./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/substring-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/substring-alloca-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 29f46a81991b9bc0fef856343662e1cc264d2d45 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:48:43,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:48:43,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:48:43,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:48:43,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:48:43,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:48:43,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:48:43,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:48:43,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:48:43,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:48:43,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:48:43,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:48:43,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:48:43,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:48:43,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:48:43,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:48:43,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:48:43,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:48:43,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:48:43,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:48:43,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:48:43,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:48:43,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:48:43,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:48:43,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:48:43,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:48:43,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:48:43,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:48:43,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:48:43,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:48:43,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:48:43,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:48:43,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:48:43,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:48:43,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:48:43,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:48:43,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:48:43,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:48:43,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:48:43,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:48:43,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:48:43,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:48:43,133 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:48:43,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:48:43,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:48:43,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:48:43,134 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:48:43,134 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:48:43,135 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:48:43,135 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:48:43,135 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:48:43,135 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:48:43,135 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:48:43,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:48:43,136 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:48:43,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:48:43,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:48:43,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:48:43,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:48:43,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:48:43,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:48:43,137 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:48:43,137 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:48:43,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:48:43,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:48:43,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:48:43,138 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:48:43,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:48:43,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:48:43,138 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:48:43,139 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:48:43,139 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_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29f46a81991b9bc0fef856343662e1cc264d2d45 [2019-11-25 08:48:43,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:48:43,296 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:48:43,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:48:43,300 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:48:43,301 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:48:43,301 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/../../sv-benchmarks/c/termination-memory-alloca/substring-alloca-1.i [2019-11-25 08:48:43,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/data/532796979/fc932d0447fc4591b1f86461ddc42657/FLAG2d7aa68fc [2019-11-25 08:48:43,778 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:48:43,780 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/sv-benchmarks/c/termination-memory-alloca/substring-alloca-1.i [2019-11-25 08:48:43,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/data/532796979/fc932d0447fc4591b1f86461ddc42657/FLAG2d7aa68fc [2019-11-25 08:48:44,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/data/532796979/fc932d0447fc4591b1f86461ddc42657 [2019-11-25 08:48:44,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:48:44,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:48:44,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:44,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:48:44,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:48:44,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423789ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44, skipping insertion in model container [2019-11-25 08:48:44,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:48:44,143 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:48:44,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:44,485 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:48:44,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:48:44,597 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:48:44,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44 WrapperNode [2019-11-25 08:48:44,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:48:44,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:44,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:48:44,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:48:44,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:48:44,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:48:44,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:48:44,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:48:44,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... [2019-11-25 08:48:44,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:48:44,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:48:44,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:48:44,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:48:44,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:48:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:48:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:48:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:48:44,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:48:44,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:48:45,013 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:48:45,013 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-25 08:48:45,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:45 BoogieIcfgContainer [2019-11-25 08:48:45,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:48:45,015 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:48:45,015 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:48:45,018 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:48:45,024 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:48:45,024 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:48:44" (1/3) ... [2019-11-25 08:48:45,025 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15caa040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:48:45, skipping insertion in model container [2019-11-25 08:48:45,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:48:45,025 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:48:44" (2/3) ... [2019-11-25 08:48:45,026 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15caa040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:48:45, skipping insertion in model container [2019-11-25 08:48:45,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:48:45,026 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:45" (3/3) ... [2019-11-25 08:48:45,027 INFO L371 chiAutomizerObserver]: Analyzing ICFG substring-alloca-1.i [2019-11-25 08:48:45,067 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:48:45,067 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:48:45,067 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:48:45,068 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:48:45,068 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:48:45,068 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:48:45,068 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:48:45,068 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:48:45,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-25 08:48:45,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:48:45,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:45,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:45,107 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:48:45,107 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:48:45,107 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:48:45,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-25 08:48:45,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:48:45,109 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:45,109 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:45,109 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:48:45,109 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-25 08:48:45,115 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 11#L-1true havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~ret15, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 9#L565true assume !(main_~length1~0 < 1); 13#L565-2true assume !(main_~length2~0 < 1); 8#L568-1true call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 4#L550-3true [2019-11-25 08:48:45,115 INFO L796 eck$LassoCheckResult]: Loop: 4#L550-3true call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 19#L550-1true assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 3#L553-5true assume !true; 5#L553-6true call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 6#L557true assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 4#L550-3true [2019-11-25 08:48:45,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:45,121 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2019-11-25 08:48:45,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:45,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331620097] [2019-11-25 08:48:45,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,269 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:45,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:45,271 INFO L82 PathProgramCache]: Analyzing trace with hash 47887114, now seen corresponding path program 1 times [2019-11-25 08:48:45,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:45,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693142903] [2019-11-25 08:48:45,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:45,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693142903] [2019-11-25 08:48:45,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:45,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:48:45,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415975926] [2019-11-25 08:48:45,309 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:48:45,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:45,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:48:45,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:48:45,326 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2019-11-25 08:48:45,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:45,332 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2019-11-25 08:48:45,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:48:45,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2019-11-25 08:48:45,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:48:45,342 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 16 transitions. [2019-11-25 08:48:45,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-25 08:48:45,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:48:45,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-11-25 08:48:45,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:48:45,344 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:48:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-11-25 08:48:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-25 08:48:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:48:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-25 08:48:45,367 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:48:45,367 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:48:45,367 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:48:45,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-25 08:48:45,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:48:45,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:45,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:45,368 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:48:45,369 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:45,369 INFO L794 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 44#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~ret15, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 45#L565 assume !(main_~length1~0 < 1); 49#L565-2 assume !(main_~length2~0 < 1); 50#L568-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 51#L550-3 [2019-11-25 08:48:45,369 INFO L796 eck$LassoCheckResult]: Loop: 51#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 52#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 42#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 43#L553-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 53#L553-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 46#L553-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 47#L557 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 51#L550-3 [2019-11-25 08:48:45,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:45,369 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 2 times [2019-11-25 08:48:45,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:45,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054693087] [2019-11-25 08:48:45,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,416 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:45,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1237496093, now seen corresponding path program 1 times [2019-11-25 08:48:45,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:45,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793622279] [2019-11-25 08:48:45,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,447 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1302992386, now seen corresponding path program 1 times [2019-11-25 08:48:45,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:45,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449100640] [2019-11-25 08:48:45,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:45,540 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:45,778 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-11-25 08:48:46,208 WARN L192 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2019-11-25 08:48:46,327 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-25 08:48:46,337 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:46,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:46,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:46,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:46,338 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:48:46,339 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:46,339 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:46,339 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:46,339 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-1.i_Iteration2_Lasso [2019-11-25 08:48:46,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:46,339 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:46,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:46,801 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-11-25 08:48:46,987 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-11-25 08:48:46,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:46,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,003 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:47,467 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2019-11-25 08:48:47,673 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:47,677 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:47,690 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:47,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:47,693 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:47,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:47,693 INFO L204 nArgumentSynthesizer]: 6 loop disjuncts [2019-11-25 08:48:47,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:47,707 INFO L401 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2019-11-25 08:48:47,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:47,721 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:47,737 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:47,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:47,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:47,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:47,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:47,745 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:47,745 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:47,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:47,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:47,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:47,770 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:47,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:47,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:47,776 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:47,776 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:47,786 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:47,801 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:47,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:47,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:47,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:47,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:47,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:47,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:47,805 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 [2019-11-25 08:48:47,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:47,816 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:47,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:47,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:47,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:47,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:47,832 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:47,832 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:47,846 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:47,856 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:47,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:47,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:47,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:47,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:47,871 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:47,872 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:47,884 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:48:47,928 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-25 08:48:47,929 INFO L444 ModelExtractionUtils]: 23 out of 31 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:47,940 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:48:47,948 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:48:47,948 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:48:47,949 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_1, ULTIMATE.start_substring_~ps~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_1 - 1*ULTIMATE.start_substring_~ps~0.offset Supporting invariants [] [2019-11-25 08:48:48,050 INFO L297 tatePredicateManager]: 8 out of 9 supporting invariants were superfluous and have been removed [2019-11-25 08:48:48,057 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:48:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:48,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:48,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:48,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:48:48,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:48,166 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 [2019-11-25 08:48:48,167 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:48:48,253 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 19 states and 26 transitions. Complement of second has 4 states. [2019-11-25 08:48:48,253 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 [2019-11-25 08:48:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:48:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2019-11-25 08:48:48,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 5 letters. Loop has 7 letters. [2019-11-25 08:48:48,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:48,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 12 letters. Loop has 7 letters. [2019-11-25 08:48:48,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:48,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-25 08:48:48,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:48,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 26 transitions. [2019-11-25 08:48:48,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:48:48,260 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 24 transitions. [2019-11-25 08:48:48,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-25 08:48:48,260 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:48:48,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 24 transitions. [2019-11-25 08:48:48,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:48:48,261 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-25 08:48:48,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 24 transitions. [2019-11-25 08:48:48,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-25 08:48:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-25 08:48:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2019-11-25 08:48:48,263 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-25 08:48:48,263 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-25 08:48:48,263 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:48:48,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2019-11-25 08:48:48,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:48:48,269 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:48,269 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:48,269 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:48,269 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:48:48,270 INFO L794 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 174#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~ret15, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 175#L565 assume !(main_~length1~0 < 1); 183#L565-2 assume !(main_~length2~0 < 1); 184#L568-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 178#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 180#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 170#L553-5 [2019-11-25 08:48:48,270 INFO L796 eck$LassoCheckResult]: Loop: 170#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 171#L553-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 185#L553-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 170#L553-5 [2019-11-25 08:48:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935627, now seen corresponding path program 1 times [2019-11-25 08:48:48,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:48,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050382552] [2019-11-25 08:48:48,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:48,332 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:48,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,332 INFO L82 PathProgramCache]: Analyzing trace with hash 59685, now seen corresponding path program 1 times [2019-11-25 08:48:48,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:48,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254283410] [2019-11-25 08:48:48,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:48,345 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:48,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:48,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1594173083, now seen corresponding path program 1 times [2019-11-25 08:48:48,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:48,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186304457] [2019-11-25 08:48:48,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:48,413 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:48,541 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-11-25 08:48:49,025 WARN L192 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 100 [2019-11-25 08:48:49,249 WARN L192 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-11-25 08:48:49,251 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:49,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:49,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:49,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:49,252 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:48:49,252 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:49,252 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:49,252 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:49,252 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-1.i_Iteration3_Lasso [2019-11-25 08:48:49,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:49,253 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:49,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,732 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-11-25 08:48:49,885 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-11-25 08:48:49,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:49,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:50,452 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:50,452 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:50,460 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,463 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,472 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,474 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,475 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,476 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:50,480 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,483 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:50,484 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:50,488 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,504 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 [2019-11-25 08:48:50,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,508 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,512 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,516 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,525 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,529 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,533 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,535 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,535 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,535 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,537 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:50,543 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,546 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,546 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,549 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,569 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,572 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:50,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:50,576 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:50,602 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 [2019-11-25 08:48:50,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,605 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,605 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,606 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:50,611 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,616 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:50,620 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,623 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:50,623 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:50,626 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:50,648 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,649 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,649 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,650 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,652 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:50,658 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,662 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:50,662 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,667 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:50,687 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,689 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,689 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,690 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 [2019-11-25 08:48:50,692 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:50,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,700 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,701 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,702 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:48:50,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,710 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 [2019-11-25 08:48:50,712 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:50,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,727 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 [2019-11-25 08:48:50,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:50,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:50,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:50,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:50,738 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,745 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,748 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:50,748 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:50,752 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:50,765 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,766 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,767 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:50,767 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:50,770 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:50,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:50,775 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:50,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:50,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:50,776 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:50,791 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:50,791 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:50,805 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:48:50,852 INFO L443 ModelExtractionUtils]: Simplification made 22 calls to the SMT solver. [2019-11-25 08:48:50,852 INFO L444 ModelExtractionUtils]: 20 out of 43 variables were initially zero. Simplification set additionally 20 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:50,856 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:48:50,858 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:48:50,858 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:48:50,858 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_substring_~pt~0.base)_2, ULTIMATE.start_substring_~ps2~0.offset) = 1*v_rep(select #length ULTIMATE.start_substring_~pt~0.base)_2 - 1*ULTIMATE.start_substring_~ps2~0.offset Supporting invariants [] [2019-11-25 08:48:50,938 INFO L297 tatePredicateManager]: 22 out of 23 supporting invariants were superfluous and have been removed [2019-11-25 08:48:50,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:48:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:50,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-25 08:48:50,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:51,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:48:51,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:51,028 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-25 08:48:51,028 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-25 08:48:51,089 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 40 states and 54 transitions. Complement of second has 6 states. [2019-11-25 08:48:51,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-25 08:48:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:48:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:48:51,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2019-11-25 08:48:51,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:51,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 3 letters. [2019-11-25 08:48:51,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:51,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 6 letters. [2019-11-25 08:48:51,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:51,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 54 transitions. [2019-11-25 08:48:51,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:48:51,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 28 states and 38 transitions. [2019-11-25 08:48:51,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:48:51,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:48:51,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2019-11-25 08:48:51,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:48:51,096 INFO L688 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2019-11-25 08:48:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2019-11-25 08:48:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2019-11-25 08:48:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:48:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2019-11-25 08:48:51,098 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-11-25 08:48:51,099 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 32 transitions. [2019-11-25 08:48:51,099 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:48:51,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 32 transitions. [2019-11-25 08:48:51,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:48:51,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:51,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:51,100 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:51,101 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:48:51,101 INFO L794 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 378#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~ret15, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 379#L565 assume !(main_~length1~0 < 1); 385#L565-2 assume !(main_~length2~0 < 1); 386#L568-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 387#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 388#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 397#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 399#L553-1 assume !substring_#t~short6; 398#L553-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 392#L553-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 393#L557 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 389#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 391#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 380#L553-5 [2019-11-25 08:48:51,101 INFO L796 eck$LassoCheckResult]: Loop: 380#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 381#L553-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 394#L553-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 380#L553-5 [2019-11-25 08:48:51,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:51,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2012026433, now seen corresponding path program 1 times [2019-11-25 08:48:51,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:51,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997704535] [2019-11-25 08:48:51,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:51,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997704535] [2019-11-25 08:48:51,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:51,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:48:51,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266680546] [2019-11-25 08:48:51,181 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:48:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:51,181 INFO L82 PathProgramCache]: Analyzing trace with hash 59685, now seen corresponding path program 2 times [2019-11-25 08:48:51,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:51,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461681081] [2019-11-25 08:48:51,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,191 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:51,295 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2019-11-25 08:48:51,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:48:51,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:48:51,317 INFO L87 Difference]: Start difference. First operand 23 states and 32 transitions. cyclomatic complexity: 12 Second operand 5 states. [2019-11-25 08:48:51,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:51,353 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-25 08:48:51,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:48:51,353 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2019-11-25 08:48:51,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:48:51,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 26 states and 34 transitions. [2019-11-25 08:48:51,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:48:51,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-25 08:48:51,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2019-11-25 08:48:51,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:48:51,355 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-11-25 08:48:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2019-11-25 08:48:51,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-11-25 08:48:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-25 08:48:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2019-11-25 08:48:51,359 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2019-11-25 08:48:51,359 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 32 transitions. [2019-11-25 08:48:51,359 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:48:51,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 32 transitions. [2019-11-25 08:48:51,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:48:51,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:51,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:51,361 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:51,361 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:48:51,361 INFO L794 eck$LassoCheckResult]: Stem: 446#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 440#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~ret15, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 441#L565 assume !(main_~length1~0 < 1); 447#L565-2 assume !(main_~length2~0 < 1); 448#L568-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 449#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 450#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 459#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 461#L553-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 460#L553-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 454#L553-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 455#L557 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 451#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 453#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 442#L553-5 [2019-11-25 08:48:51,361 INFO L796 eck$LassoCheckResult]: Loop: 442#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 443#L553-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 456#L553-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 442#L553-5 [2019-11-25 08:48:51,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:51,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1954768131, now seen corresponding path program 2 times [2019-11-25 08:48:51,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:51,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340850984] [2019-11-25 08:48:51,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,394 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:51,395 INFO L82 PathProgramCache]: Analyzing trace with hash 59685, now seen corresponding path program 3 times [2019-11-25 08:48:51,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:51,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868792062] [2019-11-25 08:48:51,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,404 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:51,404 INFO L82 PathProgramCache]: Analyzing trace with hash -964145949, now seen corresponding path program 1 times [2019-11-25 08:48:51,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:51,405 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602725219] [2019-11-25 08:48:51,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:51,448 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:52,141 WARN L192 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 143 [2019-11-25 08:48:52,321 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2019-11-25 08:48:52,332 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:48:52,333 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:48:52,333 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:48:52,333 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:48:52,333 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:48:52,333 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:52,333 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:48:52,333 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:48:52,333 INFO L133 ssoRankerPreferences]: Filename of dumped script: substring-alloca-1.i_Iteration5_Lasso [2019-11-25 08:48:52,333 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:48:52,333 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:48:52,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:52,884 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2019-11-25 08:48:53,096 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-11-25 08:48:53,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:48:53,418 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-11-25 08:48:53,935 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-11-25 08:48:54,080 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:48:54,080 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,085 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,088 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,088 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,096 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,100 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:54,108 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 Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,110 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,110 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,110 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,110 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,112 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,124 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:54,128 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,132 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,136 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,137 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,138 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,144 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,144 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,145 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,145 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,147 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,152 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,153 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,161 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,163 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,163 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,168 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) [2019-11-25 08:48:54,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,182 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,182 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,183 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,183 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,184 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,189 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,189 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,191 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,191 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,193 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,199 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:48:54,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:48:54,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:48:54,202 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,206 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,211 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,211 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,215 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,220 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,223 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,233 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,233 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,252 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,263 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,266 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,267 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,271 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,276 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,279 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,279 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,282 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,286 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,287 INFO L203 nArgumentSynthesizer]: 12 stem disjuncts [2019-11-25 08:48:54,287 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:48:54,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,311 INFO L401 nArgumentSynthesizer]: We have 60 Motzkin's Theorem applications. [2019-11-25 08:48:54,311 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2019-11-25 08:48:54,347 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:48:54,352 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,354 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,355 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,357 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,361 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,364 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,364 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,366 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,370 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:48:54,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:48:54,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:48:54,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:48:54,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:48:54,383 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:48:54,384 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:48:54,406 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:48:54,482 INFO L443 ModelExtractionUtils]: Simplification made 23 calls to the SMT solver. [2019-11-25 08:48:54,482 INFO L444 ModelExtractionUtils]: 26 out of 58 variables were initially zero. Simplification set additionally 29 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b9f212f-6558-4437-bd61-fe05bd5ff497/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 [2019-11-25 08:48:54,487 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:48:54,488 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-25 08:48:54,489 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:48:54,489 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_substring_~ps2~0.offset, v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_2) = -1*ULTIMATE.start_substring_~ps2~0.offset + 1*v_rep(select #length ULTIMATE.start_main_~nondetString1~0.base)_2 Supporting invariants [] [2019-11-25 08:48:54,634 INFO L297 tatePredicateManager]: 43 out of 45 supporting invariants were superfluous and have been removed [2019-11-25 08:48:54,638 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-25 08:48:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:54,716 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-25 08:48:54,716 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-25 08:48:54,764 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 42 states and 54 transitions. Complement of second has 8 states. [2019-11-25 08:48:54,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:48:54,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:48:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-25 08:48:54,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-25 08:48:54,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:54,766 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:48:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:54,838 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-25 08:48:54,838 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-25 08:48:54,882 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 42 states and 54 transitions. Complement of second has 8 states. [2019-11-25 08:48:54,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:48:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:48:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-25 08:48:54,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-25 08:48:54,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:54,885 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:48:54,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:54,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:48:54,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:48:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:54,960 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-25 08:48:54,960 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-25 08:48:55,004 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 32 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 50 states and 66 transitions. Complement of second has 7 states. [2019-11-25 08:48:55,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:48:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:48:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2019-11-25 08:48:55,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 14 letters. Loop has 3 letters. [2019-11-25 08:48:55,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-25 08:48:55,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-25 08:48:55,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:48:55,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 66 transitions. [2019-11-25 08:48:55,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:48:55,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 54 transitions. [2019-11-25 08:48:55,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-25 08:48:55,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-25 08:48:55,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 54 transitions. [2019-11-25 08:48:55,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:48:55,011 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2019-11-25 08:48:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 54 transitions. [2019-11-25 08:48:55,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-11-25 08:48:55,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-25 08:48:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2019-11-25 08:48:55,014 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 52 transitions. [2019-11-25 08:48:55,014 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 52 transitions. [2019-11-25 08:48:55,014 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:48:55,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 52 transitions. [2019-11-25 08:48:55,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-25 08:48:55,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:48:55,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:48:55,015 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:48:55,016 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-25 08:48:55,016 INFO L794 eck$LassoCheckResult]: Stem: 1003#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 994#L-1 havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~malloc14.base, main_#t~malloc14.offset, main_#t~ret15, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet11;havoc main_#t~nondet11;main_~length2~0 := main_#t~nondet12;havoc main_#t~nondet12; 995#L565 assume !(main_~length1~0 < 1); 1004#L565-2 assume !(main_~length2~0 < 1); 1005#L568-1 call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call main_#t~malloc14.base, main_#t~malloc14.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc14.base, main_#t~malloc14.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length2~0 - 1), 1);substring_#in~s.base, substring_#in~s.offset, substring_#in~t.base, substring_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc substring_#res;havoc substring_#t~post7.base, substring_#t~post7.offset, substring_#t~post8.base, substring_#t~post8.offset, substring_#t~mem3, substring_#t~mem4, substring_#t~mem5, substring_#t~short6, substring_#t~mem9, substring_#t~post10.base, substring_#t~post10.offset, substring_~ps2~0.base, substring_~ps2~0.offset, substring_~pt~0.base, substring_~pt~0.offset, substring_#t~mem2, substring_~s.base, substring_~s.offset, substring_~t.base, substring_~t.offset, substring_~ps~0.base, substring_~ps~0.offset;substring_~s.base, substring_~s.offset := substring_#in~s.base, substring_#in~s.offset;substring_~t.base, substring_~t.offset := substring_#in~t.base, substring_#in~t.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_~s.base, substring_~s.offset; 998#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 999#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1024#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 1014#L553-1 assume substring_#t~short6;call substring_#t~mem4 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);call substring_#t~mem5 := read~int(substring_~ps2~0.base, substring_~ps2~0.offset, 1);substring_#t~short6 := substring_#t~mem4 == substring_#t~mem5; 1013#L553-3 assume !substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4; 996#L553-6 call substring_#t~mem9 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1); 997#L557 assume !(0 == substring_#t~mem9);havoc substring_#t~mem9;substring_#t~post10.base, substring_#t~post10.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~ps~0.base, substring_~ps~0.offset := substring_#t~post10.base, 1 + substring_#t~post10.offset;havoc substring_#t~post10.base, substring_#t~post10.offset; 1000#L550-3 call substring_#t~mem2 := read~int(substring_~ps~0.base, substring_~ps~0.offset, 1); 1002#L550-1 assume !!(0 != substring_#t~mem2);havoc substring_#t~mem2;substring_~ps2~0.base, substring_~ps2~0.offset := substring_~ps~0.base, substring_~ps~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_~t.base, substring_~t.offset; 1011#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 991#L553-1 [2019-11-25 08:48:55,016 INFO L796 eck$LassoCheckResult]: Loop: 991#L553-1 assume !substring_#t~short6; 1006#L553-3 assume !!substring_#t~short6;havoc substring_#t~mem3;havoc substring_#t~mem5;havoc substring_#t~short6;havoc substring_#t~mem4;substring_#t~post7.base, substring_#t~post7.offset := substring_~pt~0.base, substring_~pt~0.offset;substring_~pt~0.base, substring_~pt~0.offset := substring_#t~post7.base, 1 + substring_#t~post7.offset;havoc substring_#t~post7.base, substring_#t~post7.offset;substring_#t~post8.base, substring_#t~post8.offset := substring_~ps2~0.base, substring_~ps2~0.offset;substring_~ps2~0.base, substring_~ps2~0.offset := substring_#t~post8.base, 1 + substring_#t~post8.offset;havoc substring_#t~post8.base, substring_#t~post8.offset; 990#L553-5 call substring_#t~mem3 := read~int(substring_~pt~0.base, substring_~pt~0.offset, 1);substring_#t~short6 := 0 != substring_#t~mem3; 991#L553-1 [2019-11-25 08:48:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,016 INFO L82 PathProgramCache]: Analyzing trace with hash 468269947, now seen corresponding path program 3 times [2019-11-25 08:48:55,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888655840] [2019-11-25 08:48:55,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:48:55,048 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:48:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:48:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash 64727, now seen corresponding path program 1 times [2019-11-25 08:48:55,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:48:55,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336878051] [2019-11-25 08:48:55,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:48:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:48:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:48:55,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336878051] [2019-11-25 08:48:55,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:48:55,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:48:55,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786011873] [2019-11-25 08:48:55,061 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:48:55,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:48:55,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:48:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:48:55,062 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. cyclomatic complexity: 18 Second operand 3 states. [2019-11-25 08:48:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:48:55,073 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-25 08:48:55,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:48:55,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 39 transitions. [2019-11-25 08:48:55,075 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:48:55,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2019-11-25 08:48:55,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:48:55,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:48:55,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:48:55,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:48:55,076 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:55,076 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:55,076 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:48:55,076 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:48:55,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:48:55,076 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:48:55,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:48:55,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:48:55 BoogieIcfgContainer [2019-11-25 08:48:55,081 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:48:55,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:48:55,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:48:55,081 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:48:55,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:48:45" (3/4) ... [2019-11-25 08:48:55,084 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:48:55,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:48:55,085 INFO L168 Benchmark]: Toolchain (without parser) took 11011.71 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 230.2 MB). Free memory was 939.3 MB in the beginning and 915.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 253.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,085 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:55,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,086 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.92 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. [2019-11-25 08:48:55,087 INFO L168 Benchmark]: Boogie Preprocessor took 26.53 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. [2019-11-25 08:48:55,087 INFO L168 Benchmark]: RCFGBuilder took 346.83 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,088 INFO L168 Benchmark]: BuchiAutomizer took 10065.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 99.6 MB). Free memory was 1.1 GB in the beginning and 915.6 MB in the end (delta: 169.7 MB). Peak memory consumption was 269.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:48:55,088 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 1.3 GB. Free memory is still 915.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:48:55,090 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 519.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.92 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 26.53 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 346.83 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 10065.86 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 99.6 MB). Free memory was 1.1 GB in the beginning and 915.6 MB in the end (delta: 169.7 MB). Peak memory consumption was 269.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.93 ms. Allocated memory is still 1.3 GB. Free memory is still 915.6 MB. 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 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * ps and consists of 3 locations. One deterministic module has affine ranking function unknown-#length-unknown[pt] + -1 * ps2 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * ps2 + unknown-#length-unknown[nondetString1] and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.0s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 9.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 39 states and ocurred in iteration 5. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 107 SDtfs, 102 SDslu, 63 SDs, 0 SdLazy, 105 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU1 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital251 mio100 ax107 hnf99 lsp89 ukn85 mio100 lsp39 div100 bol100 ite100 ukn100 eq193 hnf88 smp94 dnf180 smp75 tf100 neg92 sie118 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 63ms VariablesStem: 5 VariablesLoop: 2 DisjunctsStem: 12 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 60 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...