./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0baccb6c9a05802d446420fb16b8e65dc76eab5e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 01:34:59,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:34:59,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:34:59,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:34:59,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:34:59,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:34:59,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:34:59,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:34:59,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:34:59,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:34:59,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:34:59,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:34:59,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:34:59,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:34:59,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:34:59,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:34:59,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:34:59,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:34:59,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:34:59,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:34:59,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:34:59,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:34:59,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:34:59,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:34:59,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:34:59,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:34:59,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:34:59,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:34:59,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:34:59,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:34:59,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:34:59,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:34:59,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:34:59,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:34:59,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:34:59,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:34:59,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:34:59,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:34:59,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:34:59,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:34:59,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:34:59,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 01:34:59,265 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:34:59,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:34:59,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:34:59,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:34:59,267 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:34:59,267 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 01:34:59,267 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 01:34:59,268 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 01:34:59,268 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 01:34:59,268 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 01:34:59,268 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 01:34:59,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:34:59,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:34:59,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:34:59,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:34:59,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 01:34:59,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 01:34:59,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 01:34:59,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:34:59,270 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 01:34:59,270 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:34:59,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 01:34:59,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:34:59,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:34:59,271 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 01:34:59,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:34:59,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:34:59,272 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 01:34:59,273 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 01:34:59,273 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_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0baccb6c9a05802d446420fb16b8e65dc76eab5e [2019-11-20 01:34:59,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:34:59,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:34:59,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:34:59,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:34:59,515 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:34:59,517 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/java_Nested.c [2019-11-20 01:34:59,581 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/data/f97e60d08/14fd0713a3e74ed9bce73e1f8c7cff39/FLAGefe5210b5 [2019-11-20 01:34:59,998 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:34:59,999 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/sv-benchmarks/c/termination-restricted-15/java_Nested.c [2019-11-20 01:35:00,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/data/f97e60d08/14fd0713a3e74ed9bce73e1f8c7cff39/FLAGefe5210b5 [2019-11-20 01:35:00,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/data/f97e60d08/14fd0713a3e74ed9bce73e1f8c7cff39 [2019-11-20 01:35:00,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:35:00,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:35:00,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:35:00,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:35:00,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:35:00,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da913c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00, skipping insertion in model container [2019-11-20 01:35:00,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,419 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:35:00,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:35:00,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:35:00,613 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:35:00,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:35:00,721 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:35:00,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00 WrapperNode [2019-11-20 01:35:00,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:35:00,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:35:00,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:35:00,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:35:00,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:35:00,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:35:00,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:35:00,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:35:00,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... [2019-11-20 01:35:00,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:35:00,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:35:00,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:35:00,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:35:00,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:35:00,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:35:01,090 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:35:01,090 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 01:35:01,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:35:01 BoogieIcfgContainer [2019-11-20 01:35:01,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:35:01,093 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 01:35:01,093 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 01:35:01,096 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 01:35:01,097 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:35:01,098 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 01:35:00" (1/3) ... [2019-11-20 01:35:01,099 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@244d85bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:35:01, skipping insertion in model container [2019-11-20 01:35:01,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:35:01,100 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:35:00" (2/3) ... [2019-11-20 01:35:01,101 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@244d85bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:35:01, skipping insertion in model container [2019-11-20 01:35:01,101 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:35:01,101 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:35:01" (3/3) ... [2019-11-20 01:35:01,104 INFO L371 chiAutomizerObserver]: Analyzing ICFG java_Nested.c [2019-11-20 01:35:01,165 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 01:35:01,166 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 01:35:01,166 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 01:35:01,166 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:35:01,166 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:35:01,166 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 01:35:01,166 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:35:01,167 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 01:35:01,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 01:35:01,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:35:01,207 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:01,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:01,214 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:01,215 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 01:35:01,215 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 01:35:01,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 01:35:01,216 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:35:01,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:01,216 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:01,217 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:01,217 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 01:35:01,226 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 7#L10-2true [2019-11-20 01:35:01,226 INFO L796 eck$LassoCheckResult]: Loop: 7#L10-2true assume !!(main_~i~0 < 10);main_~j~0 := 3; 3#L12-2true assume !(main_~j~0 < 12); 10#L12-3true main_~i~0 := 1 + main_~i~0; 7#L10-2true [2019-11-20 01:35:01,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,233 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 01:35:01,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000829992] [2019-11-20 01:35:01,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,330 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:01,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,331 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-20 01:35:01,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055260191] [2019-11-20 01:35:01,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:01,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055260191] [2019-11-20 01:35:01,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:35:01,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 01:35:01,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317334350] [2019-11-20 01:35:01,407 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:01,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:01,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 01:35:01,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 01:35:01,427 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-20 01:35:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:01,447 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-20 01:35:01,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 01:35:01,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-20 01:35:01,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 01:35:01,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2019-11-20 01:35:01,456 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 01:35:01,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 01:35:01,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2019-11-20 01:35:01,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:01,458 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-11-20 01:35:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2019-11-20 01:35:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-11-20 01:35:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 01:35:01,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2019-11-20 01:35:01,521 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-11-20 01:35:01,521 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-11-20 01:35:01,521 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 01:35:01,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2019-11-20 01:35:01,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 01:35:01,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:01,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:01,523 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:01,523 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 01:35:01,523 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 29#L10-2 [2019-11-20 01:35:01,523 INFO L796 eck$LassoCheckResult]: Loop: 29#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 26#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 27#L12-2 assume !(main_~j~0 < 12); 30#L12-3 main_~i~0 := 1 + main_~i~0; 29#L10-2 [2019-11-20 01:35:01,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,524 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-20 01:35:01,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368477554] [2019-11-20 01:35:01,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,535 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2019-11-20 01:35:01,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,537 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333249835] [2019-11-20 01:35:01,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:01,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333249835] [2019-11-20 01:35:01,589 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585268969] [2019-11-20 01:35:01,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:01,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 01:35:01,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:01,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:01,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 01:35:01,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458984947] [2019-11-20 01:35:01,657 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:01,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:01,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:35:01,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:35:01,659 INFO L87 Difference]: Start difference. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2019-11-20 01:35:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:01,685 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2019-11-20 01:35:01,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 01:35:01,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2019-11-20 01:35:01,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:35:01,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 7 transitions. [2019-11-20 01:35:01,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 01:35:01,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-20 01:35:01,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-11-20 01:35:01,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:01,689 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 01:35:01,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-11-20 01:35:01,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-20 01:35:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 01:35:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-20 01:35:01,690 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 01:35:01,691 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 01:35:01,691 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 01:35:01,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-20 01:35:01,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:35:01,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:01,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:01,692 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:01,692 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2019-11-20 01:35:01,692 INFO L794 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 56#L10-2 [2019-11-20 01:35:01,693 INFO L796 eck$LassoCheckResult]: Loop: 56#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 53#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 54#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 58#L12-2 assume !(main_~j~0 < 12); 57#L12-3 main_~i~0 := 1 + main_~i~0; 56#L10-2 [2019-11-20 01:35:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,693 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-11-20 01:35:01,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,694 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322259722] [2019-11-20 01:35:01,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,701 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:01,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,702 INFO L82 PathProgramCache]: Analyzing trace with hash 38449199, now seen corresponding path program 2 times [2019-11-20 01:35:01,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,703 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141500607] [2019-11-20 01:35:01,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:01,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141500607] [2019-11-20 01:35:01,754 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544855535] [2019-11-20 01:35:01,754 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:01,796 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 01:35:01,797 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:35:01,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:35:01,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:01,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:01,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 01:35:01,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35811590] [2019-11-20 01:35:01,805 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:01,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:35:01,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:35:01,806 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-11-20 01:35:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:01,831 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-11-20 01:35:01,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:35:01,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-11-20 01:35:01,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 01:35:01,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2019-11-20 01:35:01,833 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 01:35:01,833 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 01:35:01,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-11-20 01:35:01,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:01,834 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 01:35:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-11-20 01:35:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-20 01:35:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 01:35:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-20 01:35:01,835 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 01:35:01,835 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 01:35:01,835 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 01:35:01,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-11-20 01:35:01,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 01:35:01,836 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:01,836 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:01,837 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:01,838 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 1, 1, 1] [2019-11-20 01:35:01,838 INFO L794 eck$LassoCheckResult]: Stem: 88#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 89#L10-2 [2019-11-20 01:35:01,838 INFO L796 eck$LassoCheckResult]: Loop: 89#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 86#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 87#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 92#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 91#L12-2 assume !(main_~j~0 < 12); 90#L12-3 main_~i~0 := 1 + main_~i~0; 89#L10-2 [2019-11-20 01:35:01,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,839 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2019-11-20 01:35:01,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702560222] [2019-11-20 01:35:01,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:01,850 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:01,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1191926928, now seen corresponding path program 3 times [2019-11-20 01:35:01,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:01,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347859265] [2019-11-20 01:35:01,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:01,929 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347859265] [2019-11-20 01:35:01,930 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164258403] [2019-11-20 01:35:01,930 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:01,973 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 01:35:01,973 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:35:01,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 01:35:01,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:01,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:01,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 01:35:01,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104847994] [2019-11-20 01:35:01,984 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:01,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:01,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:35:01,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:35:01,985 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-11-20 01:35:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:02,015 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-11-20 01:35:02,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:35:02,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-11-20 01:35:02,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 01:35:02,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 01:35:02,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 01:35:02,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 01:35:02,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-20 01:35:02,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:02,017 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 01:35:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-20 01:35:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 01:35:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 01:35:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 01:35:02,019 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 01:35:02,019 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 01:35:02,019 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 01:35:02,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2019-11-20 01:35:02,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 01:35:02,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:02,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:02,020 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:02,020 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2019-11-20 01:35:02,021 INFO L794 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 128#L10-2 [2019-11-20 01:35:02,021 INFO L796 eck$LassoCheckResult]: Loop: 128#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 125#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 126#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 132#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 131#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 130#L12-2 assume !(main_~j~0 < 12); 129#L12-3 main_~i~0 := 1 + main_~i~0; 128#L10-2 [2019-11-20 01:35:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,022 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2019-11-20 01:35:02,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,022 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946930328] [2019-11-20 01:35:02,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,028 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:02,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1704969137, now seen corresponding path program 4 times [2019-11-20 01:35:02,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814239263] [2019-11-20 01:35:02,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,111 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814239263] [2019-11-20 01:35:02,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425180620] [2019-11-20 01:35:02,112 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:02,164 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 01:35:02,164 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:35:02,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 01:35:02,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:02,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 01:35:02,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898266600] [2019-11-20 01:35:02,174 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:02,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:02,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 01:35:02,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 01:35:02,175 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 7 states. [2019-11-20 01:35:02,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:02,209 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-20 01:35:02,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 01:35:02,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-20 01:35:02,211 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 01:35:02,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2019-11-20 01:35:02,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-20 01:35:02,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 01:35:02,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2019-11-20 01:35:02,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:02,212 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-20 01:35:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2019-11-20 01:35:02,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-20 01:35:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 01:35:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-20 01:35:02,214 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-20 01:35:02,214 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-20 01:35:02,214 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 01:35:02,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2019-11-20 01:35:02,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 01:35:02,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:02,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:02,216 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:02,216 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 1, 1, 1] [2019-11-20 01:35:02,216 INFO L794 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 173#L10-2 [2019-11-20 01:35:02,216 INFO L796 eck$LassoCheckResult]: Loop: 173#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 170#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 171#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 178#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 177#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 176#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 175#L12-2 assume !(main_~j~0 < 12); 174#L12-3 main_~i~0 := 1 + main_~i~0; 173#L10-2 [2019-11-20 01:35:02,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,217 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2019-11-20 01:35:02,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009006443] [2019-11-20 01:35:02,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,234 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:02,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1314433936, now seen corresponding path program 5 times [2019-11-20 01:35:02,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409146965] [2019-11-20 01:35:02,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409146965] [2019-11-20 01:35:02,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538286337] [2019-11-20 01:35:02,341 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:02,378 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-20 01:35:02,379 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:35:02,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:35:02,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:02,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-20 01:35:02,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822140698] [2019-11-20 01:35:02,390 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:02,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:02,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 01:35:02,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 01:35:02,391 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 8 states. [2019-11-20 01:35:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:02,424 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-11-20 01:35:02,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 01:35:02,425 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2019-11-20 01:35:02,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 01:35:02,426 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2019-11-20 01:35:02,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 01:35:02,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 01:35:02,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2019-11-20 01:35:02,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:02,427 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 01:35:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2019-11-20 01:35:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-20 01:35:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 01:35:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-20 01:35:02,429 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 01:35:02,429 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 01:35:02,429 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 01:35:02,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2019-11-20 01:35:02,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 01:35:02,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:02,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:02,430 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:02,430 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2019-11-20 01:35:02,431 INFO L794 eck$LassoCheckResult]: Stem: 223#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 224#L10-2 [2019-11-20 01:35:02,431 INFO L796 eck$LassoCheckResult]: Loop: 224#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 221#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 222#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 230#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 229#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 228#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 227#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 226#L12-2 assume !(main_~j~0 < 12); 225#L12-3 main_~i~0 := 1 + main_~i~0; 224#L10-2 [2019-11-20 01:35:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,431 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2019-11-20 01:35:02,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957615761] [2019-11-20 01:35:02,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,437 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash -2092744593, now seen corresponding path program 6 times [2019-11-20 01:35:02,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,439 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990011158] [2019-11-20 01:35:02,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,558 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990011158] [2019-11-20 01:35:02,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551020153] [2019-11-20 01:35:02,559 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:02,595 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-11-20 01:35:02,595 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:35:02,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 01:35:02,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:02,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 01:35:02,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676650122] [2019-11-20 01:35:02,606 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:02,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:02,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 01:35:02,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 01:35:02,607 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand 9 states. [2019-11-20 01:35:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:02,639 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-20 01:35:02,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 01:35:02,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2019-11-20 01:35:02,640 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 01:35:02,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2019-11-20 01:35:02,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 01:35:02,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 01:35:02,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2019-11-20 01:35:02,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:02,642 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-20 01:35:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2019-11-20 01:35:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 01:35:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 01:35:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-20 01:35:02,644 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-20 01:35:02,644 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-20 01:35:02,644 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 01:35:02,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2019-11-20 01:35:02,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 01:35:02,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:02,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:02,645 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:02,646 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2019-11-20 01:35:02,646 INFO L794 eck$LassoCheckResult]: Stem: 280#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 281#L10-2 [2019-11-20 01:35:02,646 INFO L796 eck$LassoCheckResult]: Loop: 281#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 278#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 279#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 288#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 287#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 286#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 285#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 284#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 283#L12-2 assume !(main_~j~0 < 12); 282#L12-3 main_~i~0 := 1 + main_~i~0; 281#L10-2 [2019-11-20 01:35:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2019-11-20 01:35:02,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,649 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461682927] [2019-11-20 01:35:02,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,662 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,662 INFO L82 PathProgramCache]: Analyzing trace with hash -450571184, now seen corresponding path program 7 times [2019-11-20 01:35:02,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,663 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733879258] [2019-11-20 01:35:02,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733879258] [2019-11-20 01:35:02,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303258465] [2019-11-20 01:35:02,805 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:02,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 01:35:02,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:02,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:02,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-20 01:35:02,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685225213] [2019-11-20 01:35:02,878 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:02,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:02,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 01:35:02,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 01:35:02,882 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 10 states. [2019-11-20 01:35:02,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:02,920 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-20 01:35:02,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 01:35:02,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2019-11-20 01:35:02,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-20 01:35:02,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2019-11-20 01:35:02,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-20 01:35:02,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 01:35:02,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2019-11-20 01:35:02,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:02,923 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 01:35:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2019-11-20 01:35:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 01:35:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 01:35:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-20 01:35:02,925 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 01:35:02,928 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 01:35:02,928 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 01:35:02,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2019-11-20 01:35:02,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-20 01:35:02,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:02,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:02,930 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:02,931 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2019-11-20 01:35:02,931 INFO L794 eck$LassoCheckResult]: Stem: 343#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 344#L10-2 [2019-11-20 01:35:02,931 INFO L796 eck$LassoCheckResult]: Loop: 344#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 341#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 342#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 352#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 351#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 350#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 349#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 348#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 347#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 346#L12-2 assume !(main_~j~0 < 12); 345#L12-3 main_~i~0 := 1 + main_~i~0; 344#L10-2 [2019-11-20 01:35:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,933 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2019-11-20 01:35:02,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,934 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544196323] [2019-11-20 01:35:02,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:02,943 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:02,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1082803057, now seen corresponding path program 8 times [2019-11-20 01:35:02,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:02,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645041336] [2019-11-20 01:35:02,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:03,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645041336] [2019-11-20 01:35:03,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585931632] [2019-11-20 01:35:03,099 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:35:03,141 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 01:35:03,141 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:35:03,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 01:35:03,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:03,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:35:03,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 01:35:03,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381897399] [2019-11-20 01:35:03,157 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 01:35:03,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:35:03,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 01:35:03,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 01:35:03,158 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 11 states. [2019-11-20 01:35:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:35:03,203 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-20 01:35:03,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 01:35:03,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2019-11-20 01:35:03,205 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-20 01:35:03,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2019-11-20 01:35:03,206 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 01:35:03,206 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-20 01:35:03,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2019-11-20 01:35:03,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:03,207 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-20 01:35:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2019-11-20 01:35:03,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-20 01:35:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 01:35:03,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-20 01:35:03,209 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-20 01:35:03,209 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-20 01:35:03,209 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-20 01:35:03,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2019-11-20 01:35:03,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-20 01:35:03,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:03,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:03,211 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:35:03,211 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2019-11-20 01:35:03,211 INFO L794 eck$LassoCheckResult]: Stem: 412#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 413#L10-2 [2019-11-20 01:35:03,211 INFO L796 eck$LassoCheckResult]: Loop: 413#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 410#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 411#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 422#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 421#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 420#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 419#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 418#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 417#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 416#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 415#L12-2 assume !(main_~j~0 < 12); 414#L12-3 main_~i~0 := 1 + main_~i~0; 413#L10-2 [2019-11-20 01:35:03,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:03,212 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2019-11-20 01:35:03,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:03,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904180239] [2019-11-20 01:35:03,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:03,223 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash 792845360, now seen corresponding path program 9 times [2019-11-20 01:35:03,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:03,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260626690] [2019-11-20 01:35:03,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:03,276 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:03,277 INFO L82 PathProgramCache]: Analyzing trace with hash 287286735, now seen corresponding path program 1 times [2019-11-20 01:35:03,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:03,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097824912] [2019-11-20 01:35:03,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:03,325 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:03,592 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-11-20 01:35:03,635 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:35:03,637 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:35:03,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:35:03,637 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:35:03,638 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:35:03,638 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:03,638 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:35:03,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:35:03,638 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2019-11-20 01:35:03,639 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:35:03,639 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:35:03,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,800 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:35:03,801 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:03,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:03,810 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:03,821 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:03,821 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:03,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:03,840 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:03,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:03,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:03,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:03,872 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:03,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:03,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:03,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:03,912 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:03,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:35:03,941 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:03,971 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:35:03,975 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:35:03,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:35:03,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:35:03,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:35:03,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:35:03,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:03,975 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:35:03,975 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:35:03,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2019-11-20 01:35:03,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:35:03,976 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:35:03,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:03,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,071 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:35:04,077 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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 [2019-11-20 01:35:04,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:04,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,097 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:35:04,097 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:35:04,103 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,116 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:04,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:35:04,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:35:04,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:35:04,123 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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 [2019-11-20 01:35:04,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:04,136 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,144 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:35:04,145 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:35:04,151 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,168 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:04,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:35:04,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:35:04,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:35:04,179 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:35:04,184 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:35:04,184 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:04,199 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:35:04,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:35:04,200 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:35:04,201 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,206 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:35:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:04,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:35:04,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:04,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:35:04,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-20 01:35:04,328 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 01:35:04,329 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-11-20 01:35:04,362 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 25 states and 28 transitions. Complement of second has 4 states. [2019-11-20 01:35:04,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:35:04,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 01:35:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 01:35:04,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 12 letters. [2019-11-20 01:35:04,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:04,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 13 letters. Loop has 12 letters. [2019-11-20 01:35:04,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:04,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 24 letters. [2019-11-20 01:35:04,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:04,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2019-11-20 01:35:04,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 01:35:04,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 27 transitions. [2019-11-20 01:35:04,369 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 01:35:04,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 01:35:04,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2019-11-20 01:35:04,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:35:04,369 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-20 01:35:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2019-11-20 01:35:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2019-11-20 01:35:04,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 01:35:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-20 01:35:04,372 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-20 01:35:04,372 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-20 01:35:04,372 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-20 01:35:04,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-11-20 01:35:04,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 01:35:04,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:04,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:04,374 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 01:35:04,374 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 01:35:04,374 INFO L794 eck$LassoCheckResult]: Stem: 510#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 511#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 507#L12-2 [2019-11-20 01:35:04,374 INFO L796 eck$LassoCheckResult]: Loop: 507#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 507#L12-2 [2019-11-20 01:35:04,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 01:35:04,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:04,375 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81655412] [2019-11-20 01:35:04,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,380 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:04,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,381 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-20 01:35:04,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:04,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634103048] [2019-11-20 01:35:04,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,386 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:04,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,386 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-20 01:35:04,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:04,387 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86774494] [2019-11-20 01:35:04,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,393 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:04,421 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:35:04,421 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:35:04,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:35:04,421 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:35:04,422 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:35:04,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,422 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:35:04,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:35:04,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2019-11-20 01:35:04,422 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:35:04,422 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:35:04,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,501 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:35:04,501 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:04,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:04,531 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:04,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:04,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:04,562 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:04,568 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:04,586 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:35:04,609 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:04,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:04,657 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:35:04,683 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,696 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:35:04,699 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:35:04,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:35:04,699 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:35:04,699 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:35:04,699 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:35:04,699 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:35:04,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:35:04,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2019-11-20 01:35:04,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:35:04,700 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:35:04,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:04,791 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:35:04,791 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:04,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,822 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:35:04,824 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,828 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,836 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,843 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:35:04,843 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:35:04,848 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,860 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:04,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:35:04,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,864 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:35:04,864 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,876 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:04,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:04,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:35:04,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:04,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:04,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:04,880 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:35:04,881 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,884 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:35:04,887 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:35:04,887 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:04,892 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:35:04,893 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:35:04,893 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:35:04,893 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-11-20 01:35:04,904 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:04,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:35:04,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:04,936 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:35:04,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:04,937 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:35:04,937 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-20 01:35:04,953 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 31 states and 36 transitions. Complement of second has 5 states. [2019-11-20 01:35:04,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:35:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:35:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 01:35:04,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-20 01:35:04,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:04,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-20 01:35:04,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:04,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 01:35:04,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:04,955 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2019-11-20 01:35:04,956 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 01:35:04,957 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 31 transitions. [2019-11-20 01:35:04,957 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 01:35:04,958 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 01:35:04,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2019-11-20 01:35:04,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:35:04,958 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-20 01:35:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2019-11-20 01:35:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-11-20 01:35:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 01:35:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-20 01:35:04,960 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 01:35:04,960 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 01:35:04,961 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-20 01:35:04,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-11-20 01:35:04,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 01:35:04,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:35:04,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:35:04,962 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1] [2019-11-20 01:35:04,962 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 01:35:04,962 INFO L794 eck$LassoCheckResult]: Stem: 585#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 586#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 583#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 584#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 596#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 595#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 594#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 593#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 592#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 591#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 590#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 589#L12-2 assume !(main_~j~0 < 12); 588#L12-3 main_~i~0 := 1 + main_~i~0; 587#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 582#L12-2 [2019-11-20 01:35:04,963 INFO L796 eck$LassoCheckResult]: Loop: 582#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 582#L12-2 [2019-11-20 01:35:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,963 INFO L82 PathProgramCache]: Analyzing trace with hash 315954203, now seen corresponding path program 2 times [2019-11-20 01:35:04,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:04,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246163255] [2019-11-20 01:35:04,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,985 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:04,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,986 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-20 01:35:04,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:04,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266417796] [2019-11-20 01:35:04,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:04,991 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:04,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:04,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1204645720, now seen corresponding path program 3 times [2019-11-20 01:35:04,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:35:04,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741754251] [2019-11-20 01:35:04,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:35:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:35:05,012 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:35:05,037 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:35:05,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:35:05,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:35:05,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:35:05,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:35:05,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:35:05,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:35:05,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2019-11-20 01:35:05,039 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:35:05,039 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:35:05,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,121 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:35:05,121 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/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) [2019-11-20 01:35:05,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:05,131 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:05,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:35:05,144 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:05,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=-3}, {ULTIMATE.start_main_~c~0=2}, {ULTIMATE.start_main_~c~0=2}] Lambdas: [1, 0, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:05,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:05,171 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,177 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:35:05,177 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:05,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:35:05,184 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:05,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:35:05,196 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,206 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:35:05,208 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:35:05,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:35:05,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:35:05,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:35:05,209 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:35:05,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:35:05,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:35:05,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2019-11-20 01:35:05,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:35:05,209 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:35:05,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:35:05,277 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:35:05,277 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:05,288 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:05,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:05,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:35:05,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:05,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:05,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:05,292 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:35:05,292 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,294 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:05,304 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:35:05,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:35:05,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:35:05,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:35:05,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:35:05,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:35:05,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:35:05,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,315 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:35:05,318 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:35:05,318 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e78b0ac7-aa8a-4c09-a10d-a374562d4c16/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:35:05,325 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:35:05,325 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:35:05,325 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:35:05,326 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2019-11-20 01:35:05,328 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:35:05,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:05,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:35:05,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:05,368 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:35:05,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:05,369 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:35:05,369 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 01:35:05,382 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2019-11-20 01:35:05,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:35:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:35:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 01:35:05,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-20 01:35:05,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:05,385 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 01:35:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:05,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:35:05,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:05,424 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:35:05,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:05,425 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:35:05,425 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 01:35:05,438 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2019-11-20 01:35:05,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:35:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:35:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 01:35:05,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-20 01:35:05,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:05,441 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 01:35:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:35:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:05,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:35:05,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:35:05,488 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:35:05,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:35:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:35:05,489 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:35:05,489 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 01:35:05,504 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 18 states and 20 transitions. Complement of second has 4 states. [2019-11-20 01:35:05,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:35:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:35:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 01:35:05,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-20 01:35:05,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:05,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 15 letters. Loop has 1 letters. [2019-11-20 01:35:05,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:05,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2019-11-20 01:35:05,508 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:35:05,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2019-11-20 01:35:05,509 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:35:05,509 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-11-20 01:35:05,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 01:35:05,509 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 01:35:05,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 01:35:05,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:35:05,510 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:35:05,510 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:35:05,510 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:35:05,510 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-11-20 01:35:05,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 01:35:05,510 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:35:05,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 01:35:05,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 01:35:05 BoogieIcfgContainer [2019-11-20 01:35:05,519 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 01:35:05,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:35:05,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:35:05,520 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:35:05,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:35:01" (3/4) ... [2019-11-20 01:35:05,525 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 01:35:05,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:35:05,531 INFO L168 Benchmark]: Toolchain (without parser) took 5126.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.1 MB in the beginning and 960.2 MB in the end (delta: -14.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:35:05,532 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:35:05,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:35:05,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:35:05,533 INFO L168 Benchmark]: Boogie Preprocessor took 24.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:35:05,534 INFO L168 Benchmark]: RCFGBuilder took 305.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:35:05,534 INFO L168 Benchmark]: BuchiAutomizer took 4427.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.2 MB in the end (delta: 149.5 MB). Peak memory consumption was 149.5 MB. Max. memory is 11.5 GB. [2019-11-20 01:35:05,534 INFO L168 Benchmark]: Witness Printer took 5.81 ms. Allocated memory is still 1.2 GB. Free memory is still 960.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:35:05,542 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 305.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4427.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 960.2 MB in the end (delta: 149.5 MB). Peak memory consumption was 149.5 MB. Max. memory is 11.5 GB. * Witness Printer took 5.81 ms. Allocated memory is still 1.2 GB. Free memory is still 960.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (9 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 19 and consists of 3 locations. One deterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * j + 23 and consists of 3 locations. 9 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 3.4s. Construction of modules took 0.2s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 10. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 10. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 62 SDtfs, 21 SDslu, 50 SDs, 0 SdLazy, 157 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI9 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf99 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...