20 03:27:48,072 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 03:27:48,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:48,072 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:48,073 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:48,073 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:48,073 INFO L794 eck$LassoCheckResult]: Stem: 943#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 940#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 923#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 924#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 925#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 926#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 951#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 950#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 949#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 948#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 947#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 946#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 945#L19-3 assume !(main_~i~0 < 5); 921#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 922#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 941#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 942#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 938#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 939#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 958#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 957#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 956#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 955#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 954#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 953#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 952#L23-3 assume !(main_~i~0 < 5); 936#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 937#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 944#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 927#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 928#L28-4 main_~nc_B~0 := 0; 934#L32-3 [2019-11-20 03:27:48,073 INFO L796 eck$LassoCheckResult]: Loop: 934#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 935#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 934#L32-3 [2019-11-20 03:27:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:48,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1793218173, now seen corresponding path program 1 times [2019-11-20 03:27:48,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:48,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510672621] [2019-11-20 03:27:48,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:48,102 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:48,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2854, now seen corresponding path program 1 times [2019-11-20 03:27:48,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:48,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397722199] [2019-11-20 03:27:48,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:48,107 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:48,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1000780450, now seen corresponding path program 1 times [2019-11-20 03:27:48,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:48,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946207935] [2019-11-20 03:27:48,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:48,144 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:50,891 WARN L191 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 228 DAG size of output: 171 [2019-11-20 03:27:51,009 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-11-20 03:27:51,011 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:27:51,011 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:27:51,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:27:51,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:27:51,012 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:27:51,012 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:51,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:27:51,012 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:27:51,012 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration9_Lasso [2019-11-20 03:27:51,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:27:51,012 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:27:51,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,023 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:51,375 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:27:51,375 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:51,385 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 [2019-11-20 03:27:51,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:51,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:51,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:51,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:51,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:51,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:51,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:51,388 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:51,392 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 [2019-11-20 03:27:51,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:51,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:51,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:51,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:51,395 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:51,395 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:51,397 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:51,401 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 [2019-11-20 03:27:51,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:51,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:51,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:51,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:51,404 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:51,404 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:51,412 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:51,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:27:51,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:51,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:51,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:51,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:51,426 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:51,426 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:51,434 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:27:51,461 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2019-11-20 03:27:51,461 INFO L444 ModelExtractionUtils]: 12 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_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:51,464 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:27:51,466 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:27:51,466 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:27:51,466 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~#string_B~0.offset, v_rep(select #length ULTIMATE.start_main_~#string_B~0.base)_3, ULTIMATE.start_main_~nc_B~0) = -1*ULTIMATE.start_main_~#string_B~0.offset + 1*v_rep(select #length ULTIMATE.start_main_~#string_B~0.base)_3 - 1*ULTIMATE.start_main_~nc_B~0 Supporting invariants [] [2019-11-20 03:27:51,476 INFO L297 tatePredicateManager]: 4 out of 4 supporting invariants were superfluous and have been removed [2019-11-20 03:27:51,477 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-20 03:27:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:51,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:27:51,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:51,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:27:51,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:27:51,528 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 [2019-11-20 03:27:51,528 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 43 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-20 03:27:51,543 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 43 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 43 states and 51 transitions. Complement of second has 4 states. [2019-11-20 03:27:51,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:27:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:27:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2019-11-20 03:27:51,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 31 letters. Loop has 2 letters. [2019-11-20 03:27:51,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:51,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 33 letters. Loop has 2 letters. [2019-11-20 03:27:51,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:51,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 23 transitions. Stem has 31 letters. Loop has 4 letters. [2019-11-20 03:27:51,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:51,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 51 transitions. [2019-11-20 03:27:51,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:51,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 40 states and 46 transitions. [2019-11-20 03:27:51,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2019-11-20 03:27:51,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-20 03:27:51,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 46 transitions. [2019-11-20 03:27:51,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:27:51,547 INFO L688 BuchiCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-11-20 03:27:51,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 46 transitions. [2019-11-20 03:27:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-20 03:27:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 03:27:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-11-20 03:27:51,550 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-11-20 03:27:51,550 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-11-20 03:27:51,550 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-20 03:27:51,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 46 transitions. [2019-11-20 03:27:51,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:51,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:51,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:51,551 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:51,552 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:51,552 INFO L794 eck$LassoCheckResult]: Stem: 1161#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1158#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1139#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1140#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1141#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1142#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1169#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1168#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1167#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1166#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1165#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1164#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1163#L19-3 assume !(main_~i~0 < 5); 1137#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1138#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1159#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1160#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1156#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1157#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1176#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1175#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1174#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1173#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1172#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1171#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1170#L23-3 assume !(main_~i~0 < 5); 1154#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1155#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1162#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1143#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1144#L28-4 main_~nc_B~0 := 0; 1150#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1152#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1147#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1148#L41-2 [2019-11-20 03:27:51,552 INFO L796 eck$LassoCheckResult]: Loop: 1148#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1149#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1148#L41-2 [2019-11-20 03:27:51,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:51,552 INFO L82 PathProgramCache]: Analyzing trace with hash 959422888, now seen corresponding path program 1 times [2019-11-20 03:27:51,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:51,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420390713] [2019-11-20 03:27:51,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:51,585 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:51,585 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 1 times [2019-11-20 03:27:51,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:51,586 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724395415] [2019-11-20 03:27:51,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:51,591 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:51,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1412570677, now seen corresponding path program 1 times [2019-11-20 03:27:51,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:51,592 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902409050] [2019-11-20 03:27:51,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-20 03:27:51,643 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902409050] [2019-11-20 03:27:51,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:27:51,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 03:27:51,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930327864] [2019-11-20 03:27:51,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:51,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 03:27:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 03:27:51,727 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-11-20 03:27:51,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:51,741 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2019-11-20 03:27:51,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 03:27:51,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 56 transitions. [2019-11-20 03:27:51,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:51,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 41 states and 46 transitions. [2019-11-20 03:27:51,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-20 03:27:51,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-20 03:27:51,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 46 transitions. [2019-11-20 03:27:51,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:27:51,743 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-11-20 03:27:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 46 transitions. [2019-11-20 03:27:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-11-20 03:27:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 03:27:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2019-11-20 03:27:51,745 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 45 transitions. [2019-11-20 03:27:51,746 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 45 transitions. [2019-11-20 03:27:51,746 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-20 03:27:51,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 45 transitions. [2019-11-20 03:27:51,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:51,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:51,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:51,747 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:51,747 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:51,748 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1257#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1237#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1238#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1239#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1240#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1245#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1266#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1265#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1264#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1263#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1262#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1261#L19-3 assume !(main_~i~0 < 5); 1235#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1236#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1255#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1256#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1258#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1274#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1273#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1272#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1271#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1270#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1269#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1268#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1267#L23-3 assume !(main_~i~0 < 5); 1253#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1254#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1260#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1243#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1244#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1241#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1242#L28-4 main_~nc_B~0 := 0; 1249#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1250#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1246#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1247#L41-2 [2019-11-20 03:27:51,748 INFO L796 eck$LassoCheckResult]: Loop: 1247#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1248#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1247#L41-2 [2019-11-20 03:27:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash 94364173, now seen corresponding path program 1 times [2019-11-20 03:27:51,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:51,748 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520582948] [2019-11-20 03:27:51,748 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-20 03:27:51,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520582948] [2019-11-20 03:27:51,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067379823] [2019-11-20 03:27:51,803 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:27:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:51,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:27:51,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-20 03:27:51,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 03:27:51,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2019-11-20 03:27:51,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157984492] [2019-11-20 03:27:51,873 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:27:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 2 times [2019-11-20 03:27:51,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:51,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541108461] [2019-11-20 03:27:51,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:51,879 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:51,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:51,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 03:27:51,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 03:27:51,950 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-11-20 03:27:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:51,974 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2019-11-20 03:27:51,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 03:27:51,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 48 transitions. [2019-11-20 03:27:51,974 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:51,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 46 transitions. [2019-11-20 03:27:51,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-20 03:27:51,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2019-11-20 03:27:51,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 46 transitions. [2019-11-20 03:27:51,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:27:51,976 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-11-20 03:27:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 46 transitions. [2019-11-20 03:27:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-11-20 03:27:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 03:27:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-11-20 03:27:51,978 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-11-20 03:27:51,978 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-11-20 03:27:51,978 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-20 03:27:51,978 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 44 transitions. [2019-11-20 03:27:51,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:51,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:51,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:51,979 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:51,979 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:51,980 INFO L794 eck$LassoCheckResult]: Stem: 1459#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1457#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1438#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1439#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1440#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1441#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1467#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1466#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1465#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1464#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1463#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1462#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1461#L19-3 assume !(main_~i~0 < 5); 1436#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1437#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1455#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1456#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1458#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1475#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1474#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1473#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1472#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1471#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1470#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1469#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1468#L23-3 assume !(main_~i~0 < 5); 1453#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1454#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1460#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1444#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1445#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1442#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1443#L28-4 main_~nc_B~0 := 0; 1449#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1450#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 1451#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1452#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1446#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1447#L41-2 [2019-11-20 03:27:51,980 INFO L796 eck$LassoCheckResult]: Loop: 1447#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1448#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1447#L41-2 [2019-11-20 03:27:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:51,980 INFO L82 PathProgramCache]: Analyzing trace with hash 489706120, now seen corresponding path program 1 times [2019-11-20 03:27:51,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:51,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423305683] [2019-11-20 03:27:51,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:52,015 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:52,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:52,015 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 3 times [2019-11-20 03:27:52,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:52,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59474460] [2019-11-20 03:27:52,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:52,020 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:52,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:52,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1838818645, now seen corresponding path program 1 times [2019-11-20 03:27:52,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:52,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956774671] [2019-11-20 03:27:52,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:52,055 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:55,915 WARN L191 SmtUtils]: Spent 3.79 s on a formula simplification. DAG size of input: 265 DAG size of output: 199 [2019-11-20 03:27:56,136 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-11-20 03:27:56,139 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:27:56,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:27:56,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:27:56,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:27:56,139 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:27:56,139 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:56,139 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:27:56,139 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:27:56,139 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration12_Lasso [2019-11-20 03:27:56,139 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:27:56,140 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:27:56,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:27:56,469 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-11-20 03:27:56,846 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:27:56,846 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:56,852 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 [2019-11-20 03:27:56,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,853 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,854 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,855 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:56,872 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 [2019-11-20 03:27:56,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,875 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 [2019-11-20 03:27:56,876 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,881 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 [2019-11-20 03:27:56,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,884 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:56,888 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 [2019-11-20 03:27:56,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,891 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:56,895 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 [2019-11-20 03:27:56,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,897 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,897 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,898 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,904 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 [2019-11-20 03:27:56,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,906 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:56,906 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:56,909 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,913 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 [2019-11-20 03:27:56,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,915 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:56,916 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:56,918 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,922 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 [2019-11-20 03:27:56,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,923 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,934 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 [2019-11-20 03:27:56,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,937 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,943 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 [2019-11-20 03:27:56,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,946 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,950 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 [2019-11-20 03:27:56,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,953 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:56,953 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:56,960 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,974 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 [2019-11-20 03:27:56,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,975 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,982 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 [2019-11-20 03:27:56,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,987 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:56,991 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 [2019-11-20 03:27:56,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:56,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:56,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:56,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:56,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:56,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:56,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:56,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:57,026 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 [2019-11-20 03:27:57,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:57,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,028 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:57,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:57,029 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:57,032 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 [2019-11-20 03:27:57,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:57,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:57,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:57,035 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:57,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:27:57,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:57,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,041 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:57,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:57,042 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:27:57,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:57,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:57,049 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:57,050 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:57,054 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 [2019-11-20 03:27:57,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,057 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,057 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,059 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) [2019-11-20 03:27:57,063 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,065 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,065 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,065 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,065 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,066 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,066 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,069 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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 [2019-11-20 03:27:57,073 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 [2019-11-20 03:27:57,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,075 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,075 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,077 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,083 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 [2019-11-20 03:27:57,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,085 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,085 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,087 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,091 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 [2019-11-20 03:27:57,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,093 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:27:57,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,094 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:27:57,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:27:57,095 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,098 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 [2019-11-20 03:27:57,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,101 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,105 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/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) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,108 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 [2019-11-20 03:27:57,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,112 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,112 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,119 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:27:57,132 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 [2019-11-20 03:27:57,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,135 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,136 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,141 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,145 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 [2019-11-20 03:27:57,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,146 INFO L203 nArgumentSynthesizer]: 4 stem disjuncts [2019-11-20 03:27:57,146 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,151 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2019-11-20 03:27:57,151 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,161 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:27:57,172 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 [2019-11-20 03:27:57,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,176 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,176 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,179 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,186 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 [2019-11-20 03:27:57,188 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:27:57,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:27:57,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:27:57,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:27:57,195 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:27:57,196 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:27:57,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:27:57,248 INFO L443 ModelExtractionUtils]: Simplification made 19 calls to the SMT solver. [2019-11-20 03:27:57,248 INFO L444 ModelExtractionUtils]: 1 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:27:57,251 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:27:57,253 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:27:57,254 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:27:57,254 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~nc_B~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~nc_B~0 Supporting invariants [] [2019-11-20 03:27:57,288 INFO L297 tatePredicateManager]: 14 out of 14 supporting invariants were superfluous and have been removed [2019-11-20 03:27:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:57,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:27:57,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:57,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:27:57,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:27:57,338 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 [2019-11-20 03:27:57,338 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 44 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 03:27:57,349 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 44 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 44 states and 50 transitions. Complement of second has 5 states. [2019-11-20 03:27:57,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:27:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:27:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2019-11-20 03:27:57,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 38 letters. Loop has 2 letters. [2019-11-20 03:27:57,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:57,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 40 letters. Loop has 2 letters. [2019-11-20 03:27:57,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:57,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 22 transitions. Stem has 38 letters. Loop has 4 letters. [2019-11-20 03:27:57,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:27:57,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 50 transitions. [2019-11-20 03:27:57,351 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:57,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 44 states and 50 transitions. [2019-11-20 03:27:57,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2019-11-20 03:27:57,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-20 03:27:57,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 50 transitions. [2019-11-20 03:27:57,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:27:57,353 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-11-20 03:27:57,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 50 transitions. [2019-11-20 03:27:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-11-20 03:27:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-20 03:27:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2019-11-20 03:27:57,355 INFO L711 BuchiCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-11-20 03:27:57,355 INFO L591 BuchiCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-11-20 03:27:57,355 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-11-20 03:27:57,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 50 transitions. [2019-11-20 03:27:57,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:57,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:57,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:57,356 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:57,357 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:57,357 INFO L794 eck$LassoCheckResult]: Stem: 1745#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1742#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1719#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1720#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1721#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1722#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1753#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1752#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1751#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1750#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1749#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1748#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1747#L19-3 assume !(main_~i~0 < 5); 1717#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1718#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1743#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1744#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1740#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1741#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1760#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1759#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1758#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1757#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1756#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1755#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1754#L23-3 assume !(main_~i~0 < 5); 1738#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1739#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1746#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1725#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1726#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1723#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1724#L28-4 main_~nc_B~0 := 0; 1734#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1735#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 1736#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1737#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1727#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1728#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1733#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 1729#L41-2 [2019-11-20 03:27:57,357 INFO L796 eck$LassoCheckResult]: Loop: 1729#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1730#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1729#L41-2 [2019-11-20 03:27:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1838818643, now seen corresponding path program 1 times [2019-11-20 03:27:57,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:57,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371473526] [2019-11-20 03:27:57,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:57,388 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:57,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 4 times [2019-11-20 03:27:57,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:57,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186243013] [2019-11-20 03:27:57,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:57,393 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:57,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1873154672, now seen corresponding path program 1 times [2019-11-20 03:27:57,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:57,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668199863] [2019-11-20 03:27:57,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-20 03:27:57,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668199863] [2019-11-20 03:27:57,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963034238] [2019-11-20 03:27:57,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:27:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:57,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 03:27:57,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-20 03:27:57,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:27:57,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-20 03:27:57,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856901129] [2019-11-20 03:27:57,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:57,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 03:27:57,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-20 03:27:57,609 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. cyclomatic complexity: 11 Second operand 9 states. [2019-11-20 03:27:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:57,665 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2019-11-20 03:27:57,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 03:27:57,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 66 transitions. [2019-11-20 03:27:57,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:57,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 47 states and 53 transitions. [2019-11-20 03:27:57,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-20 03:27:57,667 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-20 03:27:57,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 53 transitions. [2019-11-20 03:27:57,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:27:57,667 INFO L688 BuchiCegarLoop]: Abstraction has 47 states and 53 transitions. [2019-11-20 03:27:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 53 transitions. [2019-11-20 03:27:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2019-11-20 03:27:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-20 03:27:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2019-11-20 03:27:57,669 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-11-20 03:27:57,669 INFO L591 BuchiCegarLoop]: Abstraction has 46 states and 52 transitions. [2019-11-20 03:27:57,669 INFO L424 BuchiCegarLoop]: ======== Iteration 14============ [2019-11-20 03:27:57,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 52 transitions. [2019-11-20 03:27:57,670 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:57,670 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:57,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:57,670 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:57,671 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:57,671 INFO L794 eck$LassoCheckResult]: Stem: 1986#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 1984#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 1961#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1962#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1963#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1964#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1996#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1995#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1994#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1993#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1992#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 1990#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 1989#L19-3 assume !(main_~i~0 < 5); 1959#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 1960#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 1982#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1983#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1985#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2004#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2003#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2002#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2001#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2000#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1999#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 1998#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 1997#L23-3 assume !(main_~i~0 < 5); 1980#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 1981#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 1987#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1967#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1968#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1988#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 1991#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 1965#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 1966#L28-4 main_~nc_B~0 := 0; 1976#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1977#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 1978#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 1979#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 1969#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 1970#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1975#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 1971#L41-2 [2019-11-20 03:27:57,671 INFO L796 eck$LassoCheckResult]: Loop: 1971#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 1972#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 1971#L41-2 [2019-11-20 03:27:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:57,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1199867054, now seen corresponding path program 2 times [2019-11-20 03:27:57,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:57,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530781534] [2019-11-20 03:27:57,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:27:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-20 03:27:57,752 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530781534] [2019-11-20 03:27:57,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700136338] [2019-11-20 03:27:57,753 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:27:57,801 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 03:27:57,801 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:27:57,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 03:27:57,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:27:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-20 03:27:57,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:27:57,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-11-20 03:27:57,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615910359] [2019-11-20 03:27:57,869 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:27:57,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 5 times [2019-11-20 03:27:57,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:57,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773419450] [2019-11-20 03:27:57,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:57,876 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:57,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:27:57,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 03:27:57,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2019-11-20 03:27:57,929 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. cyclomatic complexity: 11 Second operand 13 states. [2019-11-20 03:27:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:27:58,033 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2019-11-20 03:27:58,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 03:27:58,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 58 transitions. [2019-11-20 03:27:58,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:58,035 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 50 states and 56 transitions. [2019-11-20 03:27:58,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-20 03:27:58,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-20 03:27:58,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 56 transitions. [2019-11-20 03:27:58,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:27:58,035 INFO L688 BuchiCegarLoop]: Abstraction has 50 states and 56 transitions. [2019-11-20 03:27:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 56 transitions. [2019-11-20 03:27:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-11-20 03:27:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-20 03:27:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2019-11-20 03:27:58,038 INFO L711 BuchiCegarLoop]: Abstraction has 48 states and 54 transitions. [2019-11-20 03:27:58,038 INFO L591 BuchiCegarLoop]: Abstraction has 48 states and 54 transitions. [2019-11-20 03:27:58,038 INFO L424 BuchiCegarLoop]: ======== Iteration 15============ [2019-11-20 03:27:58,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 54 transitions. [2019-11-20 03:27:58,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:27:58,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:27:58,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:27:58,039 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:27:58,039 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:27:58,045 INFO L794 eck$LassoCheckResult]: Stem: 2226#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2224#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 2200#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2201#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2202#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2203#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2237#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2236#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2235#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2233#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2232#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2230#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2229#L19-3 assume !(main_~i~0 < 5); 2198#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 2199#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 2221#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2222#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2225#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2245#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2244#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2243#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2242#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2241#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2240#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2239#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2238#L23-3 assume !(main_~i~0 < 5); 2219#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 2220#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 2227#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2206#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2207#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2228#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2231#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2204#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 2205#L28-4 main_~nc_B~0 := 0; 2215#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2216#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2217#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2218#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2234#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2223#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 2208#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 2209#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2214#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2210#L41-2 [2019-11-20 03:27:58,047 INFO L796 eck$LassoCheckResult]: Loop: 2210#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2211#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 2210#L41-2 [2019-11-20 03:27:58,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:58,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1976327923, now seen corresponding path program 3 times [2019-11-20 03:27:58,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:58,048 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913614779] [2019-11-20 03:27:58,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:58,123 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 6 times [2019-11-20 03:27:58,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:58,131 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560327433] [2019-11-20 03:27:58,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:58,148 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:27:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:27:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash -875586576, now seen corresponding path program 2 times [2019-11-20 03:27:58,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:27:58,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272919497] [2019-11-20 03:27:58,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:27:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:27:58,218 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:00,594 WARN L191 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 314 DAG size of output: 233 [2019-11-20 03:28:00,750 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2019-11-20 03:28:00,753 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:28:00,753 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:28:00,753 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:28:00,753 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:28:00,753 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:28:00,753 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:00,753 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:28:00,753 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:28:00,753 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration15_Lasso [2019-11-20 03:28:00,753 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:28:00,753 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:28:00,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:00,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:00,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:00,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:00,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:00,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:00,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:00,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,412 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-11-20 03:28:01,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:01,540 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:02,294 WARN L191 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-11-20 03:28:02,422 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:28:02,422 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:02,431 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 [2019-11-20 03:28:02,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,439 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 78 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 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,443 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 [2019-11-20 03:28:02,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,445 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:02,446 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 79 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 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,451 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 [2019-11-20 03:28:02,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,453 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:02,454 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 80 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 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,457 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 [2019-11-20 03:28:02,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,460 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,460 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,462 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 81 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 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,466 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:02,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,468 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,468 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,470 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 82 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 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:02,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,476 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,476 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:02,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 83 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 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,481 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 [2019-11-20 03:28:02,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:02,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 84 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 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,488 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 [2019-11-20 03:28:02,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,489 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,489 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,489 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 85 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 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,498 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 [2019-11-20 03:28:02,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,501 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,501 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,507 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:02,520 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 [2019-11-20 03:28:02,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,522 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-20 03:28:02,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,524 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 03:28:02,524 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,528 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:02,547 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:02,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,549 INFO L203 nArgumentSynthesizer]: 12 stem disjuncts [2019-11-20 03:28:02,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,569 INFO L401 nArgumentSynthesizer]: We have 28 Motzkin's Theorem applications. [2019-11-20 03:28:02,569 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,598 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 88 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 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,602 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 [2019-11-20 03:28:02,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,605 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,605 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,610 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 89 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 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,618 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 [2019-11-20 03:28:02,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,620 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,620 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,622 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 90 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 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:02,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:02,631 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 91 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 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,634 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 [2019-11-20 03:28:02,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,636 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:02,637 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 92 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 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,641 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 [2019-11-20 03:28:02,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,646 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,646 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,651 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:02,664 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 [2019-11-20 03:28:02,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,668 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,668 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,672 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:02,684 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 [2019-11-20 03:28:02,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,687 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:02,700 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 [2019-11-20 03:28:02,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,703 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,703 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,707 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:02,716 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 [2019-11-20 03:28:02,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,720 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 97 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 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,725 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:02,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:02,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:02,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:02,728 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 98 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 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,732 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 [2019-11-20 03:28:02,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:02,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:02,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:02,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:02,740 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:02,740 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:02,752 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:28:02,789 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2019-11-20 03:28:02,789 INFO L444 ModelExtractionUtils]: 1 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 99 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 99 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:02,793 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:28:02,794 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:28:02,795 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:28:02,795 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nc_A~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nc_A~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 03:28:02,901 INFO L297 tatePredicateManager]: 41 out of 41 supporting invariants were superfluous and have been removed [2019-11-20 03:28:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:02,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:28:02,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:02,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:28:02,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:02,955 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 [2019-11-20 03:28:02,955 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 54 transitions. cyclomatic complexity: 11 Second operand 3 states. [2019-11-20 03:28:02,966 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 54 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 52 states and 60 transitions. Complement of second has 5 states. [2019-11-20 03:28:02,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:28:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:28:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2019-11-20 03:28:02,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 44 letters. Loop has 2 letters. [2019-11-20 03:28:02,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:02,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 46 letters. Loop has 2 letters. [2019-11-20 03:28:02,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:02,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 44 letters. Loop has 4 letters. [2019-11-20 03:28:02,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:02,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 60 transitions. [2019-11-20 03:28:02,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:02,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 52 states and 60 transitions. [2019-11-20 03:28:02,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-11-20 03:28:02,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-20 03:28:02,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 60 transitions. [2019-11-20 03:28:02,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:02,970 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-11-20 03:28:02,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 60 transitions. [2019-11-20 03:28:02,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-11-20 03:28:02,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-20 03:28:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2019-11-20 03:28:02,972 INFO L711 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-11-20 03:28:02,972 INFO L591 BuchiCegarLoop]: Abstraction has 52 states and 60 transitions. [2019-11-20 03:28:02,973 INFO L424 BuchiCegarLoop]: ======== Iteration 16============ [2019-11-20 03:28:02,973 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 60 transitions. [2019-11-20 03:28:02,973 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:02,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:02,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:02,974 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:02,974 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:02,974 INFO L794 eck$LassoCheckResult]: Stem: 2651#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2648#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 2623#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2624#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2625#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2626#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2661#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2660#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2659#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2658#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2657#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2655#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2654#L19-3 assume !(main_~i~0 < 5); 2621#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 2622#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 2646#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2647#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2650#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2670#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2669#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2668#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2667#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2666#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2665#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2664#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2663#L23-3 assume !(main_~i~0 < 5); 2642#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 2643#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 2652#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2629#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2630#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2653#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2656#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2627#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 2628#L28-4 main_~nc_B~0 := 0; 2638#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2639#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2640#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2641#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2662#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2649#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 2631#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 2632#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2644#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2645#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2637#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2633#L41-2 [2019-11-20 03:28:02,974 INFO L796 eck$LassoCheckResult]: Loop: 2633#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2634#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 2633#L41-2 [2019-11-20 03:28:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:02,975 INFO L82 PathProgramCache]: Analyzing trace with hash -875586574, now seen corresponding path program 4 times [2019-11-20 03:28:02,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:02,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458135645] [2019-11-20 03:28:02,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,017 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:03,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:03,017 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 7 times [2019-11-20 03:28:03,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:03,017 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801756673] [2019-11-20 03:28:03,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,022 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:03,022 INFO L82 PathProgramCache]: Analyzing trace with hash 374894997, now seen corresponding path program 3 times [2019-11-20 03:28:03,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:03,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212900801] [2019-11-20 03:28:03,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-20 03:28:03,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212900801] [2019-11-20 03:28:03,093 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518780695] [2019-11-20 03:28:03,093 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:28:03,160 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 03:28:03,160 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:28:03,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 03:28:03,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-20 03:28:03,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:28:03,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-20 03:28:03,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942831893] [2019-11-20 03:28:03,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:28:03,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 03:28:03,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-20 03:28:03,305 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-11-20 03:28:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:28:03,512 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2019-11-20 03:28:03,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 03:28:03,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 78 transitions. [2019-11-20 03:28:03,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:03,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 55 states and 63 transitions. [2019-11-20 03:28:03,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-11-20 03:28:03,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-20 03:28:03,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 63 transitions. [2019-11-20 03:28:03,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:03,514 INFO L688 BuchiCegarLoop]: Abstraction has 55 states and 63 transitions. [2019-11-20 03:28:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 63 transitions. [2019-11-20 03:28:03,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-11-20 03:28:03,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-20 03:28:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2019-11-20 03:28:03,517 INFO L711 BuchiCegarLoop]: Abstraction has 54 states and 62 transitions. [2019-11-20 03:28:03,517 INFO L591 BuchiCegarLoop]: Abstraction has 54 states and 62 transitions. [2019-11-20 03:28:03,517 INFO L424 BuchiCegarLoop]: ======== Iteration 17============ [2019-11-20 03:28:03,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 62 transitions. [2019-11-20 03:28:03,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:03,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:03,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:03,519 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:03,519 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:03,519 INFO L794 eck$LassoCheckResult]: Stem: 2937#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 2934#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 2911#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2912#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2913#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2914#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2947#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2946#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2945#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2944#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2943#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 2941#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 2940#L19-3 assume !(main_~i~0 < 5); 2909#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 2910#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 2932#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2933#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2936#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2957#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2956#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2955#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2954#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2953#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2952#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 2951#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 2950#L23-3 assume !(main_~i~0 < 5); 2930#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 2931#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 2938#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2917#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2918#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2939#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 2942#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 2915#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 2916#L28-4 main_~nc_B~0 := 0; 2926#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2927#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2928#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2929#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2958#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2949#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 2948#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 2935#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 2919#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 2920#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2960#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2959#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2925#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 2921#L41-2 [2019-11-20 03:28:03,519 INFO L796 eck$LassoCheckResult]: Loop: 2921#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 2922#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 2921#L41-2 [2019-11-20 03:28:03,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:03,519 INFO L82 PathProgramCache]: Analyzing trace with hash 356019245, now seen corresponding path program 5 times [2019-11-20 03:28:03,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:03,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920508040] [2019-11-20 03:28:03,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,559 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 8 times [2019-11-20 03:28:03,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:03,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820234123] [2019-11-20 03:28:03,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:03,564 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:03,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:03,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1462886640, now seen corresponding path program 4 times [2019-11-20 03:28:03,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:03,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86595931] [2019-11-20 03:28:03,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-20 03:28:03,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86595931] [2019-11-20 03:28:03,629 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706438345] [2019-11-20 03:28:03,629 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:28:03,697 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 03:28:03,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:28:03,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 03:28:03,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-20 03:28:03,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:28:03,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-20 03:28:03,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960460943] [2019-11-20 03:28:03,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:28:03,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-20 03:28:03,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-20 03:28:03,850 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-11-20 03:28:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:28:03,985 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2019-11-20 03:28:03,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 03:28:03,986 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 90 transitions. [2019-11-20 03:28:03,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:03,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 57 states and 65 transitions. [2019-11-20 03:28:03,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-11-20 03:28:03,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-20 03:28:03,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 65 transitions. [2019-11-20 03:28:03,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:03,988 INFO L688 BuchiCegarLoop]: Abstraction has 57 states and 65 transitions. [2019-11-20 03:28:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 65 transitions. [2019-11-20 03:28:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-11-20 03:28:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-20 03:28:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2019-11-20 03:28:03,990 INFO L711 BuchiCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-11-20 03:28:03,990 INFO L591 BuchiCegarLoop]: Abstraction has 56 states and 64 transitions. [2019-11-20 03:28:03,991 INFO L424 BuchiCegarLoop]: ======== Iteration 18============ [2019-11-20 03:28:03,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 64 transitions. [2019-11-20 03:28:03,991 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:03,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:03,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:03,992 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:03,992 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:03,993 INFO L794 eck$LassoCheckResult]: Stem: 3241#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3238#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 3214#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3215#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3216#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3217#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3254#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3251#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3250#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3249#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3248#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 3245#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 3244#L19-3 assume !(main_~i~0 < 5); 3212#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 3213#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 3236#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3237#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3240#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3263#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3262#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3261#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3260#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3259#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3258#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 3257#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 3256#L23-3 assume !(main_~i~0 < 5); 3233#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 3234#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 3242#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3220#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 3221#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3243#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 3264#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3247#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 3246#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 3218#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 3219#L28-4 main_~nc_B~0 := 0; 3229#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3230#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 3231#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3232#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 3255#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3253#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 3252#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 3239#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 3222#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 3223#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 3227#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 3235#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 3265#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 3224#L41-2 [2019-11-20 03:28:03,993 INFO L796 eck$LassoCheckResult]: Loop: 3224#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 3225#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 3224#L41-2 [2019-11-20 03:28:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:03,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1412851758, now seen corresponding path program 6 times [2019-11-20 03:28:03,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:03,994 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765122189] [2019-11-20 03:28:03,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:04,033 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:04,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:04,033 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 9 times [2019-11-20 03:28:04,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:04,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939537661] [2019-11-20 03:28:04,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:04,038 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:04,039 INFO L82 PathProgramCache]: Analyzing trace with hash -540871307, now seen corresponding path program 5 times [2019-11-20 03:28:04,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:04,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327187740] [2019-11-20 03:28:04,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:04,074 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:07,324 WARN L191 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 362 DAG size of output: 267 [2019-11-20 03:28:07,549 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2019-11-20 03:28:07,552 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:28:07,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:28:07,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:28:07,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:28:07,552 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:28:07,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:07,552 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:28:07,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:28:07,553 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration18_Lasso [2019-11-20 03:28:07,553 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:28:07,553 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:28:07,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:07,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:08,207 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2019-11-20 03:28:08,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:08,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:08,538 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-20 03:28:10,313 WARN L191 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2019-11-20 03:28:10,421 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:28:10,421 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 102 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 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:10,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,431 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:10,431 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:10,433 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 103 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 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,437 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 [2019-11-20 03:28:10,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,440 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 104 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 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,443 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 [2019-11-20 03:28:10,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,445 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,446 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 105 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 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,450 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 [2019-11-20 03:28:10,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 106 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 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,456 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 [2019-11-20 03:28:10,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,458 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:10,458 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:10,461 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 107 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 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:10,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,471 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 108 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 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,474 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 [2019-11-20 03:28:10,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,476 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,476 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,477 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 109 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 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,482 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 [2019-11-20 03:28:10,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,485 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 110 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 110 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,489 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 [2019-11-20 03:28:10,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:10,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:10,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 111 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 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,497 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:10,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,499 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,500 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 112 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 112 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,504 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 [2019-11-20 03:28:10,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,506 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,506 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 113 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 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,511 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 [2019-11-20 03:28:10,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,514 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 114 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 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,517 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 [2019-11-20 03:28:10,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,520 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 115 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 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,524 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 [2019-11-20 03:28:10,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,526 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,527 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 116 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 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,530 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 [2019-11-20 03:28:10,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,533 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 117 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 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,540 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 [2019-11-20 03:28:10,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:10,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,543 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:10,543 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:10,547 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 118 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 118 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,553 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 [2019-11-20 03:28:10,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,555 INFO L203 nArgumentSynthesizer]: 36 stem disjuncts [2019-11-20 03:28:10,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,603 INFO L401 nArgumentSynthesizer]: We have 76 Motzkin's Theorem applications. [2019-11-20 03:28:10,604 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:10,678 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 119 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 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,682 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 [2019-11-20 03:28:10,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:10,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:10,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:10,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:10,691 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:10,691 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:10,709 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:28:10,787 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-11-20 03:28:10,788 INFO L444 ModelExtractionUtils]: 3 out of 28 variables were initially zero. Simplification set additionally 22 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:10,792 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:10,799 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:28:10,800 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:28:10,800 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2019-11-20 03:28:11,047 INFO L297 tatePredicateManager]: 38 out of 40 supporting invariants were superfluous and have been removed [2019-11-20 03:28:11,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:11,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 03:28:11,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:11,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 03:28:11,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:11,298 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.10 stem predicates 2 loop predicates [2019-11-20 03:28:11,298 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-11-20 03:28:11,448 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14. Second operand 12 states. Result 91 states and 110 transitions. Complement of second has 15 states. [2019-11-20 03:28:11,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 10 stem states 1 non-accepting loop states 2 accepting loop states [2019-11-20 03:28:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 03:28:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 55 transitions. [2019-11-20 03:28:11,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 55 transitions. Stem has 50 letters. Loop has 2 letters. [2019-11-20 03:28:11,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:11,451 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:28:11,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:11,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 03:28:11,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:11,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 03:28:11,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:11,683 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.10 stem predicates 2 loop predicates [2019-11-20 03:28:11,683 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-11-20 03:28:11,859 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14. Second operand 12 states. Result 91 states and 110 transitions. Complement of second has 15 states. [2019-11-20 03:28:11,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 10 stem states 1 non-accepting loop states 2 accepting loop states [2019-11-20 03:28:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 03:28:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 55 transitions. [2019-11-20 03:28:11,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 55 transitions. Stem has 50 letters. Loop has 2 letters. [2019-11-20 03:28:11,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:11,861 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:28:11,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:11,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 03:28:11,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:12,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 03:28:12,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:12,112 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.10 stem predicates 2 loop predicates [2019-11-20 03:28:12,112 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14 Second operand 12 states. [2019-11-20 03:28:12,291 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 64 transitions. cyclomatic complexity: 14. Second operand 12 states. Result 107 states and 133 transitions. Complement of second has 15 states. [2019-11-20 03:28:12,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 10 stem states 1 non-accepting loop states 2 accepting loop states [2019-11-20 03:28:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 03:28:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 58 transitions. [2019-11-20 03:28:12,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 58 transitions. Stem has 50 letters. Loop has 2 letters. [2019-11-20 03:28:12,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:12,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 58 transitions. Stem has 52 letters. Loop has 2 letters. [2019-11-20 03:28:12,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:12,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 58 transitions. Stem has 50 letters. Loop has 4 letters. [2019-11-20 03:28:12,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:12,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 133 transitions. [2019-11-20 03:28:12,295 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2019-11-20 03:28:12,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 105 states and 129 transitions. [2019-11-20 03:28:12,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2019-11-20 03:28:12,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 55 [2019-11-20 03:28:12,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 129 transitions. [2019-11-20 03:28:12,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:12,296 INFO L688 BuchiCegarLoop]: Abstraction has 105 states and 129 transitions. [2019-11-20 03:28:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 129 transitions. [2019-11-20 03:28:12,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 73. [2019-11-20 03:28:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-20 03:28:12,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2019-11-20 03:28:12,299 INFO L711 BuchiCegarLoop]: Abstraction has 73 states and 85 transitions. [2019-11-20 03:28:12,299 INFO L591 BuchiCegarLoop]: Abstraction has 73 states and 85 transitions. [2019-11-20 03:28:12,299 INFO L424 BuchiCegarLoop]: ======== Iteration 19============ [2019-11-20 03:28:12,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 85 transitions. [2019-11-20 03:28:12,300 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 03:28:12,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:12,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:12,301 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:12,301 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:12,301 INFO L794 eck$LassoCheckResult]: Stem: 4354#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4348#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 4325#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4326#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4327#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4328#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4373#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4371#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4369#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4367#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4365#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4361#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4360#L19-3 assume !(main_~i~0 < 5); 4323#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 4324#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 4346#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4347#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4353#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4374#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4372#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4370#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4368#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4366#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4364#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4363#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4362#L23-3 assume !(main_~i~0 < 5); 4344#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 4345#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 4357#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4331#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4332#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4381#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4358#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4359#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4375#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4376#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 4355#L28-4 main_~nc_B~0 := 0; 4356#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4383#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4384#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4351#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4352#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4395#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4394#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4393#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 4333#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 4334#L41-2 [2019-11-20 03:28:12,301 INFO L796 eck$LassoCheckResult]: Loop: 4334#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4338#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 4334#L41-2 [2019-11-20 03:28:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:12,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1972313288, now seen corresponding path program 2 times [2019-11-20 03:28:12,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:12,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191219469] [2019-11-20 03:28:12,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:12,336 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash 3558, now seen corresponding path program 1 times [2019-11-20 03:28:12,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:12,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683694541] [2019-11-20 03:28:12,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:12,340 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1312494829, now seen corresponding path program 7 times [2019-11-20 03:28:12,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:12,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747539731] [2019-11-20 03:28:12,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:12,373 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:20,845 WARN L191 SmtUtils]: Spent 8.40 s on a formula simplification. DAG size of input: 313 DAG size of output: 235 [2019-11-20 03:28:21,173 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-11-20 03:28:21,176 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:28:21,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:28:21,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:28:21,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:28:21,176 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:28:21,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:21,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:28:21,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:28:21,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration19_Lasso [2019-11-20 03:28:21,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:28:21,176 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:28:21,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,703 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2019-11-20 03:28:21,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:21,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:22,147 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:28:22,147 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 121 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 121 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,150 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 [2019-11-20 03:28:22,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:22,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,152 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:22,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:22,153 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,156 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:22,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:22,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:22,159 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 123 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 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,172 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 [2019-11-20 03:28:22,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:22,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,174 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:22,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:22,175 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 124 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 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,179 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 [2019-11-20 03:28:22,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,181 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,181 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:22,187 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,200 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 [2019-11-20 03:28:22,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:22,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:22,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,204 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,212 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 [2019-11-20 03:28:22,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:22,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:22,215 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,216 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,225 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 [2019-11-20 03:28:22,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:22,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:22,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,230 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,241 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:22,243 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,244 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,245 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,248 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,256 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 [2019-11-20 03:28:22,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,260 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,260 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,265 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,270 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 [2019-11-20 03:28:22,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,273 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,273 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 131 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,284 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 [2019-11-20 03:28:22,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,286 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,288 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,288 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 131 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,291 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 132 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:22,300 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 132 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,303 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,303 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:22,306 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 133 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 133 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,309 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 [2019-11-20 03:28:22,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,312 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,312 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:22,315 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 134 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 134 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,321 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 [2019-11-20 03:28:22,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,323 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-20 03:28:22,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,324 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 03:28:22,324 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:22,327 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 135 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 135 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,331 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 [2019-11-20 03:28:22,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,334 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,334 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:22,337 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 136 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 136 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,341 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 [2019-11-20 03:28:22,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:22,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:22,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:22,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:22,348 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:22,348 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:22,360 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:28:22,398 INFO L443 ModelExtractionUtils]: Simplification made 24 calls to the SMT solver. [2019-11-20 03:28:22,398 INFO L444 ModelExtractionUtils]: 1 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 137 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 137 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:22,400 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:28:22,402 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:28:22,402 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:28:22,403 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~nc_A~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~nc_A~0 Supporting invariants [] [2019-11-20 03:28:22,523 INFO L297 tatePredicateManager]: 42 out of 43 supporting invariants were superfluous and have been removed [2019-11-20 03:28:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:22,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:28:22,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:22,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 03:28:22,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:22,584 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 [2019-11-20 03:28:22,584 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 85 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-20 03:28:22,613 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 85 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 102 states and 124 transitions. Complement of second has 6 states. [2019-11-20 03:28:22,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 2 accepting loop states [2019-11-20 03:28:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:28:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2019-11-20 03:28:22,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 46 letters. Loop has 2 letters. [2019-11-20 03:28:22,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:22,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 48 letters. Loop has 2 letters. [2019-11-20 03:28:22,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:22,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 46 letters. Loop has 4 letters. [2019-11-20 03:28:22,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:22,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 124 transitions. [2019-11-20 03:28:22,615 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 03:28:22,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 95 states and 115 transitions. [2019-11-20 03:28:22,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2019-11-20 03:28:22,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-20 03:28:22,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 115 transitions. [2019-11-20 03:28:22,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:22,617 INFO L688 BuchiCegarLoop]: Abstraction has 95 states and 115 transitions. [2019-11-20 03:28:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 115 transitions. [2019-11-20 03:28:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2019-11-20 03:28:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-20 03:28:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2019-11-20 03:28:22,619 INFO L711 BuchiCegarLoop]: Abstraction has 81 states and 97 transitions. [2019-11-20 03:28:22,619 INFO L591 BuchiCegarLoop]: Abstraction has 81 states and 97 transitions. [2019-11-20 03:28:22,619 INFO L424 BuchiCegarLoop]: ======== Iteration 20============ [2019-11-20 03:28:22,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states and 97 transitions. [2019-11-20 03:28:22,619 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 03:28:22,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:22,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:22,620 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:22,620 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:22,621 INFO L794 eck$LassoCheckResult]: Stem: 4874#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 4872#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 4847#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4848#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4849#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4850#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4890#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4888#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4886#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4884#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4882#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 4878#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 4877#L19-3 assume !(main_~i~0 < 5); 4845#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 4846#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 4868#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4869#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4873#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4891#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4889#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4887#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4885#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4883#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4881#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 4880#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 4879#L23-3 assume !(main_~i~0 < 5); 4864#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 4865#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 4875#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4853#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4854#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4876#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4896#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4897#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 4919#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 4918#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 4917#L28-4 main_~nc_B~0 := 0; 4916#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4915#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4914#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4913#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4912#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4911#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 4910#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 4909#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 4855#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 4856#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4858#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 4925#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4866#L41 [2019-11-20 03:28:22,621 INFO L796 eck$LassoCheckResult]: Loop: 4866#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 4867#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 4866#L41 [2019-11-20 03:28:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2032634054, now seen corresponding path program 2 times [2019-11-20 03:28:22,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:22,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75867037] [2019-11-20 03:28:22,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:22,659 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:22,672 INFO L82 PathProgramCache]: Analyzing trace with hash 3708, now seen corresponding path program 2 times [2019-11-20 03:28:22,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:22,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444540870] [2019-11-20 03:28:22,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:22,678 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:22,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:22,678 INFO L82 PathProgramCache]: Analyzing trace with hash -848791039, now seen corresponding path program 6 times [2019-11-20 03:28:22,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:22,679 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990612023] [2019-11-20 03:28:22,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:22,743 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:30,375 WARN L191 SmtUtils]: Spent 7.55 s on a formula simplification. DAG size of input: 352 DAG size of output: 258 [2019-11-20 03:28:30,600 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2019-11-20 03:28:30,603 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:28:30,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:28:30,604 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:28:30,604 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:28:30,604 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:28:30,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:30,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:28:30,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:28:30,604 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration20_Lasso [2019-11-20 03:28:30,604 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:28:30,604 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:28:30,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:30,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:31,547 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2019-11-20 03:28:31,808 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2019-11-20 03:28:31,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:31,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:32,567 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-11-20 03:28:32,665 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:28:32,666 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 138 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:32,681 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:32,683 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,683 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 138 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,686 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 139 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:32,700 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 [2019-11-20 03:28:32,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 139 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,704 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 140 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 140 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,715 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:32,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 141 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 141 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,723 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 [2019-11-20 03:28:32,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,726 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 142 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:32,736 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 [2019-11-20 03:28:32,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 142 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,740 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 143 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:32,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:32,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 143 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 144 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:32,755 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 [2019-11-20 03:28:32,756 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,756 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,757 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 144 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,759 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 145 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 145 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,767 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 [2019-11-20 03:28:32,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,770 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:32,770 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:32,773 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 146 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 146 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,777 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 [2019-11-20 03:28:32,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,780 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 147 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:32,784 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 147 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,787 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 148 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 148 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,791 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 [2019-11-20 03:28:32,792 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,792 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,792 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,792 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,792 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,792 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,793 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 149 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 149 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,798 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 [2019-11-20 03:28:32,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,800 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:32,800 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:32,802 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 150 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 150 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,806 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 [2019-11-20 03:28:32,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,807 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,809 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 151 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 151 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,812 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 [2019-11-20 03:28:32,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,815 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 152 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 152 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,819 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 [2019-11-20 03:28:32,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,821 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:32,821 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:32,823 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 153 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 153 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,827 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 [2019-11-20 03:28:32,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:32,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:32,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:32,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 154 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 154 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,834 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 [2019-11-20 03:28:32,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,836 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-20 03:28:32,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,841 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 03:28:32,842 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:32,848 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 155 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 155 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,854 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 [2019-11-20 03:28:32,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:32,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:32,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:32,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:32,861 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:32,861 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:32,877 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:28:32,954 INFO L443 ModelExtractionUtils]: Simplification made 26 calls to the SMT solver. [2019-11-20 03:28:32,954 INFO L444 ModelExtractionUtils]: 0 out of 28 variables were initially zero. Simplification set additionally 24 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 156 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:32,963 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 156 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:32,966 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:28:32,966 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:28:32,967 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~j~0 - 2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2019-11-20 03:28:33,180 INFO L297 tatePredicateManager]: 57 out of 58 supporting invariants were superfluous and have been removed [2019-11-20 03:28:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:33,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 03:28:33,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:33,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 03:28:33,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:33,424 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.5 stem predicates 2 loop predicates [2019-11-20 03:28:33,424 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81 states and 97 transitions. cyclomatic complexity: 25 Second operand 7 states. [2019-11-20 03:28:33,548 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81 states and 97 transitions. cyclomatic complexity: 25. Second operand 7 states. Result 140 states and 179 transitions. Complement of second has 12 states. [2019-11-20 03:28:33,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 5 stem states 2 non-accepting loop states 2 accepting loop states [2019-11-20 03:28:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 03:28:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2019-11-20 03:28:33,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 49 letters. Loop has 2 letters. [2019-11-20 03:28:33,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:33,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 51 letters. Loop has 2 letters. [2019-11-20 03:28:33,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:33,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 49 letters. Loop has 4 letters. [2019-11-20 03:28:33,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:33,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 140 states and 179 transitions. [2019-11-20 03:28:33,554 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 03:28:33,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 140 states to 106 states and 129 transitions. [2019-11-20 03:28:33,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-20 03:28:33,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-20 03:28:33,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 129 transitions. [2019-11-20 03:28:33,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:33,556 INFO L688 BuchiCegarLoop]: Abstraction has 106 states and 129 transitions. [2019-11-20 03:28:33,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 129 transitions. [2019-11-20 03:28:33,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2019-11-20 03:28:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-20 03:28:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2019-11-20 03:28:33,561 INFO L711 BuchiCegarLoop]: Abstraction has 98 states and 120 transitions. [2019-11-20 03:28:33,561 INFO L591 BuchiCegarLoop]: Abstraction has 98 states and 120 transitions. [2019-11-20 03:28:33,561 INFO L424 BuchiCegarLoop]: ======== Iteration 21============ [2019-11-20 03:28:33,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 120 transitions. [2019-11-20 03:28:33,564 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 03:28:33,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:33,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:33,565 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:33,565 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:33,565 INFO L794 eck$LassoCheckResult]: Stem: 5527#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 5525#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 5498#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5499#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5500#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5501#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5547#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5545#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5543#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5541#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5539#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5535#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5534#L19-3 assume !(main_~i~0 < 5); 5496#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 5497#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 5520#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5521#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5526#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5548#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5546#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5544#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5542#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5540#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5538#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5537#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5536#L23-3 assume !(main_~i~0 < 5); 5515#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 5516#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 5530#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5531#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5553#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5554#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5532#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5533#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5551#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5552#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 5528#L28-4 main_~nc_B~0 := 0; 5529#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5557#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5513#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5514#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5524#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5556#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5555#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5550#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5549#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5522#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 5523#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 5570#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5569#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5567#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5566#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5565#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5563#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5564#L41-2 [2019-11-20 03:28:33,565 INFO L796 eck$LassoCheckResult]: Loop: 5564#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5577#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5564#L41-2 [2019-11-20 03:28:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:33,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1046009104, now seen corresponding path program 7 times [2019-11-20 03:28:33,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:33,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147314721] [2019-11-20 03:28:33,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:33,600 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:33,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:33,600 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 10 times [2019-11-20 03:28:33,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:33,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216980658] [2019-11-20 03:28:33,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:33,604 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:33,605 INFO L82 PathProgramCache]: Analyzing trace with hash -192399085, now seen corresponding path program 8 times [2019-11-20 03:28:33,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:33,605 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998815048] [2019-11-20 03:28:33,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:33,707 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-20 03:28:33,707 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998815048] [2019-11-20 03:28:33,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939657914] [2019-11-20 03:28:33,708 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:28:33,780 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 03:28:33,780 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:28:33,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 03:28:33,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-11-20 03:28:33,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:28:33,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2019-11-20 03:28:33,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644261721] [2019-11-20 03:28:33,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:28:33,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 03:28:33,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-20 03:28:33,899 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. cyclomatic complexity: 36 Second operand 15 states. [2019-11-20 03:28:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:28:34,196 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2019-11-20 03:28:34,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 03:28:34,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 130 transitions. [2019-11-20 03:28:34,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:34,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 64 states and 74 transitions. [2019-11-20 03:28:34,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-11-20 03:28:34,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-20 03:28:34,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 74 transitions. [2019-11-20 03:28:34,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:34,199 INFO L688 BuchiCegarLoop]: Abstraction has 64 states and 74 transitions. [2019-11-20 03:28:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 74 transitions. [2019-11-20 03:28:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2019-11-20 03:28:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-20 03:28:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2019-11-20 03:28:34,201 INFO L711 BuchiCegarLoop]: Abstraction has 63 states and 73 transitions. [2019-11-20 03:28:34,201 INFO L591 BuchiCegarLoop]: Abstraction has 63 states and 73 transitions. [2019-11-20 03:28:34,201 INFO L424 BuchiCegarLoop]: ======== Iteration 22============ [2019-11-20 03:28:34,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 73 transitions. [2019-11-20 03:28:34,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:34,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:34,202 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:34,203 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:34,203 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:34,203 INFO L794 eck$LassoCheckResult]: Stem: 5930#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 5926#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 5903#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5904#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5905#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5906#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5944#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5941#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5940#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5939#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5938#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 5935#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 5934#L19-3 assume !(main_~i~0 < 5); 5901#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 5902#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 5928#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5929#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5924#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5925#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5954#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5953#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5952#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5951#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5949#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 5947#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 5946#L23-3 assume !(main_~i~0 < 5); 5921#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 5922#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 5931#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5932#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5933#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5909#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5910#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5950#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5948#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5937#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 5936#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 5907#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 5908#L28-4 main_~nc_B~0 := 0; 5917#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5918#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5919#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5920#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5945#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5943#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 5942#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 5927#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 5911#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 5912#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5962#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5961#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5923#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5913#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5914#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 5956#L41-2 [2019-11-20 03:28:34,203 INFO L796 eck$LassoCheckResult]: Loop: 5956#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 5958#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 5956#L41-2 [2019-11-20 03:28:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:34,204 INFO L82 PathProgramCache]: Analyzing trace with hash 750753690, now seen corresponding path program 9 times [2019-11-20 03:28:34,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:34,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490723531] [2019-11-20 03:28:34,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-20 03:28:34,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490723531] [2019-11-20 03:28:34,398 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332004825] [2019-11-20 03:28:34,398 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:28:34,478 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-20 03:28:34,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:28:34,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 03:28:34,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-20 03:28:34,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:28:34,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2019-11-20 03:28:34,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302387696] [2019-11-20 03:28:34,582 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:28:34,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:34,582 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 11 times [2019-11-20 03:28:34,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:34,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777300248] [2019-11-20 03:28:34,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,586 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:34,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:28:34,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-20 03:28:34,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2019-11-20 03:28:34,659 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. cyclomatic complexity: 17 Second operand 21 states. [2019-11-20 03:28:34,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:28:34,884 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2019-11-20 03:28:34,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 03:28:34,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 79 transitions. [2019-11-20 03:28:34,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:34,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 67 states and 77 transitions. [2019-11-20 03:28:34,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-11-20 03:28:34,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-20 03:28:34,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 77 transitions. [2019-11-20 03:28:34,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:34,886 INFO L688 BuchiCegarLoop]: Abstraction has 67 states and 77 transitions. [2019-11-20 03:28:34,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 77 transitions. [2019-11-20 03:28:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2019-11-20 03:28:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-20 03:28:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-11-20 03:28:34,888 INFO L711 BuchiCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-11-20 03:28:34,888 INFO L591 BuchiCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-11-20 03:28:34,888 INFO L424 BuchiCegarLoop]: ======== Iteration 23============ [2019-11-20 03:28:34,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 75 transitions. [2019-11-20 03:28:34,888 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 03:28:34,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:34,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:34,889 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:34,889 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:34,889 INFO L794 eck$LassoCheckResult]: Stem: 6250#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6247#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 6224#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6225#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6226#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6227#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6263#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6260#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6259#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6258#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6257#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 6254#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 6253#L19-3 assume !(main_~i~0 < 5); 6222#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 6223#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 6245#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6246#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6249#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6271#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6270#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6269#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6268#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6267#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6266#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 6265#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 6264#L23-3 assume !(main_~i~0 < 5); 6242#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 6243#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 6251#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6230#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6231#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6252#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6277#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6275#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6273#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6256#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 6255#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 6228#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 6229#L28-4 main_~nc_B~0 := 0; 6238#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6239#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6240#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6241#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6276#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6274#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6272#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6262#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 6261#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 6248#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 6232#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 6233#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6283#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 6282#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6244#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 6234#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6235#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 6279#L41-2 [2019-11-20 03:28:34,889 INFO L796 eck$LassoCheckResult]: Loop: 6279#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 6281#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 6279#L41-2 [2019-11-20 03:28:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:34,890 INFO L82 PathProgramCache]: Analyzing trace with hash 733222869, now seen corresponding path program 10 times [2019-11-20 03:28:34,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:34,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109969723] [2019-11-20 03:28:34,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,933 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:34,933 INFO L82 PathProgramCache]: Analyzing trace with hash 3556, now seen corresponding path program 12 times [2019-11-20 03:28:34,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:34,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61961194] [2019-11-20 03:28:34,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,938 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:34,938 INFO L82 PathProgramCache]: Analyzing trace with hash 252543160, now seen corresponding path program 11 times [2019-11-20 03:28:34,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:34,938 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537405265] [2019-11-20 03:28:34,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:34,979 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:41,233 WARN L191 SmtUtils]: Spent 6.17 s on a formula simplification. DAG size of input: 409 DAG size of output: 297 [2019-11-20 03:28:41,692 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2019-11-20 03:28:41,695 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:28:41,695 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:28:41,695 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:28:41,695 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:28:41,695 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:28:41,695 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:41,695 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:28:41,695 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:28:41,695 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration23_Lasso [2019-11-20 03:28:41,695 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:28:41,696 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:28:41,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:41,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,289 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 85 [2019-11-20 03:28:42,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:42,568 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-20 03:28:44,107 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-11-20 03:28:44,147 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:28:44,147 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 159 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:44,168 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 [2019-11-20 03:28:44,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 159 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,172 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 160 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 160 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,177 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 [2019-11-20 03:28:44,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:44,180 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 161 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 161 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,184 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 [2019-11-20 03:28:44,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:44,187 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 162 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 162 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,190 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 [2019-11-20 03:28:44,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,192 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,192 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:44,193 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 163 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 163 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,196 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 [2019-11-20 03:28:44,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:44,199 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 164 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 164 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,203 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 [2019-11-20 03:28:44,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,205 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:44,205 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:44,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 165 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 165 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,211 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 [2019-11-20 03:28:44,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:44,214 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 166 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:44,224 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 [2019-11-20 03:28:44,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,226 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 166 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,226 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:44,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 167 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 167 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,231 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 [2019-11-20 03:28:44,232 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,233 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:44,233 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:44,235 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 168 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 168 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,239 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 [2019-11-20 03:28:44,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,240 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:44,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:44,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:44,243 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 169 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 169 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,247 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 [2019-11-20 03:28:44,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:44,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:44,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:44,248 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:44,254 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:44,254 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:44,267 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:28:44,290 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-11-20 03:28:44,290 INFO L444 ModelExtractionUtils]: 5 out of 28 variables were initially zero. Simplification set additionally 20 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 170 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 170 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:44,293 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 03:28:44,295 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:28:44,295 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:28:44,295 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nc_A~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~nc_A~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 03:28:44,381 INFO L297 tatePredicateManager]: 28 out of 28 supporting invariants were superfluous and have been removed [2019-11-20 03:28:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:44,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:28:44,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:44,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:28:44,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:44,440 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 [2019-11-20 03:28:44,440 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17 Second operand 3 states. [2019-11-20 03:28:44,449 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 73 states and 87 transitions. Complement of second has 5 states. [2019-11-20 03:28:44,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:28:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:28:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2019-11-20 03:28:44,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 56 letters. Loop has 2 letters. [2019-11-20 03:28:44,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:44,450 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:28:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:44,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:28:44,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:44,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:28:44,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:44,535 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 03:28:44,535 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17 Second operand 3 states. [2019-11-20 03:28:44,547 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 73 states and 87 transitions. Complement of second has 5 states. [2019-11-20 03:28:44,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:28:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:28:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 25 transitions. [2019-11-20 03:28:44,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 25 transitions. Stem has 56 letters. Loop has 2 letters. [2019-11-20 03:28:44,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:44,548 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 03:28:44,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:44,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:28:44,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:44,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 03:28:44,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:44,629 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 03:28:44,630 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17 Second operand 3 states. [2019-11-20 03:28:44,644 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 75 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 76 states and 91 transitions. Complement of second has 4 states. [2019-11-20 03:28:44,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 03:28:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 03:28:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2019-11-20 03:28:44,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 26 transitions. Stem has 56 letters. Loop has 2 letters. [2019-11-20 03:28:44,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:44,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 26 transitions. Stem has 58 letters. Loop has 2 letters. [2019-11-20 03:28:44,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:44,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 26 transitions. Stem has 56 letters. Loop has 4 letters. [2019-11-20 03:28:44,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:44,646 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 91 transitions. [2019-11-20 03:28:44,647 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 03:28:44,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 71 states and 83 transitions. [2019-11-20 03:28:44,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2019-11-20 03:28:44,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-20 03:28:44,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 83 transitions. [2019-11-20 03:28:44,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:44,648 INFO L688 BuchiCegarLoop]: Abstraction has 71 states and 83 transitions. [2019-11-20 03:28:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 83 transitions. [2019-11-20 03:28:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2019-11-20 03:28:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-20 03:28:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2019-11-20 03:28:44,650 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 68 transitions. [2019-11-20 03:28:44,650 INFO L591 BuchiCegarLoop]: Abstraction has 60 states and 68 transitions. [2019-11-20 03:28:44,650 INFO L424 BuchiCegarLoop]: ======== Iteration 24============ [2019-11-20 03:28:44,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 68 transitions. [2019-11-20 03:28:44,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 03:28:44,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:44,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:44,651 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:44,652 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:44,653 INFO L794 eck$LassoCheckResult]: Stem: 7202#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7199#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 7177#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7178#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7179#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7180#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7216#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7214#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7212#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7210#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7209#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7206#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7205#L19-3 assume !(main_~i~0 < 5); 7175#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 7176#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 7197#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7198#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7201#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7229#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7228#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7227#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7226#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7225#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7224#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7223#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7222#L23-3 assume !(main_~i~0 < 5); 7195#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 7196#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 7203#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7183#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7184#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7204#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7215#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7213#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7211#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7208#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7207#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7181#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 7182#L28-4 main_~nc_B~0 := 0; 7191#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7192#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7193#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7194#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7221#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7220#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7219#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7218#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7217#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7200#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 7185#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 7186#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7188#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 7190#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7189#L41 [2019-11-20 03:28:44,653 INFO L796 eck$LassoCheckResult]: Loop: 7189#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 7187#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7189#L41 [2019-11-20 03:28:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:44,653 INFO L82 PathProgramCache]: Analyzing trace with hash -946162842, now seen corresponding path program 3 times [2019-11-20 03:28:44,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:44,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825988966] [2019-11-20 03:28:44,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:44,704 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash 3708, now seen corresponding path program 3 times [2019-11-20 03:28:44,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:44,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411382286] [2019-11-20 03:28:44,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:44,709 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:44,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1270578337, now seen corresponding path program 12 times [2019-11-20 03:28:44,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:44,710 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906150165] [2019-11-20 03:28:44,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:44,762 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:50,247 WARN L191 SmtUtils]: Spent 5.41 s on a formula simplification. DAG size of input: 376 DAG size of output: 272 [2019-11-20 03:28:50,801 WARN L191 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2019-11-20 03:28:50,804 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 03:28:50,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 03:28:50,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 03:28:50,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 03:28:50,804 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 03:28:50,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:50,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 03:28:50,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 03:28:50,805 INFO L133 ssoRankerPreferences]: Filename of dumped script: string-1.i_Iteration24_Lasso [2019-11-20 03:28:50,805 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 03:28:50,805 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 03:28:50,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:50,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:51,567 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2019-11-20 03:28:51,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:51,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:51,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:51,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 03:28:52,083 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2019-11-20 03:28:52,180 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 03:28:52,180 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 171 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,196 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 [2019-11-20 03:28:52,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 171 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,200 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 172 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 172 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,210 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 [2019-11-20 03:28:52,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,212 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,213 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,215 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 173 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 173 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,219 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 [2019-11-20 03:28:52,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,221 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,221 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 174 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 174 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,225 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 [2019-11-20 03:28:52,226 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,226 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,226 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,226 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,227 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,227 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,227 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,228 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 175 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 175 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,231 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 [2019-11-20 03:28:52,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,233 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,234 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 176 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 176 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,238 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 [2019-11-20 03:28:52,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 177 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 177 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,244 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 [2019-11-20 03:28:52,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,246 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,246 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,247 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 178 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,251 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 178 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,253 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 179 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 179 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,259 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 [2019-11-20 03:28:52,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 180 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 180 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,266 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 [2019-11-20 03:28:52,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,268 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,268 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 181 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 181 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:52,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,277 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 182 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 182 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,280 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 [2019-11-20 03:28:52,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 03:28:52,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 03:28:52,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 03:28:52,283 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 183 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 183 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:52,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,289 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,289 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,291 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 184 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 184 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,295 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 [2019-11-20 03:28:52,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,296 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-20 03:28:52,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,297 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 03:28:52,297 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,300 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 185 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,320 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 185 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,322 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,322 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,325 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 186 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 186 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,328 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 03:28:52,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,330 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,330 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,330 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,330 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,333 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 187 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 187 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,336 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 [2019-11-20 03:28:52,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,337 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-20 03:28:52,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,339 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 03:28:52,339 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,341 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 188 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 188 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,345 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 [2019-11-20 03:28:52,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,346 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,346 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,347 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 03:28:52,350 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 189 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,368 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 [2019-11-20 03:28:52,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,369 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-20 03:28:52,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,371 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 03:28:52,371 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 189 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,375 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 190 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,388 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 [2019-11-20 03:28:52,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,390 INFO L203 nArgumentSynthesizer]: 8 stem disjuncts [2019-11-20 03:28:52,390 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 03:28:52,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 190 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,423 INFO L401 nArgumentSynthesizer]: We have 44 Motzkin's Theorem applications. [2019-11-20 03:28:52,423 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-11-20 03:28:52,486 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 191 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,496 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 [2019-11-20 03:28:52,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,498 INFO L203 nArgumentSynthesizer]: 2 stem disjuncts [2019-11-20 03:28:52,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,499 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2019-11-20 03:28:52,499 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 191 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,503 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 192 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,515 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 [2019-11-20 03:28:52,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,519 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,519 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 192 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,522 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 193 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,529 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 [2019-11-20 03:28:52,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,530 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,532 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,532 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 193 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,536 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 194 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,545 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 [2019-11-20 03:28:52,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,547 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,549 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,549 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 194 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,553 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 195 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,560 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 [2019-11-20 03:28:52,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 03:28:52,563 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 03:28:52,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 03:28:52,563 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 03:28:52,570 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 03:28:52,570 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 195 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,590 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 03:28:52,633 INFO L443 ModelExtractionUtils]: Simplification made 20 calls to the SMT solver. [2019-11-20 03:28:52,633 INFO L444 ModelExtractionUtils]: 4 out of 28 variables were initially zero. Simplification set additionally 20 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 196 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 03:28:52,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 196 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 03:28:52,643 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-20 03:28:52,643 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 03:28:52,643 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~i~0 + 2*ULTIMATE.start_main_~j~0 + 5 Supporting invariants [] [2019-11-20 03:28:52,966 INFO L297 tatePredicateManager]: 48 out of 50 supporting invariants were superfluous and have been removed [2019-11-20 03:28:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:53,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 03:28:53,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:53,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 03:28:53,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:28:53,201 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.7 stem predicates 2 loop predicates [2019-11-20 03:28:53,201 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 68 transitions. cyclomatic complexity: 13 Second operand 9 states. [2019-11-20 03:28:53,455 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 68 transitions. cyclomatic complexity: 13. Second operand 9 states. Result 103 states and 125 transitions. Complement of second has 14 states. [2019-11-20 03:28:53,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 7 stem states 2 non-accepting loop states 2 accepting loop states [2019-11-20 03:28:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 03:28:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 44 transitions. [2019-11-20 03:28:53,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 44 transitions. Stem has 53 letters. Loop has 2 letters. [2019-11-20 03:28:53,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:53,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 44 transitions. Stem has 55 letters. Loop has 2 letters. [2019-11-20 03:28:53,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:53,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 44 transitions. Stem has 53 letters. Loop has 4 letters. [2019-11-20 03:28:53,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 03:28:53,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 125 transitions. [2019-11-20 03:28:53,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 03:28:53,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 64 states and 72 transitions. [2019-11-20 03:28:53,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-20 03:28:53,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-20 03:28:53,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 72 transitions. [2019-11-20 03:28:53,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 03:28:53,460 INFO L688 BuchiCegarLoop]: Abstraction has 64 states and 72 transitions. [2019-11-20 03:28:53,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 72 transitions. [2019-11-20 03:28:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2019-11-20 03:28:53,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-11-20 03:28:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2019-11-20 03:28:53,461 INFO L711 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-11-20 03:28:53,462 INFO L591 BuchiCegarLoop]: Abstraction has 62 states and 70 transitions. [2019-11-20 03:28:53,462 INFO L424 BuchiCegarLoop]: ======== Iteration 25============ [2019-11-20 03:28:53,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 62 states and 70 transitions. [2019-11-20 03:28:53,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 03:28:53,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 03:28:53,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 03:28:53,463 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:28:53,463 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 03:28:53,463 INFO L794 eck$LassoCheckResult]: Stem: 7782#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7780#L-1 havoc main_#res;havoc main_#t~nondet2, main_#t~post1, main_#t~mem3, main_#t~nondet5, main_#t~post4, main_#t~mem6, main_#t~post8, main_#t~mem7, main_#t~post10, main_#t~mem9, main_#t~mem11, main_#t~mem12, main_#t~post13, main_#t~post14, main_~#string_A~0.base, main_~#string_A~0.offset, main_~#string_B~0.base, main_~#string_B~0.offset, main_~i~0, main_~j~0, main_~nc_A~0, main_~nc_B~0, main_~found~0;call main_~#string_A~0.base, main_~#string_A~0.offset := #Ultimate.allocOnStack(5);call main_~#string_B~0.base, main_~#string_B~0.offset := #Ultimate.allocOnStack(5);havoc main_~i~0;havoc main_~j~0;havoc main_~nc_A~0;havoc main_~nc_B~0;main_~found~0 := 0;main_~i~0 := 0; 7757#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7758#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7759#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7760#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7796#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7794#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7793#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7790#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7789#L19-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet2, main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);havoc main_#t~nondet2; 7786#L19-2 main_#t~post1 := main_~i~0;main_~i~0 := 1 + main_#t~post1;havoc main_#t~post1; 7785#L19-3 assume !(main_~i~0 < 5); 7755#L19-4 call main_#t~mem3 := read~int(main_~#string_A~0.base, 4 + main_~#string_A~0.offset, 1); 7756#L21 assume !!(0 == main_#t~mem3);havoc main_#t~mem3;main_~i~0 := 0; 7777#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7778#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7781#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7811#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7810#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7808#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7806#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7805#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7802#L23-3 assume !!(main_~i~0 < 5);call write~int(main_#t~nondet5, main_~#string_B~0.base, main_~#string_B~0.offset + main_~i~0, 1);havoc main_#t~nondet5; 7800#L23-2 main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4; 7799#L23-3 assume !(main_~i~0 < 5); 7775#L23-4 call main_#t~mem6 := read~int(main_~#string_B~0.base, 4 + main_~#string_B~0.offset, 1); 7776#L25 assume !!(0 == main_#t~mem6);havoc main_#t~mem6;main_~nc_A~0 := 0; 7783#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7763#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7764#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7784#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7816#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7815#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7814#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7813#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7812#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7788#L28-1 assume !!(0 != main_#t~mem7);havoc main_#t~mem7;main_#t~post8 := main_~nc_A~0;main_~nc_A~0 := 1 + main_#t~post8;havoc main_#t~post8; 7787#L28-3 call main_#t~mem7 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~nc_A~0, 1); 7761#L28-1 assume !(0 != main_#t~mem7);havoc main_#t~mem7; 7762#L28-4 main_~nc_B~0 := 0; 7771#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7772#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7773#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7774#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7798#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7797#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7795#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7792#L32-1 assume !!(0 != main_#t~mem9);havoc main_#t~mem9;main_#t~post10 := main_~nc_B~0;main_~nc_B~0 := 1 + main_#t~post10;havoc main_#t~post10; 7791#L32-3 call main_#t~mem9 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~nc_B~0, 1); 7779#L32-1 assume !(0 != main_#t~mem9);havoc main_#t~mem9; 7765#L32-4 assume !!(main_~nc_B~0 >= main_~nc_A~0);main_~j~0 := 0;main_~i~0 := main_~j~0; 7766#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7768#L41 assume main_#t~mem11 == main_#t~mem12;havoc main_#t~mem12;havoc main_#t~mem11;main_#t~post13 := main_~i~0;main_~i~0 := 1 + main_#t~post13;havoc main_#t~post13;main_#t~post14 := main_~j~0;main_~j~0 := 1 + main_#t~post14;havoc main_#t~post14; 7770#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7769#L41 [2019-11-20 03:28:53,465 INFO L796 eck$LassoCheckResult]: Loop: 7769#L41 assume !(main_#t~mem11 == main_#t~mem12);havoc main_#t~mem12;havoc main_#t~mem11;main_~i~0 := 1 + (main_~i~0 - main_~j~0);main_~j~0 := 0; 7767#L41-2 assume !!(main_~i~0 < main_~nc_A~0 && main_~j~0 < main_~nc_B~0);call main_#t~mem11 := read~int(main_~#string_A~0.base, main_~#string_A~0.offset + main_~i~0, 1);call main_#t~mem12 := read~int(main_~#string_B~0.base, main_~#string_B~0.offset + main_~j~0, 1); 7769#L41 [2019-11-20 03:28:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash 496764641, now seen corresponding path program 4 times [2019-11-20 03:28:53,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:53,466 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412804413] [2019-11-20 03:28:53,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:28:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 42 proven. 17 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-20 03:28:53,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412804413] [2019-11-20 03:28:53,761 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229425469] [2019-11-20 03:28:53,761 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3f116703-6fa5-4a29-8f38-2645aa1a2397/bin/uautomizer/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 03:28:53,828 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 03:28:53,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 03:28:53,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 03:28:53,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:28:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-20 03:28:54,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 03:28:54,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2019-11-20 03:28:54,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023677598] [2019-11-20 03:28:54,094 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 03:28:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:28:54,095 INFO L82 PathProgramCache]: Analyzing trace with hash 3708, now seen corresponding path program 4 times [2019-11-20 03:28:54,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 03:28:54,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634144411] [2019-11-20 03:28:54,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 03:28:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:28:54,106 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 03:28:54,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 03:28:54,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-20 03:28:54,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2019-11-20 03:28:54,173 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. cyclomatic complexity: 13 Second operand 27 states. [2019-11-20 03:28:54,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:28:54,714 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2019-11-20 03:28:54,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-20 03:28:54,714 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 58 transitions. [2019-11-20 03:28:54,715 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:28:54,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 0 states and 0 transitions. [2019-11-20 03:28:54,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 03:28:54,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 03:28:54,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 03:28:54,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 03:28:54,716 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:28:54,716 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:28:54,716 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 03:28:54,716 INFO L424 BuchiCegarLoop]: ======== Iteration 26============ [2019-11-20 03:28:54,716 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 03:28:54,716 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 03:28:54,716 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 03:28:54,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 03:28:54 BoogieIcfgContainer [2019-11-20 03:28:54,722 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 03:28:54,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:28:54,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:28:54,722 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:28:54,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:27:40" (3/4) ... [2019-11-20 03:28:54,726 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 03:28:54,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:28:54,727 INFO L168 Benchmark]: Toolchain (without parser) took 75337.30 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 433.1 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -238.3 MB). Peak memory consumption was 194.7 MB. Max. memory is 11.5 GB. [2019-11-20 03:28:54,727 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:28:54,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:28:54,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:28:54,728 INFO L168 Benchmark]: Boogie Preprocessor took 26.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 03:28:54,728 INFO L168 Benchmark]: RCFGBuilder took 382.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-20 03:28:54,729 INFO L168 Benchmark]: BuchiAutomizer took 74592.67 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 292.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.2 MB). Peak memory consumption was 214.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:28:54,729 INFO L168 Benchmark]: Witness Printer took 3.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 03:28:54,733 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 288.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 382.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 74592.67 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 292.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -77.2 MB). Peak memory consumption was 214.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #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 25 terminating modules (15 trivial, 8 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 9 * unknown-#length-unknown[string_A] + -2 * i and consists of 5 locations. One deterministic module has affine ranking function unknown-#length-unknown[string_A] + -1 * string_A + -1 * nc_A and consists of 3 locations. One deterministic module has affine ranking function -1 * string_B + unknown-#length-unknown[string_B] + -1 * nc_B and consists of 3 locations. One deterministic module has affine ranking function -1 * j + nc_B and consists of 3 locations. One deterministic module has affine ranking function nc_A + -1 * i and consists of 3 locations. One deterministic module has affine ranking function -1 * i + nc_A and consists of 4 locations. One deterministic module has affine ranking function 2 * j + -2 * i + 3 and consists of 9 locations. One deterministic module has affine ranking function -2 * i + 2 * j + 5 and consists of 11 locations. One nondeterministic module has affine ranking function -2 * i + 5 and consists of 13 locations. One nondeterministic module has affine ranking function nc_A + -1 * i and consists of 3 locations. 15 modules have a trivial ranking function, the largest among these consists of 27 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 74.5s and 26 iterations. TraceHistogramMax:6. Analysis of lassos took 69.2s. Construction of modules took 1.7s. Büchi inclusion checks took 3.3s. Highest rank in rank-based complementation 3. Minimization of det autom 8. Minimization of nondet autom 17. Automata minimization 0.0s AutomataMinimizationTime, 24 MinimizatonAttempts, 117 StatesRemovedByMinimization, 19 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 98 states and ocurred in iteration 20. Nontrivial modules had stage [8, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 474 SDtfs, 971 SDslu, 945 SDs, 0 SdLazy, 1833 SolverSat, 361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc6 concLT0 SILN0 SILU9 SILI0 SILT0 lasso10 LassoPreprocessingBenchmarks: Lassos: inital334 mio100 ax100 hnf99 lsp96 ukn46 mio100 lsp56 div100 bol100 ite100 ukn100 eq171 hnf85 smp93 dnf502 smp86 tf100 neg95 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 128ms VariablesStem: 7 VariablesLoop: 2 DisjunctsStem: 36 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 76 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...