./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array20_alloca.i --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/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array20_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/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 15cc26ae0dc42c909592f114b7003fa240a2d07d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:40:11,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:40:11,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:40:11,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:40:11,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:40:11,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:40:11,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:40:11,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:40:11,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:40:11,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:40:11,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:40:11,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:40:11,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:40:11,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:40:11,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:40:11,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:40:11,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:40:11,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:40:11,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:40:11,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:40:11,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:40:11,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:40:11,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:40:11,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:40:11,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:40:11,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:40:11,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:40:11,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:40:11,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:40:11,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:40:11,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:40:11,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:40:11,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:40:11,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:40:11,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:40:11,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:40:11,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:40:11,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:40:11,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:40:11,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:40:11,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:40:11,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:40:11,160 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:40:11,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:40:11,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:40:11,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:40:11,175 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:40:11,175 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:40:11,175 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:40:11,175 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:40:11,176 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:40:11,176 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:40:11,176 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:40:11,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:40:11,177 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:40:11,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:40:11,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:40:11,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:40:11,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:40:11,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:40:11,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:40:11,179 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:40:11,179 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:40:11,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:40:11,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:40:11,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:40:11,180 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:40:11,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:40:11,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:40:11,181 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:40:11,182 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:40:11,186 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/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 -> 15cc26ae0dc42c909592f114b7003fa240a2d07d [2019-11-15 23:40:11,222 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:40:11,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:40:11,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:40:11,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:40:11,244 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:40:11,245 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/../../sv-benchmarks/c/termination-15/array20_alloca.i [2019-11-15 23:40:11,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/data/c4f7127bb/04afe302acd3477f91ffa1927d694929/FLAGa324f77a3 [2019-11-15 23:40:11,923 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:40:11,924 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/sv-benchmarks/c/termination-15/array20_alloca.i [2019-11-15 23:40:11,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/data/c4f7127bb/04afe302acd3477f91ffa1927d694929/FLAGa324f77a3 [2019-11-15 23:40:12,227 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/data/c4f7127bb/04afe302acd3477f91ffa1927d694929 [2019-11-15 23:40:12,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:40:12,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:40:12,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:40:12,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:40:12,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:40:12,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64129687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12, skipping insertion in model container [2019-11-15 23:40:12,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,260 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:40:12,299 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:40:12,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:40:12,754 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:40:12,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:40:12,906 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:40:12,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12 WrapperNode [2019-11-15 23:40:12,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:40:12,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:40:12,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:40:12,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:40:12,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:40:12,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:40:12,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:40:12,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:40:12,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:12,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:13,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:13,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... [2019-11-15 23:40:13,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:40:13,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:40:13,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:40:13,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:40:13,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:40:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:40:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:40:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:40:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:40:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:40:13,415 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:40:13,415 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 23:40:13,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:40:13 BoogieIcfgContainer [2019-11-15 23:40:13,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:40:13,417 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:40:13,418 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:40:13,422 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:40:13,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:40:13,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:40:12" (1/3) ... [2019-11-15 23:40:13,425 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6896d6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:40:13, skipping insertion in model container [2019-11-15 23:40:13,425 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:40:13,425 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:40:12" (2/3) ... [2019-11-15 23:40:13,425 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6896d6e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:40:13, skipping insertion in model container [2019-11-15 23:40:13,426 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:40:13,426 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:40:13" (3/3) ... [2019-11-15 23:40:13,428 INFO L371 chiAutomizerObserver]: Analyzing ICFG array20_alloca.i [2019-11-15 23:40:13,484 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:40:13,484 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:40:13,484 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:40:13,484 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:40:13,484 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:40:13,485 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:40:13,485 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:40:13,485 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:40:13,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-15 23:40:13,535 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-15 23:40:13,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:13,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:13,543 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 23:40:13,554 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:40:13,554 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:40:13,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-15 23:40:13,556 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-15 23:40:13,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:13,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:13,557 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-15 23:40:13,557 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 23:40:13,569 INFO L791 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 7#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 15#L367true assume !(main_~length~0 < 1); 4#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 12#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 16#L370-3true [2019-11-15 23:40:13,570 INFO L793 eck$LassoCheckResult]: Loop: 16#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 8#L372true assume main_#t~mem209 < 1;havoc main_#t~mem209;call write~int(1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 14#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 16#L370-3true [2019-11-15 23:40:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2019-11-15 23:40:13,588 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:13,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060216867] [2019-11-15 23:40:13,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:13,589 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:13,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:13,777 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:13,779 INFO L82 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2019-11-15 23:40:13,779 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:13,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371630971] [2019-11-15 23:40:13,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:13,780 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:13,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:13,832 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:13,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:13,834 INFO L82 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2019-11-15 23:40:13,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:13,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373826536] [2019-11-15 23:40:13,835 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:13,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:13,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:13,905 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:14,192 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2019-11-15 23:40:14,295 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:40:14,300 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:40:14,300 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:40:14,300 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:40:14,301 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:40:14,301 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:40:14,301 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:40:14,301 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:40:14,301 INFO L131 ssoRankerPreferences]: Filename of dumped script: array20_alloca.i_Iteration1_Lasso [2019-11-15 23:40:14,302 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:40:14,302 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:40:14,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:40:14,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:40:14,871 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:40:14,873 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,874 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,875 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:14,875 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,875 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,875 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,877 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:14,877 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:14,881 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:14,881 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,882 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,882 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:14,883 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,883 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,883 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,884 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:14,884 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:14,885 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:14,885 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,886 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,886 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:14,886 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,887 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,887 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,887 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:14,888 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:14,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:14,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,890 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,890 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,891 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,891 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,894 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:14,894 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:14,898 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:14,899 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,900 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,900 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:14,900 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,900 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,900 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,901 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:14,901 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:14,902 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:14,903 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,903 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,903 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:40:14,904 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,904 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,904 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,905 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:40:14,905 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:40:14,906 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:14,906 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,907 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,907 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,907 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,907 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,910 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:14,910 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:14,914 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:40:14,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:40:14,915 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:40:14,915 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:40:14,915 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:40:14,916 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:40:14,922 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:40:14,922 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:40:15,011 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:40:15,073 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-15 23:40:15,073 INFO L444 ModelExtractionUtils]: 14 out of 22 variables were initially zero. Simplification set additionally 5 variables to zero. [2019-11-15 23:40:15,075 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:40:15,077 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-15 23:40:15,077 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:40:15,078 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2019-11-15 23:40:15,098 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-11-15 23:40:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:15,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:40:15,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:15,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:40:15,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:15,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:15,207 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:40:15,208 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2019-11-15 23:40:15,272 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 32 states and 44 transitions. Complement of second has 7 states. [2019-11-15 23:40:15,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:40:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:40:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2019-11-15 23:40:15,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-15 23:40:15,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:15,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 8 letters. Loop has 3 letters. [2019-11-15 23:40:15,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:15,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 6 letters. [2019-11-15 23:40:15,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:40:15,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 44 transitions. [2019-11-15 23:40:15,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:15,297 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 11 states and 15 transitions. [2019-11-15 23:40:15,298 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 23:40:15,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 23:40:15,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2019-11-15 23:40:15,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:40:15,302 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-15 23:40:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2019-11-15 23:40:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-15 23:40:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 23:40:15,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-11-15 23:40:15,333 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-15 23:40:15,333 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-15 23:40:15,334 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:40:15,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2019-11-15 23:40:15,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:15,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:15,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:15,337 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:40:15,337 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 23:40:15,337 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 109#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 110#L367 assume !(main_~length~0 < 1); 116#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 117#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 118#L370-3 assume !(main_~i~0 < main_~length~0); 113#L370-4 main_~j~0 := 1; 114#L377-2 [2019-11-15 23:40:15,338 INFO L793 eck$LassoCheckResult]: Loop: 114#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 114#L377-2 [2019-11-15 23:40:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:15,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2019-11-15 23:40:15,338 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:15,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503072399] [2019-11-15 23:40:15,339 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,339 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:15,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503072399] [2019-11-15 23:40:15,431 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:40:15,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:40:15,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15983843] [2019-11-15 23:40:15,435 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 23:40:15,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2019-11-15 23:40:15,435 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:15,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461279279] [2019-11-15 23:40:15,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:15,442 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:40:15,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636193764] [2019-11-15 23:40:15,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:40:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:15,520 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:15,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:40:15,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:40:15,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:40:15,576 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-15 23:40:15,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:40:15,629 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2019-11-15 23:40:15,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:40:15,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2019-11-15 23:40:15,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:15,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 17 transitions. [2019-11-15 23:40:15,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 23:40:15,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 23:40:15,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-11-15 23:40:15,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:40:15,637 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-15 23:40:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-11-15 23:40:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-11-15 23:40:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 23:40:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-11-15 23:40:15,639 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-15 23:40:15,639 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-11-15 23:40:15,639 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:40:15,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-11-15 23:40:15,640 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:15,640 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:15,640 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:15,641 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:40:15,641 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 23:40:15,642 INFO L791 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 140#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 141#L367 assume !(main_~length~0 < 1); 147#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 148#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 149#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 142#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 143#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 150#L370-3 assume !(main_~i~0 < main_~length~0); 144#L370-4 main_~j~0 := 1; 145#L377-2 [2019-11-15 23:40:15,642 INFO L793 eck$LassoCheckResult]: Loop: 145#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 145#L377-2 [2019-11-15 23:40:15,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:15,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2019-11-15 23:40:15,642 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:15,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917411898] [2019-11-15 23:40:15,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,643 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:15,670 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:15,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:15,670 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 2 times [2019-11-15 23:40:15,671 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:15,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22124352] [2019-11-15 23:40:15,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,671 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:15,674 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:40:15,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120334743] [2019-11-15 23:40:15,675 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:40:15,733 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-15 23:40:15,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-15 23:40:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:15,740 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1329989554, now seen corresponding path program 1 times [2019-11-15 23:40:15,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:15,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831866204] [2019-11-15 23:40:15,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:15,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:15,763 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:40:15,763 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677938857] [2019-11-15 23:40:15,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:40:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:40:15,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:40:15,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:40:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:40:15,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831866204] [2019-11-15 23:40:15,979 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-15 23:40:15,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677938857] [2019-11-15 23:40:15,979 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:40:15,979 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-15 23:40:15,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529208449] [2019-11-15 23:40:16,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:40:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:40:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:40:16,025 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 6 states. [2019-11-15 23:40:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:40:16,148 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2019-11-15 23:40:16,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:40:16,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2019-11-15 23:40:16,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:16,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 16 states and 20 transitions. [2019-11-15 23:40:16,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-15 23:40:16,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-15 23:40:16,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2019-11-15 23:40:16,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:40:16,152 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-15 23:40:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2019-11-15 23:40:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-15 23:40:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 23:40:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-11-15 23:40:16,155 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-15 23:40:16,155 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-11-15 23:40:16,155 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:40:16,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2019-11-15 23:40:16,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-15 23:40:16,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:40:16,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:40:16,157 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:40:16,157 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-15 23:40:16,157 INFO L791 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 222#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 223#L367 assume !(main_~length~0 < 1); 229#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 230#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 231#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 233#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 235#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 234#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 224#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 225#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 232#L370-3 assume !(main_~i~0 < main_~length~0); 226#L370-4 main_~j~0 := 1; 227#L377-2 [2019-11-15 23:40:16,160 INFO L793 eck$LassoCheckResult]: Loop: 227#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 227#L377-2 [2019-11-15 23:40:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:16,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1781949270, now seen corresponding path program 2 times [2019-11-15 23:40:16,161 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:16,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781658843] [2019-11-15 23:40:16,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:16,161 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:16,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:16,223 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:16,224 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 3 times [2019-11-15 23:40:16,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:16,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893744909] [2019-11-15 23:40:16,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:16,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:16,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:16,231 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:40:16,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112547413] [2019-11-15 23:40:16,232 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:40:16,279 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-15 23:40:16,280 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-15 23:40:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:16,287 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:40:16,288 INFO L82 PathProgramCache]: Analyzing trace with hash -594147436, now seen corresponding path program 2 times [2019-11-15 23:40:16,288 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:40:16,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417958449] [2019-11-15 23:40:16,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:16,289 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:40:16,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:40:16,307 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-15 23:40:16,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304233603] [2019-11-15 23:40:16,307 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:40:16,370 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 23:40:16,370 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-15 23:40:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:40:16,393 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:40:16,709 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2019-11-15 23:40:16,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:40:16 BoogieIcfgContainer [2019-11-15 23:40:16,825 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:40:16,826 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:40:16,826 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:40:16,826 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:40:16,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:40:13" (3/4) ... [2019-11-15 23:40:16,833 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-15 23:40:16,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_617e5f4c-f711-4e19-88f3-e020eb876fbb/bin/uautomizer/witness.graphml [2019-11-15 23:40:16,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:40:16,895 INFO L168 Benchmark]: Toolchain (without parser) took 4663.13 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 222.3 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -248.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:16,896 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:16,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:16,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:16,898 INFO L168 Benchmark]: Boogie Preprocessor took 45.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:40:16,898 INFO L168 Benchmark]: RCFGBuilder took 403.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:16,899 INFO L168 Benchmark]: BuchiAutomizer took 3407.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.2 MB). Peak memory consumption was 281.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:16,900 INFO L168 Benchmark]: Witness Printer took 67.98 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:40:16,907 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 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 668.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -186.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 403.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3407.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -101.2 MB). Peak memory consumption was 281.5 MB. Max. memory is 11.5 GB. * Witness Printer took 67.98 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 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 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 56 SDslu, 26 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital104 mio100 ax100 hnf99 lsp91 ukn82 mio100 lsp64 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 377]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=0} State at position 1 is {NULL=0, \result=0, NULL=0, arr=-1, arr=0, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54d22c12=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1df8e544=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a5eaad9=0, length=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@71f33139=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a5eaad9=-1, j=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@7f76f124=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@18b93e06=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i