./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/subseq-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/subseq-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20f541ceeb4d88c1ded29d751212bcde5b7dc0f0 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:11:10,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:11:10,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:11:10,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:11:10,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:11:10,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:11:10,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:11:10,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:11:10,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:11:10,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:11:10,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:11:10,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:11:10,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:11:10,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:11:10,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:11:10,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:11:10,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:11:10,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:11:10,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:11:10,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:11:10,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:11:10,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:11:10,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:11:10,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:11:10,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:11:10,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:11:10,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:11:10,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:11:10,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:11:10,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:11:10,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:11:10,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:11:10,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:11:10,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:11:10,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:11:10,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:11:10,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:11:10,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:11:10,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:11:10,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:11:10,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:11:10,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-19 23:11:10,451 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:11:10,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:11:10,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:11:10,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:11:10,453 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:11:10,454 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 23:11:10,454 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 23:11:10,454 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 23:11:10,455 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 23:11:10,455 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 23:11:10,456 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 23:11:10,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:11:10,456 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 23:11:10,456 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:11:10,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:11:10,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 23:11:10,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:11:10,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 23:11:10,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 23:11:10,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 23:11:10,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 23:11:10,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:11:10,458 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 23:11:10,458 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:11:10,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 23:11:10,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:11:10,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:11:10,459 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 23:11:10,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:11:10,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:11:10,459 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 23:11:10,460 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 23:11:10,461 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_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20f541ceeb4d88c1ded29d751212bcde5b7dc0f0 [2019-11-19 23:11:10,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:11:10,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:11:10,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:11:10,606 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:11:10,606 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:11:10,607 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/subseq-alloca-2.i [2019-11-19 23:11:10,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/data/bcfdd7a3c/a8a5192c1e844a59884faa813897301d/FLAGcae7948e8 [2019-11-19 23:11:11,128 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:11:11,128 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/sv-benchmarks/c/array-memsafety/subseq-alloca-2.i [2019-11-19 23:11:11,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/data/bcfdd7a3c/a8a5192c1e844a59884faa813897301d/FLAGcae7948e8 [2019-11-19 23:11:11,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/data/bcfdd7a3c/a8a5192c1e844a59884faa813897301d [2019-11-19 23:11:11,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:11:11,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:11:11,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:11:11,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:11:11,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:11:11,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5817f44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11, skipping insertion in model container [2019-11-19 23:11:11,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,460 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:11:11,493 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:11:11,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:11:11,846 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:11:11,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:11:11,929 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:11:11,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11 WrapperNode [2019-11-19 23:11:11,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:11:11,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:11:11,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:11:11,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:11:11,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:11:11,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:11:11,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:11:11,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:11:11,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:11,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:12,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:12,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... [2019-11-19 23:11:12,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:11:12,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:11:12,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:11:12,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:11:12,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-19 23:11:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-19 23:11:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 23:11:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 23:11:12,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:11:12,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:11:12,417 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:11:12,418 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-19 23:11:12,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:12 BoogieIcfgContainer [2019-11-19 23:11:12,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:11:12,419 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 23:11:12,420 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 23:11:12,422 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 23:11:12,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:11:12,424 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 11:11:11" (1/3) ... [2019-11-19 23:11:12,425 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aa16da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:11:12, skipping insertion in model container [2019-11-19 23:11:12,425 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:11:12,425 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:11:11" (2/3) ... [2019-11-19 23:11:12,425 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@aa16da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:11:12, skipping insertion in model container [2019-11-19 23:11:12,425 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:11:12,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:12" (3/3) ... [2019-11-19 23:11:12,427 INFO L371 chiAutomizerObserver]: Analyzing ICFG subseq-alloca-2.i [2019-11-19 23:11:12,467 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 23:11:12,467 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 23:11:12,467 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 23:11:12,467 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:11:12,468 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:11:12,468 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 23:11:12,468 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:11:12,468 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 23:11:12,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-11-19 23:11:12,500 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 23:11:12,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:11:12,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:11:12,506 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-19 23:11:12,507 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 23:11:12,507 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 23:11:12,507 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states. [2019-11-19 23:11:12,509 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 23:11:12,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:11:12,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:11:12,510 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-19 23:11:12,510 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 23:11:12,517 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 18#L530true assume !(main_~length1~0 < 1); 21#L530-2true assume !(main_~length2~0 < 1); 13#L533-1true call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 5#L539-3true [2019-11-19 23:11:12,517 INFO L796 eck$LassoCheckResult]: Loop: 5#L539-3true assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 3#L539-2true main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 5#L539-3true [2019-11-19 23:11:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:12,522 INFO L82 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2019-11-19 23:11:12,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:12,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104339212] [2019-11-19 23:11:12,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:12,635 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:12,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2019-11-19 23:11:12,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:12,636 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391851871] [2019-11-19 23:11:12,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:12,653 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2019-11-19 23:11:12,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:12,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957483097] [2019-11-19 23:11:12,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:12,696 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:13,046 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-11-19 23:11:13,153 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:11:13,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:11:13,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:11:13,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:11:13,154 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:11:13,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:13,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:11:13,154 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:11:13,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: subseq-alloca-2.i_Iteration1_Lasso [2019-11-19 23:11:13,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:11:13,155 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:11:13,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:13,720 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:11:13,725 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:11:13,744 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:13,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:13,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:13,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:13,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:13,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:13,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:13,750 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:13,753 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:11:13,770 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:13,771 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:13,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:13,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:13,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:13,781 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:13,781 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:13,786 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:13,805 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:13,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:13,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:13,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:13,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:13,812 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:13,812 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 [2019-11-19 23:11:13,818 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:13,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:13,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:13,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:13,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:13,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:13,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:13,837 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:13,837 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 [2019-11-19 23:11:13,840 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:13,854 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:13,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:13,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:13,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:13,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:13,867 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:13,867 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:13,880 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:11:13,926 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2019-11-19 23:11:13,926 INFO L444 ModelExtractionUtils]: 6 out of 22 variables were initially zero. Simplification set additionally 12 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:13,932 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:13,936 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-19 23:11:13,936 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:11:13,937 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_1, ULTIMATE.start_main_~nondetString1~0.offset, ULTIMATE.start_main_~i~0) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc12.base)_1 - 1*ULTIMATE.start_main_~nondetString1~0.offset - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-19 23:11:14,045 INFO L297 tatePredicateManager]: 5 out of 6 supporting invariants were superfluous and have been removed [2019-11-19 23:11:14,055 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-19 23:11:14,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:14,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:11:14,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:11:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:14,119 WARN L253 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:11:14,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:11:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:11:14,152 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 [2019-11-19 23:11:14,154 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states. Second operand 3 states. [2019-11-19 23:11:14,260 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states.. Second operand 3 states. Result 51 states and 76 transitions. Complement of second has 8 states. [2019-11-19 23:11:14,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 23:11:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:11:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2019-11-19 23:11:14,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 50 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-19 23:11:14,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:14,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 50 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-19 23:11:14,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:14,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 50 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-19 23:11:14,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:14,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 76 transitions. [2019-11-19 23:11:14,270 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-19 23:11:14,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 17 states and 24 transitions. [2019-11-19 23:11:14,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2019-11-19 23:11:14,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-19 23:11:14,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 24 transitions. [2019-11-19 23:11:14,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:11:14,275 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-19 23:11:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 24 transitions. [2019-11-19 23:11:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-19 23:11:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 23:11:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2019-11-19 23:11:14,297 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-19 23:11:14,297 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2019-11-19 23:11:14,297 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 23:11:14,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2019-11-19 23:11:14,298 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2019-11-19 23:11:14,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:11:14,299 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:11:14,301 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:11:14,301 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-19 23:11:14,302 INFO L794 eck$LassoCheckResult]: Stem: 165#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 161#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, main_~length1~0, main_~length2~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 162#L530 assume !(main_~length1~0 < 1); 166#L530-2 assume !(main_~length2~0 < 1); 163#L533-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 155#L539-3 assume !(main_~i~0 < main_~length1~0 - 1); 156#L539-4 main_~i~1 := 0; 157#L545-3 [2019-11-19 23:11:14,302 INFO L796 eck$LassoCheckResult]: Loop: 157#L545-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 160#L545-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 157#L545-3 [2019-11-19 23:11:14,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:14,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935662, now seen corresponding path program 1 times [2019-11-19 23:11:14,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:14,303 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149310478] [2019-11-19 23:11:14,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:14,354 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:14,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2147, now seen corresponding path program 1 times [2019-11-19 23:11:14,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:14,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212041861] [2019-11-19 23:11:14,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:14,368 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:14,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384784, now seen corresponding path program 1 times [2019-11-19 23:11:14,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:14,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747488253] [2019-11-19 23:11:14,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:14,423 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:14,622 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-11-19 23:11:14,709 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:11:14,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:11:14,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:11:14,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:11:14,709 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:11:14,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:14,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:11:14,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:11:14,710 INFO L133 ssoRankerPreferences]: Filename of dumped script: subseq-alloca-2.i_Iteration2_Lasso [2019-11-19 23:11:14,710 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:11:14,710 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:11:14,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,891 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-11-19 23:11:14,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:14,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:15,275 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:11:15,275 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:11:15,294 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:15,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,296 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:15,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:15,300 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:15,315 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:15,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,317 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:15,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:15,319 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:15,346 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:15,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:15,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:15,351 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:15,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,372 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:15,372 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:15,376 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:15,385 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:15,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:15,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:15,393 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:15,402 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:15,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,408 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:15,408 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:15,412 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:15,426 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:15,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:15,437 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:15,441 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,443 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,443 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:15,443 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,443 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:15,444 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:15,445 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:15,449 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,454 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:15,455 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:15,461 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:15,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:15,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:15,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:15,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:15,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:15,495 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:15,495 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:15,509 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:11:15,538 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2019-11-19 23:11:15,538 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:15,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:15,549 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-19 23:11:15,549 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:11:15,550 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~1, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_main_~i~1 + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [] [2019-11-19 23:11:15,565 INFO L297 tatePredicateManager]: 6 out of 6 supporting invariants were superfluous and have been removed [2019-11-19 23:11:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:15,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:11:15,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:11:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:15,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:11:15,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:11:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:11:15,617 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 [2019-11-19 23:11:15,617 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-11-19 23:11:15,634 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 25 states and 38 transitions. Complement of second has 6 states. [2019-11-19 23:11:15,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 23:11:15,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:11:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2019-11-19 23:11:15,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-19 23:11:15,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:15,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-19 23:11:15,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:15,636 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 7 letters. Loop has 4 letters. [2019-11-19 23:11:15,636 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:15,636 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 38 transitions. [2019-11-19 23:11:15,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 23:11:15,638 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2019-11-19 23:11:15,638 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-19 23:11:15,638 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-19 23:11:15,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2019-11-19 23:11:15,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:11:15,639 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-19 23:11:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2019-11-19 23:11:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-19 23:11:15,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-19 23:11:15,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2019-11-19 23:11:15,641 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-19 23:11:15,641 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-19 23:11:15,641 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 23:11:15,641 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2019-11-19 23:11:15,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 23:11:15,642 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:11:15,642 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:11:15,643 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:11:15,643 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-19 23:11:15,643 INFO L794 eck$LassoCheckResult]: Stem: 282#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 278#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, 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~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 279#L530 assume !(main_~length1~0 < 1); 283#L530-2 assume !(main_~length2~0 < 1); 280#L533-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 271#L539-3 assume !(main_~i~0 < main_~length1~0 - 1); 272#L539-4 main_~i~1 := 0; 273#L545-3 assume !(main_~i~1 < main_~length2~0 - 1); 281#L545-4 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);subseq_#in~s.base, subseq_#in~s.offset, subseq_#in~t.base, subseq_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc subseq_#res;havoc subseq_#t~mem5, subseq_#t~mem6, subseq_#t~post7.base, subseq_#t~post7.offset, subseq_#t~post8.base, subseq_#t~post8.offset, subseq_#t~mem2, subseq_#t~mem3, subseq_#t~short4, subseq_#t~mem9, subseq_~s.base, subseq_~s.offset, subseq_~t.base, subseq_~t.offset, subseq_~ps~0.base, subseq_~ps~0.offset, subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~s.base, subseq_~s.offset := subseq_#in~s.base, subseq_#in~s.offset;subseq_~t.base, subseq_~t.offset := subseq_#in~t.base, subseq_#in~t.offset;subseq_~ps~0.base, subseq_~ps~0.offset := subseq_~s.base, subseq_~s.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_~t.base, subseq_~t.offset; 274#L518-5 [2019-11-19 23:11:15,643 INFO L796 eck$LassoCheckResult]: Loop: 274#L518-5 call subseq_#t~mem2 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem2; 275#L518-1 assume subseq_#t~short4;call subseq_#t~mem3 := read~int(subseq_~pt~0.base, subseq_~pt~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem3; 269#L518-3 assume !!subseq_#t~short4;havoc subseq_#t~mem2;havoc subseq_#t~short4;havoc subseq_#t~mem3;call subseq_#t~mem5 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);call subseq_#t~mem6 := read~int(subseq_~pt~0.base, subseq_~pt~0.offset, 1); 270#L519 assume !(subseq_#t~mem5 == subseq_#t~mem6);havoc subseq_#t~mem5;havoc subseq_#t~mem6; 284#L519-2 subseq_#t~post8.base, subseq_#t~post8.offset := subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_#t~post8.base, 1 + subseq_#t~post8.offset;havoc subseq_#t~post8.base, subseq_#t~post8.offset; 274#L518-5 [2019-11-19 23:11:15,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:15,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1298384726, now seen corresponding path program 1 times [2019-11-19 23:11:15,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:15,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283649672] [2019-11-19 23:11:15,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:15,679 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash 74536249, now seen corresponding path program 1 times [2019-11-19 23:11:15,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:15,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423420148] [2019-11-19 23:11:15,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:15,693 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:15,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1034036476, now seen corresponding path program 1 times [2019-11-19 23:11:15,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:15,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233870511] [2019-11-19 23:11:15,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:11:16,025 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233870511] [2019-11-19 23:11:16,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:11:16,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-19 23:11:16,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402398640] [2019-11-19 23:11:16,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:11:16,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 23:11:16,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-19 23:11:16,167 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. cyclomatic complexity: 11 Second operand 9 states. [2019-11-19 23:11:16,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:11:16,529 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2019-11-19 23:11:16,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-19 23:11:16,530 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 50 transitions. [2019-11-19 23:11:16,531 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2019-11-19 23:11:16,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 37 states and 50 transitions. [2019-11-19 23:11:16,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-11-19 23:11:16,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-19 23:11:16,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 50 transitions. [2019-11-19 23:11:16,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:11:16,533 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 50 transitions. [2019-11-19 23:11:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 50 transitions. [2019-11-19 23:11:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2019-11-19 23:11:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-19 23:11:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 38 transitions. [2019-11-19 23:11:16,536 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2019-11-19 23:11:16,536 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2019-11-19 23:11:16,537 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 23:11:16,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 38 transitions. [2019-11-19 23:11:16,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-19 23:11:16,538 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:11:16,538 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:11:16,538 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:11:16,538 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-19 23:11:16,539 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 366#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, 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~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 367#L530 assume !(main_~length1~0 < 1); 374#L530-2 assume !(main_~length2~0 < 1); 368#L533-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 358#L539-3 assume !(main_~i~0 < main_~length1~0 - 1); 359#L539-4 main_~i~1 := 0; 361#L545-3 assume !(main_~i~1 < main_~length2~0 - 1); 369#L545-4 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);subseq_#in~s.base, subseq_#in~s.offset, subseq_#in~t.base, subseq_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc subseq_#res;havoc subseq_#t~mem5, subseq_#t~mem6, subseq_#t~post7.base, subseq_#t~post7.offset, subseq_#t~post8.base, subseq_#t~post8.offset, subseq_#t~mem2, subseq_#t~mem3, subseq_#t~short4, subseq_#t~mem9, subseq_~s.base, subseq_~s.offset, subseq_~t.base, subseq_~t.offset, subseq_~ps~0.base, subseq_~ps~0.offset, subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~s.base, subseq_~s.offset := subseq_#in~s.base, subseq_#in~s.offset;subseq_~t.base, subseq_~t.offset := subseq_#in~t.base, subseq_#in~t.offset;subseq_~ps~0.base, subseq_~ps~0.offset := subseq_~s.base, subseq_~s.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_~t.base, subseq_~t.offset; 379#L518-5 call subseq_#t~mem2 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem2; 376#L518-1 assume !subseq_#t~short4; 356#L518-3 [2019-11-19 23:11:16,539 INFO L796 eck$LassoCheckResult]: Loop: 356#L518-3 assume !!subseq_#t~short4;havoc subseq_#t~mem2;havoc subseq_#t~short4;havoc subseq_#t~mem3;call subseq_#t~mem5 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);call subseq_#t~mem6 := read~int(subseq_~pt~0.base, subseq_~pt~0.offset, 1); 357#L519 assume subseq_#t~mem5 == subseq_#t~mem6;havoc subseq_#t~mem5;havoc subseq_#t~mem6;subseq_#t~post7.base, subseq_#t~post7.offset := subseq_~ps~0.base, subseq_~ps~0.offset;subseq_~ps~0.base, subseq_~ps~0.offset := subseq_#t~post7.base, 1 + subseq_#t~post7.offset;havoc subseq_#t~post7.base, subseq_#t~post7.offset; 375#L519-2 subseq_#t~post8.base, subseq_#t~post8.offset := subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_#t~post8.base, 1 + subseq_#t~post8.offset;havoc subseq_#t~post8.base, subseq_#t~post8.offset; 362#L518-5 call subseq_#t~mem2 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem2; 363#L518-1 assume !subseq_#t~short4; 356#L518-3 [2019-11-19 23:11:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash -2087759909, now seen corresponding path program 1 times [2019-11-19 23:11:16,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:16,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773692921] [2019-11-19 23:11:16,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,570 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:16,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:16,570 INFO L82 PathProgramCache]: Analyzing trace with hash 85028899, now seen corresponding path program 1 times [2019-11-19 23:11:16,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:16,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875928649] [2019-11-19 23:11:16,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,581 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:16,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1514407799, now seen corresponding path program 1 times [2019-11-19 23:11:16,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:16,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623274473] [2019-11-19 23:11:16,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:11:16,602 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623274473] [2019-11-19 23:11:16,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:11:16,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 23:11:16,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000652972] [2019-11-19 23:11:16,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:11:16,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:11:16,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:11:16,722 INFO L87 Difference]: Start difference. First operand 27 states and 38 transitions. cyclomatic complexity: 15 Second operand 3 states. [2019-11-19 23:11:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:11:16,737 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2019-11-19 23:11:16,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:11:16,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2019-11-19 23:11:16,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 23:11:16,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 27 states and 36 transitions. [2019-11-19 23:11:16,740 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2019-11-19 23:11:16,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-19 23:11:16,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2019-11-19 23:11:16,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:11:16,741 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-11-19 23:11:16,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2019-11-19 23:11:16,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-19 23:11:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-19 23:11:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2019-11-19 23:11:16,743 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-11-19 23:11:16,743 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-11-19 23:11:16,744 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 23:11:16,744 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 36 transitions. [2019-11-19 23:11:16,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 23:11:16,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:11:16,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:11:16,745 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:11:16,745 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-19 23:11:16,745 INFO L794 eck$LassoCheckResult]: Stem: 434#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 429#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, 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~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 430#L530 assume !(main_~length1~0 < 1); 436#L530-2 assume !(main_~length2~0 < 1); 431#L533-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 421#L539-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 417#L539-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 418#L539-3 assume !(main_~i~0 < main_~length1~0 - 1); 423#L539-4 main_~i~1 := 0; 424#L545-3 assume !(main_~i~1 < main_~length2~0 - 1); 435#L545-4 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);subseq_#in~s.base, subseq_#in~s.offset, subseq_#in~t.base, subseq_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc subseq_#res;havoc subseq_#t~mem5, subseq_#t~mem6, subseq_#t~post7.base, subseq_#t~post7.offset, subseq_#t~post8.base, subseq_#t~post8.offset, subseq_#t~mem2, subseq_#t~mem3, subseq_#t~short4, subseq_#t~mem9, subseq_~s.base, subseq_~s.offset, subseq_~t.base, subseq_~t.offset, subseq_~ps~0.base, subseq_~ps~0.offset, subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~s.base, subseq_~s.offset := subseq_#in~s.base, subseq_#in~s.offset;subseq_~t.base, subseq_~t.offset := subseq_#in~t.base, subseq_#in~t.offset;subseq_~ps~0.base, subseq_~ps~0.offset := subseq_~s.base, subseq_~s.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_~t.base, subseq_~t.offset; 425#L518-5 [2019-11-19 23:11:16,746 INFO L796 eck$LassoCheckResult]: Loop: 425#L518-5 call subseq_#t~mem2 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem2; 426#L518-1 assume subseq_#t~short4;call subseq_#t~mem3 := read~int(subseq_~pt~0.base, subseq_~pt~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem3; 419#L518-3 assume !!subseq_#t~short4;havoc subseq_#t~mem2;havoc subseq_#t~short4;havoc subseq_#t~mem3;call subseq_#t~mem5 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);call subseq_#t~mem6 := read~int(subseq_~pt~0.base, subseq_~pt~0.offset, 1); 420#L519 assume !(subseq_#t~mem5 == subseq_#t~mem6);havoc subseq_#t~mem5;havoc subseq_#t~mem6; 438#L519-2 subseq_#t~post8.base, subseq_#t~post8.offset := subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_#t~post8.base, 1 + subseq_#t~post8.offset;havoc subseq_#t~post8.base, subseq_#t~post8.offset; 425#L518-5 [2019-11-19 23:11:16,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:16,746 INFO L82 PathProgramCache]: Analyzing trace with hash -2034626632, now seen corresponding path program 1 times [2019-11-19 23:11:16,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:16,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544558602] [2019-11-19 23:11:16,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,789 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:16,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:16,790 INFO L82 PathProgramCache]: Analyzing trace with hash 74536249, now seen corresponding path program 2 times [2019-11-19 23:11:16,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:16,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542633864] [2019-11-19 23:11:16,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:16,799 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:16,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1928298466, now seen corresponding path program 1 times [2019-11-19 23:11:16,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:16,799 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674443438] [2019-11-19 23:11:16,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:11:16,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674443438] [2019-11-19 23:11:16,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:11:16,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-19 23:11:16,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756826782] [2019-11-19 23:11:17,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:11:17,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:11:17,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:11:17,034 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. cyclomatic complexity: 13 Second operand 8 states. [2019-11-19 23:11:17,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:11:17,117 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-11-19 23:11:17,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 23:11:17,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 44 transitions. [2019-11-19 23:11:17,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 23:11:17,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 29 states and 36 transitions. [2019-11-19 23:11:17,119 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2019-11-19 23:11:17,119 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-19 23:11:17,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 36 transitions. [2019-11-19 23:11:17,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:11:17,120 INFO L688 BuchiCegarLoop]: Abstraction has 29 states and 36 transitions. [2019-11-19 23:11:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 36 transitions. [2019-11-19 23:11:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-19 23:11:17,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-19 23:11:17,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2019-11-19 23:11:17,123 INFO L711 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-11-19 23:11:17,124 INFO L591 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2019-11-19 23:11:17,124 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-19 23:11:17,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2019-11-19 23:11:17,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-19 23:11:17,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:11:17,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:11:17,125 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:11:17,125 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-19 23:11:17,126 INFO L794 eck$LassoCheckResult]: Stem: 518#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 512#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~malloc12.base, main_#t~malloc12.offset, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~nondet15, main_#t~post14, main_~i~0, main_#t~nondet17, main_#t~post16, main_~i~1, main_#t~ret18, 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~nondet10;havoc main_#t~nondet10;main_~length2~0 := main_#t~nondet11;havoc main_#t~nondet11; 513#L530 assume !(main_~length1~0 < 1); 520#L530-2 assume !(main_~length2~0 < 1); 514#L533-1 call main_#t~malloc12.base, main_#t~malloc12.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc12.base, main_#t~malloc12.offset;call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;main_~i~0 := 0; 504#L539-3 assume !!(main_~i~0 < main_~length1~0 - 1);call write~int(main_#t~nondet15, main_~nondetString1~0.base, main_~nondetString1~0.offset + main_~i~0, 1);havoc main_#t~nondet15; 500#L539-2 main_#t~post14 := main_~i~0;main_~i~0 := 1 + main_#t~post14;havoc main_#t~post14; 501#L539-3 assume !(main_~i~0 < main_~length1~0 - 1); 506#L539-4 main_~i~1 := 0; 515#L545-3 assume !!(main_~i~1 < main_~length2~0 - 1);call write~int(main_#t~nondet17, main_~nondetString2~0.base, main_~nondetString2~0.offset + main_~i~1, 1);havoc main_#t~nondet17; 516#L545-2 main_#t~post16 := main_~i~1;main_~i~1 := 1 + main_#t~post16;havoc main_#t~post16; 526#L545-3 assume !(main_~i~1 < main_~length2~0 - 1); 519#L545-4 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);subseq_#in~s.base, subseq_#in~s.offset, subseq_#in~t.base, subseq_#in~t.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;havoc subseq_#res;havoc subseq_#t~mem5, subseq_#t~mem6, subseq_#t~post7.base, subseq_#t~post7.offset, subseq_#t~post8.base, subseq_#t~post8.offset, subseq_#t~mem2, subseq_#t~mem3, subseq_#t~short4, subseq_#t~mem9, subseq_~s.base, subseq_~s.offset, subseq_~t.base, subseq_~t.offset, subseq_~ps~0.base, subseq_~ps~0.offset, subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~s.base, subseq_~s.offset := subseq_#in~s.base, subseq_#in~s.offset;subseq_~t.base, subseq_~t.offset := subseq_#in~t.base, subseq_#in~t.offset;subseq_~ps~0.base, subseq_~ps~0.offset := subseq_~s.base, subseq_~s.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_~t.base, subseq_~t.offset; 508#L518-5 [2019-11-19 23:11:17,126 INFO L796 eck$LassoCheckResult]: Loop: 508#L518-5 call subseq_#t~mem2 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem2; 509#L518-1 assume subseq_#t~short4;call subseq_#t~mem3 := read~int(subseq_~pt~0.base, subseq_~pt~0.offset, 1);subseq_#t~short4 := 0 != subseq_#t~mem3; 502#L518-3 assume !!subseq_#t~short4;havoc subseq_#t~mem2;havoc subseq_#t~short4;havoc subseq_#t~mem3;call subseq_#t~mem5 := read~int(subseq_~ps~0.base, subseq_~ps~0.offset, 1);call subseq_#t~mem6 := read~int(subseq_~pt~0.base, subseq_~pt~0.offset, 1); 503#L519 assume !(subseq_#t~mem5 == subseq_#t~mem6);havoc subseq_#t~mem5;havoc subseq_#t~mem6; 522#L519-2 subseq_#t~post8.base, subseq_#t~post8.offset := subseq_~pt~0.base, subseq_~pt~0.offset;subseq_~pt~0.base, subseq_~pt~0.offset := subseq_#t~post8.base, 1 + subseq_#t~post8.offset;havoc subseq_#t~post8.base, subseq_#t~post8.offset; 508#L518-5 [2019-11-19 23:11:17,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:17,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1066016806, now seen corresponding path program 1 times [2019-11-19 23:11:17,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:17,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382508877] [2019-11-19 23:11:17,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:17,153 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:17,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:17,153 INFO L82 PathProgramCache]: Analyzing trace with hash 74536249, now seen corresponding path program 3 times [2019-11-19 23:11:17,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:17,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156742446] [2019-11-19 23:11:17,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:17,162 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:17,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1075475712, now seen corresponding path program 1 times [2019-11-19 23:11:17,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:11:17,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609034521] [2019-11-19 23:11:17,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:11:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:11:17,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:11:17,718 WARN L191 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 116 [2019-11-19 23:11:17,925 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-11-19 23:11:17,927 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:11:17,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:11:17,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:11:17,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:11:17,928 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:11:17,928 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:17,928 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:11:17,928 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:11:17,928 INFO L133 ssoRankerPreferences]: Filename of dumped script: subseq-alloca-2.i_Iteration6_Lasso [2019-11-19 23:11:17,928 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:11:17,928 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:11:17,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:17,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:18,416 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2019-11-19 23:11:18,540 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2019-11-19 23:11:18,541 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:18,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:18,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:18,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:18,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:18,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:11:19,162 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:11:19,162 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,178 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,180 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,180 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,181 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,190 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,191 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,192 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,192 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,193 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,198 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,201 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,205 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,213 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:19,213 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:19,215 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,220 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 [2019-11-19 23:11:19,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,221 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,222 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,222 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,223 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,227 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,229 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,231 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:11:19,242 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,244 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,244 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,244 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,244 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,244 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,245 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,245 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 [2019-11-19 23:11:19,246 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,253 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,257 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,260 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,268 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,274 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,276 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:19,276 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:19,279 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,284 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,285 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,285 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,287 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,294 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,297 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,300 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:19,300 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:19,302 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,306 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,308 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,309 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,313 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,316 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,324 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,327 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,330 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,331 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,331 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:11:19,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,332 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:11:19,332 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:11:19,334 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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 [2019-11-19 23:11:19,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,349 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:19,349 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:11:19,362 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:11:19,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,377 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:19,378 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,381 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:19,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,393 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:19,393 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,397 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:19,402 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:11:19,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:11:19,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:11:19,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:11:19,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:11:19,419 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:11:19,419 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,448 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:11:19,528 INFO L443 ModelExtractionUtils]: Simplification made 17 calls to the SMT solver. [2019-11-19 23:11:19,528 INFO L444 ModelExtractionUtils]: 20 out of 55 variables were initially zero. Simplification set additionally 30 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a9e2cf44-e78f-4a81-8692-7b3bab9bdac6/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) [2019-11-19 23:11:19,538 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:11:19,541 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-19 23:11:19,541 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:11:19,542 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_subseq_~pt~0.offset, ULTIMATE.start_main_~length2~0) = -1*ULTIMATE.start_subseq_~pt~0.offset + 1*ULTIMATE.start_main_~length2~0 Supporting invariants [-1*v_rep(select #length ULTIMATE.start_main_#t~malloc13.base)_3 + 1*ULTIMATE.start_main_~length2~0 >= 0] [2019-11-19 23:11:19,636 INFO L297 tatePredicateManager]: 24 out of 26 supporting invariants were superfluous and have been removed [2019-11-19 23:11:19,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:11:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:19,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 23:11:19,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:11:19,723 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 23:11:19,724 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-19 23:11:19,724 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 23:11:19,750 INFO L567 ElimStorePlain]: treesize reduction 10, result has 65.5 percent of original size [2019-11-19 23:11:19,751 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 23:11:19,751 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:14, output treesize:10 [2019-11-19 23:11:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:11:19,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-19 23:11:19,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:11:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:11:19,801 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 [2019-11-19 23:11:19,801 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-19 23:11:19,847 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 35 states and 45 transitions. Complement of second has 7 states. [2019-11-19 23:11:19,848 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 [2019-11-19 23:11:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-19 23:11:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-11-19 23:11:19,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 13 letters. Loop has 5 letters. [2019-11-19 23:11:19,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:19,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 18 letters. Loop has 5 letters. [2019-11-19 23:11:19,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:19,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 13 letters. Loop has 10 letters. [2019-11-19 23:11:19,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:11:19,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 45 transitions. [2019-11-19 23:11:19,852 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:11:19,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2019-11-19 23:11:19,852 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:11:19,852 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:11:19,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:11:19,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:11:19,852 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:11:19,852 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:11:19,852 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:11:19,853 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-19 23:11:19,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:11:19,853 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:11:19,853 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 23:11:19,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 11:11:19 BoogieIcfgContainer [2019-11-19 23:11:19,858 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 23:11:19,858 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:11:19,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:11:19,858 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:11:19,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:11:12" (3/4) ... [2019-11-19 23:11:19,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 23:11:19,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:11:19,862 INFO L168 Benchmark]: Toolchain (without parser) took 8416.09 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 296.7 MB). Free memory was 944.7 MB in the beginning and 811.6 MB in the end (delta: 133.1 MB). Peak memory consumption was 429.9 MB. Max. memory is 11.5 GB. [2019-11-19 23:11:19,863 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:11:19,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:11:19,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:11:19,864 INFO L168 Benchmark]: Boogie Preprocessor took 51.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:11:19,865 INFO L168 Benchmark]: RCFGBuilder took 394.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:11:19,865 INFO L168 Benchmark]: BuchiAutomizer took 7438.28 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 176.7 MB). Free memory was 1.1 GB in the beginning and 811.6 MB in the end (delta: 252.6 MB). Peak memory consumption was 429.3 MB. Max. memory is 11.5 GB. [2019-11-19 23:11:19,865 INFO L168 Benchmark]: Witness Printer took 3.42 ms. Allocated memory is still 1.3 GB. Free memory is still 811.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:11:19,868 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 482.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 394.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7438.28 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 176.7 MB). Free memory was 1.1 GB in the beginning and 811.6 MB in the end (delta: 252.6 MB). Peak memory consumption was 429.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.42 ms. Allocated memory is still 1.3 GB. Free memory is still 811.6 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 * 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, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca (length1 * sizeof(char))] + -1 * nondetString1 + -1 * i and consists of 5 locations. One deterministic module has affine ranking function -1 * i + length2 and consists of 4 locations. One deterministic module has affine ranking function -1 * pt + length2 and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 7 iterations. TraceHistogramMax:1. Analysis of lassos took 6.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 96 SDtfs, 182 SDslu, 150 SDs, 0 SdLazy, 161 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc3 concLT0 SILN0 SILU0 SILI0 SILT0 lasso3 LassoPreprocessingBenchmarks: Lassos: inital202 mio100 ax110 hnf98 lsp84 ukn73 mio100 lsp49 div100 bol100 ite100 ukn100 eq177 hnf89 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 2 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...