./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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 e334e85dd18553afecc96b27cf49a003304cbca8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:41,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:41,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:41,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:41,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:41,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:41,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:41,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:41,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:41,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:41,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:41,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:41,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:41,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:41,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:41,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:41,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:41,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:41,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:41,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:41,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:41,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:41,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:41,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:41,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:41,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:41,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:41,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:41,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:41,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:41,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:41,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:41,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:41,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:41,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:41,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:41,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:41,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:41,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:41,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:41,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:41,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:02:41,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:41,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:41,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:41,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:41,141 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:41,141 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:02:41,141 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:02:41,141 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:02:41,142 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:02:41,142 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:02:41,142 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:02:41,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:41,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:41,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:41,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:41,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:02:41,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:02:41,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:02:41,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:41,144 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:02:41,144 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:41,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:02:41,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:41,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:41,144 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:02:41,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:41,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:41,145 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:02:41,146 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:02:41,146 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/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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 -> e334e85dd18553afecc96b27cf49a003304cbca8 [2019-10-22 09:02:41,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:41,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:41,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:41,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:41,189 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:41,191 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-10-22 09:02:41,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/data/76135ffc7/9a688c343cbe4c67843e74f90b515724/FLAGbcb133eee [2019-10-22 09:02:41,616 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:41,616 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-10-22 09:02:41,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/data/76135ffc7/9a688c343cbe4c67843e74f90b515724/FLAGbcb133eee [2019-10-22 09:02:42,034 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/data/76135ffc7/9a688c343cbe4c67843e74f90b515724 [2019-10-22 09:02:42,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:42,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:42,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:42,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:42,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:42,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aefa56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42, skipping insertion in model container [2019-10-22 09:02:42,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,053 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:42,065 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:42,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:42,208 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:42,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:42,292 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:42,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42 WrapperNode [2019-10-22 09:02:42,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:42,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:42,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:42,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:42,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:42,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:42,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:42,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:42,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... [2019-10-22 09:02:42,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:42,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:42,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:42,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:42,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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 [2019-10-22 09:02:42,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:42,502 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:42,502 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 09:02:42,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:42 BoogieIcfgContainer [2019-10-22 09:02:42,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:42,504 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:02:42,504 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:02:42,506 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:02:42,507 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:42,507 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:02:42" (1/3) ... [2019-10-22 09:02:42,508 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34eefa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:42, skipping insertion in model container [2019-10-22 09:02:42,508 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:42,508 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:42" (2/3) ... [2019-10-22 09:02:42,508 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34eefa7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:02:42, skipping insertion in model container [2019-10-22 09:02:42,509 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:02:42,509 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:42" (3/3) ... [2019-10-22 09:02:42,510 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2019-10-22 09:02:42,551 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:02:42,551 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:02:42,552 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:02:42,552 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:42,552 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:42,552 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:02:42,552 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:42,552 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:02:42,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:02:42,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:02:42,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:42,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:42,587 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:02:42,587 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:02:42,587 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:02:42,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-10-22 09:02:42,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:02:42,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:42,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:42,589 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:02:42,589 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:02:42,596 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2019-10-22 09:02:42,597 INFO L793 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2019-10-22 09:02:42,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:42,602 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-10-22 09:02:42,611 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:42,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686381439] [2019-10-22 09:02:42,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:42,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:42,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:42,684 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:42,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2019-10-22 09:02:42,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:42,685 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522873190] [2019-10-22 09:02:42,685 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:42,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:42,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:42,698 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:42,700 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-10-22 09:02:42,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:42,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672084611] [2019-10-22 09:02:42,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:42,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:42,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:42,717 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:42,762 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:42,762 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:42,763 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:42,763 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:42,763 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:42,763 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:42,763 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:42,763 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:42,763 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-10-22 09:02:42,764 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:42,764 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:42,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:42,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:42,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:42,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:42,916 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:42,917 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:42,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:42,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:42,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:42,930 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/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:42,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:42,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:42,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:42,952 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/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:42,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:42,958 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:42,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:42,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:43,069 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:43,071 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:43,071 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:43,071 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:43,071 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:43,071 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:43,071 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:43,071 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:43,071 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:43,072 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2019-10-22 09:02:43,072 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:43,072 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:43,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,160 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:43,164 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:43,166 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:43,167 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:43,168 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:43,168 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:43,168 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:43,172 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:43,172 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:43,177 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:43,178 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:43,179 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:43,179 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:43,179 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:43,179 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:43,181 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:43,181 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:43,188 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:43,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:43,189 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:43,190 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:43,190 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:43,190 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:43,190 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:43,191 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:43,191 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:43,197 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:43,205 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 09:02:43,205 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:43,207 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:43,207 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:43,207 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:43,208 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-10-22 09:02:43,211 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:43,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,257 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:43,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:43,273 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 [2019-10-22 09:02:43,274 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-10-22 09:02:43,309 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2019-10-22 09:02:43,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 09:02:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-10-22 09:02:43,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2019-10-22 09:02:43,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:43,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 09:02:43,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:43,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2019-10-22 09:02:43,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:43,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-10-22 09:02:43,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:02:43,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-10-22 09:02:43,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 09:02:43,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 09:02:43,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-10-22 09:02:43,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:43,324 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 09:02:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-10-22 09:02:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 09:02:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 09:02:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-10-22 09:02:43,346 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 09:02:43,346 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 09:02:43,346 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 09:02:43,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-10-22 09:02:43,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:02:43,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:43,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:43,347 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 09:02:43,347 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:02:43,347 INFO L791 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2019-10-22 09:02:43,348 INFO L793 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2019-10-22 09:02:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:43,348 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2019-10-22 09:02:43,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:43,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452460256] [2019-10-22 09:02:43,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:43,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452460256] [2019-10-22 09:02:43,381 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:43,381 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:43,381 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995369610] [2019-10-22 09:02:43,383 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:43,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2019-10-22 09:02:43,384 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:43,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471121567] [2019-10-22 09:02:43,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:43,391 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:43,424 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:43,424 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:43,424 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:43,424 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:43,424 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:43,424 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:43,424 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:43,424 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:43,425 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-10-22 09:02:43,425 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:43,425 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:43,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,494 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:43,494 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:43,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:43,501 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:43,504 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:43,504 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/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:43,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:43,510 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:43,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:43,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:43,618 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:43,620 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:43,621 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:43,621 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:43,621 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:43,621 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:43,621 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:43,621 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:43,621 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:43,621 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2019-10-22 09:02:43,621 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:43,621 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:43,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,703 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:43,703 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:43,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:43,705 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:43,705 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:43,705 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:43,705 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:43,706 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:43,707 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:43,722 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:43,722 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:43,723 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:43,723 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:43,723 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:43,723 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:43,723 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:43,724 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:43,724 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:43,728 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:43,743 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 09:02:43,743 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:43,744 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:43,744 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:43,744 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:43,744 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2019-10-22 09:02:43,745 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:43,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:43,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,785 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:43,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:43,786 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 [2019-10-22 09:02:43,786 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 09:02:43,796 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2019-10-22 09:02:43,798 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 [2019-10-22 09:02:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-10-22 09:02:43,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 09:02:43,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:43,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-10-22 09:02:43,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:43,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-10-22 09:02:43,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:43,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2019-10-22 09:02:43,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:02:43,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2019-10-22 09:02:43,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 09:02:43,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 09:02:43,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2019-10-22 09:02:43,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:43,803 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-10-22 09:02:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2019-10-22 09:02:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 09:02:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 09:02:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2019-10-22 09:02:43,805 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2019-10-22 09:02:43,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:43,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 09:02:43,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 09:02:43,810 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2019-10-22 09:02:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:43,820 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-10-22 09:02:43,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 09:02:43,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-10-22 09:02:43,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:02:43,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2019-10-22 09:02:43,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 09:02:43,822 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 09:02:43,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-10-22 09:02:43,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:43,823 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-10-22 09:02:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-10-22 09:02:43,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-10-22 09:02:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 09:02:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-10-22 09:02:43,824 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-10-22 09:02:43,824 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-10-22 09:02:43,824 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 09:02:43,825 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-10-22 09:02:43,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-10-22 09:02:43,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:43,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:43,827 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2019-10-22 09:02:43,828 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-10-22 09:02:43,828 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2019-10-22 09:02:43,828 INFO L793 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2019-10-22 09:02:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2019-10-22 09:02:43,828 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:43,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241526010] [2019-10-22 09:02:43,829 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,829 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:02:43,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241526010] [2019-10-22 09:02:43,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73732130] [2019-10-22 09:02:43,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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 [2019-10-22 09:02:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:43,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 09:02:43,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 09:02:43,898 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-22 09:02:43,898 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-10-22 09:02:43,898 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232440810] [2019-10-22 09:02:43,899 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 09:02:43,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:43,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2019-10-22 09:02:43,899 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:43,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241334837] [2019-10-22 09:02:43,899 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,900 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:43,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:43,906 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:43,925 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:43,925 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:43,925 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:43,926 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:43,926 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:43,926 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:43,926 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:43,926 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:43,926 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-10-22 09:02:43,926 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:43,926 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:43,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:43,988 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:43,989 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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) [2019-10-22 09:02:43,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:43,993 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 [2019-10-22 09:02:43,997 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:43,998 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/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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) [2019-10-22 09:02:44,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:44,007 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:44,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:44,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:44,166 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:44,169 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:44,169 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:44,169 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:44,169 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:44,169 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:44,169 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:44,169 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:44,169 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:44,170 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2019-10-22 09:02:44,170 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:44,170 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:44,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,236 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:44,236 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:44,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:44,237 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:44,238 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:44,238 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:44,238 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:44,239 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 09:02:44,239 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 09:02:44,247 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:44,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:44,251 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:44,252 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:44,252 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:44,253 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:44,253 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:44,253 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:44,253 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:44,256 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:44,264 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 09:02:44,268 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:44,268 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:44,269 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:44,269 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:44,269 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2019-10-22 09:02:44,269 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,302 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:44,303 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 [2019-10-22 09:02:44,303 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-10-22 09:02:44,312 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-10-22 09:02:44,314 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 [2019-10-22 09:02:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-10-22 09:02:44,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-10-22 09:02:44,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,315 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:02:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,346 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:44,347 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 [2019-10-22 09:02:44,347 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-10-22 09:02:44,353 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2019-10-22 09:02:44,354 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 [2019-10-22 09:02:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:44,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-10-22 09:02:44,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2019-10-22 09:02:44,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,358 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 09:02:44,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,383 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:44,384 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 [2019-10-22 09:02:44,384 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-10-22 09:02:44,392 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2019-10-22 09:02:44,392 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 [2019-10-22 09:02:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 09:02:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-10-22 09:02:44,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2019-10-22 09:02:44,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2019-10-22 09:02:44,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2019-10-22 09:02:44,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2019-10-22 09:02:44,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:02:44,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2019-10-22 09:02:44,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-10-22 09:02:44,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 09:02:44,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-10-22 09:02:44,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:44,396 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-10-22 09:02:44,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-10-22 09:02:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2019-10-22 09:02:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 09:02:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-10-22 09:02:44,397 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-10-22 09:02:44,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:44,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:44,398 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 4 states. [2019-10-22 09:02:44,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:44,407 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-10-22 09:02:44,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:44,408 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-10-22 09:02:44,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:02:44,409 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2019-10-22 09:02:44,409 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 09:02:44,409 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 09:02:44,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-10-22 09:02:44,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 09:02:44,409 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 09:02:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-10-22 09:02:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2019-10-22 09:02:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 09:02:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-10-22 09:02:44,410 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:02:44,410 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 09:02:44,410 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 09:02:44,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-10-22 09:02:44,411 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 09:02:44,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:02:44,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:02:44,411 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 09:02:44,411 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-10-22 09:02:44,412 INFO L791 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2019-10-22 09:02:44,412 INFO L793 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2019-10-22 09:02:44,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,413 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-10-22 09:02:44,413 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:44,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895836794] [2019-10-22 09:02:44,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:44,413 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:44,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:44,419 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2019-10-22 09:02:44,419 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:44,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832745457] [2019-10-22 09:02:44,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:44,420 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:44,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:44,433 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:44,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,433 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2019-10-22 09:02:44,433 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:44,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471243640] [2019-10-22 09:02:44,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:44,434 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:44,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:44,443 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:44,479 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:44,479 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:44,479 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:44,479 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:44,479 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 09:02:44,480 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:44,480 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:44,480 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:44,480 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-10-22 09:02:44,480 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:44,480 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:44,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,553 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:44,553 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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) [2019-10-22 09:02:44,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:44,558 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 [2019-10-22 09:02:44,562 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:44,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:44,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:44,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:44,574 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 09:02:44,574 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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) [2019-10-22 09:02:44,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 09:02:44,580 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bbfb1455-239b-41a0-836f-f9a3ddf956d3/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 [2019-10-22 09:02:44,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 09:02:44,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 09:02:44,630 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 09:02:44,631 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 09:02:44,632 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 09:02:44,632 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 09:02:44,632 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 09:02:44,632 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 09:02:44,632 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 09:02:44,632 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 09:02:44,632 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 09:02:44,632 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2019-10-22 09:02:44,632 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 09:02:44,632 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 09:02:44,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 09:02:44,690 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 09:02:44,690 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 09:02:44,690 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:44,691 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:44,691 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:44,691 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:44,691 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:44,692 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:44,692 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:44,692 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:44,695 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 09:02:44,695 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-10-22 09:02:44,696 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 09:02:44,696 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 09:02:44,696 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 09:02:44,696 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 09:02:44,696 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 09:02:44,697 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 09:02:44,697 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 09:02:44,699 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 09:02:44,701 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 09:02:44,701 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 09:02:44,702 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 09:02:44,702 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 09:02:44,702 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 09:02:44,702 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] [2019-10-22 09:02:44,702 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 09:02:44,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:44,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 09:02:44,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:02:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:44,764 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 09:02:44,765 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-10-22 09:02:44,780 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2019-10-22 09:02:44,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-10-22 09:02:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 09:02:44,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-10-22 09:02:44,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-10-22 09:02:44,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-10-22 09:02:44,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2019-10-22 09:02:44,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 09:02:44,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2019-10-22 09:02:44,782 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:44,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-10-22 09:02:44,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 09:02:44,782 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 09:02:44,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 09:02:44,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 09:02:44,782 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:44,782 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:44,782 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:44,782 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 09:02:44,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:44,782 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 09:02:44,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 09:02:44,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:02:44 BoogieIcfgContainer [2019-10-22 09:02:44,787 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:02:44,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:44,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:44,787 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:44,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:42" (3/4) ... [2019-10-22 09:02:44,791 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 09:02:44,791 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:44,793 INFO L168 Benchmark]: Toolchain (without parser) took 2754.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 944.7 MB in the beginning and 794.6 MB in the end (delta: 150.1 MB). Peak memory consumption was 262.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:44,793 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:44,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:44,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:44,795 INFO L168 Benchmark]: Boogie Preprocessor took 13.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:44,795 INFO L168 Benchmark]: RCFGBuilder took 167.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:44,795 INFO L168 Benchmark]: BuchiAutomizer took 2282.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 801.5 MB in the end (delta: 286.9 MB). Peak memory consumption was 286.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:44,796 INFO L168 Benchmark]: Witness Printer took 3.90 ms. Allocated memory is still 1.1 GB. Free memory was 801.5 MB in the beginning and 794.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:44,799 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -162.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.70 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 167.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2282.98 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 801.5 MB in the end (delta: 286.9 MB). Peak memory consumption was 286.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.90 ms. Allocated memory is still 1.1 GB. Free memory was 801.5 MB in the beginning and 794.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...