./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex03.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/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 4c415167dfa4b02636468ff00722dddee0c99139 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-20 01:46:12,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:46:12,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:46:12,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:46:12,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:46:12,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:46:12,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:46:12,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:46:12,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:46:12,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:46:12,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:46:12,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:46:12,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:46:12,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:46:12,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:46:12,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:46:12,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:46:12,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:46:12,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:46:13,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:46:13,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:46:13,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:46:13,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:46:13,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:46:13,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:46:13,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:46:13,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:46:13,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:46:13,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:46:13,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:46:13,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:46:13,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:46:13,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:46:13,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:46:13,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:46:13,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:46:13,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:46:13,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:46:13,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:46:13,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:46:13,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:46:13,021 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 01:46:13,048 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:46:13,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:46:13,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:46:13,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:46:13,053 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:46:13,053 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 01:46:13,053 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 01:46:13,054 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 01:46:13,054 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 01:46:13,054 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 01:46:13,054 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 01:46:13,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:46:13,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:46:13,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:46:13,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 01:46:13,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:46:13,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:46:13,056 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 01:46:13,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:46:13,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:46:13,057 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 01:46:13,057 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 01:46:13,058 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_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/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 -> 4c415167dfa4b02636468ff00722dddee0c99139 [2019-11-20 01:46:13,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:46:13,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:46:13,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:46:13,207 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:46:13,213 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:46:13,213 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex03.c [2019-11-20 01:46:13,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/data/ff7da1513/3f720dfe39c840589bf2357bf4f8c480/FLAG8c7e12846 [2019-11-20 01:46:13,689 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:46:13,689 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/sv-benchmarks/c/termination-restricted-15/Ex03.c [2019-11-20 01:46:13,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/data/ff7da1513/3f720dfe39c840589bf2357bf4f8c480/FLAG8c7e12846 [2019-11-20 01:46:13,709 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/data/ff7da1513/3f720dfe39c840589bf2357bf4f8c480 [2019-11-20 01:46:13,711 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:46:13,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:46:13,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:46:13,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:46:13,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:46:13,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3c7c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13, skipping insertion in model container [2019-11-20 01:46:13,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,725 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:46:13,736 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:46:13,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:46:13,867 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:46:13,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:46:13,951 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:46:13,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13 WrapperNode [2019-11-20 01:46:13,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:46:13,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:46:13,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:46:13,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:46:13,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:46:13,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:46:13,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:46:13,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:46:13,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... [2019-11-20 01:46:13,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:46:13,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:46:13,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:46:13,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:46:13,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:46:14,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:46:14,198 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:46:14,198 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 01:46:14,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:46:14 BoogieIcfgContainer [2019-11-20 01:46:14,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:46:14,200 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 01:46:14,200 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 01:46:14,203 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 01:46:14,204 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:46:14,205 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 01:46:13" (1/3) ... [2019-11-20 01:46:14,207 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ff3fdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:46:14, skipping insertion in model container [2019-11-20 01:46:14,207 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:46:14,208 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:46:13" (2/3) ... [2019-11-20 01:46:14,209 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ff3fdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:46:14, skipping insertion in model container [2019-11-20 01:46:14,209 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:46:14,209 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:46:14" (3/3) ... [2019-11-20 01:46:14,211 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex03.c [2019-11-20 01:46:14,260 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 01:46:14,260 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 01:46:14,260 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 01:46:14,260 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:46:14,261 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:46:14,261 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 01:46:14,261 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:46:14,262 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 01:46:14,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-20 01:46:14,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 01:46:14,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:46:14,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:46:14,306 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:46:14,306 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 01:46:14,306 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 01:46:14,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-20 01:46:14,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 01:46:14,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:46:14,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:46:14,308 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:46:14,308 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 01:46:14,316 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L10-2true [2019-11-20 01:46:14,316 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 0); 4#L10true assume -5 != main_~i~0;main_~i~0 := 1 + main_~i~0; 8#L10-2true [2019-11-20 01:46:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:46:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 01:46:14,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:46:14,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428552800] [2019-11-20 01:46:14,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:46:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:14,399 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:46:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:46:14,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-20 01:46:14,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:46:14,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281663615] [2019-11-20 01:46:14,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:46:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:14,411 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:46:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:46:14,413 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-20 01:46:14,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:46:14,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798096081] [2019-11-20 01:46:14,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:46:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:14,422 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:46:14,494 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:46:14,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:46:14,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:46:14,495 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:46:14,495 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:46:14,495 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:14,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:46:14,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:46:14,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2019-11-20 01:46:14,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:46:14,496 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:46:14,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:46:14,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:46:14,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:46:14,725 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:46:14,726 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:14,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:46:14,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:46:14,749 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:46:14,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:14,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:46:14,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:46:14,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:46:14,761 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/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 [2019-11-20 01:46:14,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:46:14,767 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:46:14,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:46:14,792 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:14,814 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:46:14,816 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:46:14,816 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:46:14,816 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:46:14,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:46:14,816 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:46:14,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:14,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:46:14,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:46:14,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2019-11-20 01:46:14,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:46:14,817 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:46:14,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:46:14,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:46:14,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:46:14,962 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:46:14,967 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/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) [2019-11-20 01:46:14,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:46:14,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:46:14,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:46:14,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:46:14,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:46:14,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:46:14,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:14,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:46:15,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:46:15,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:46:15,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:46:15,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:46:15,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:46:15,010 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:46:15,010 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:15,015 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:46:15,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:15,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:46:15,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:46:15,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:46:15,028 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 01:46:15,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:46:15,031 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 01:46:15,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:46:15,035 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:46:15,040 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 01:46:15,041 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:46:15,045 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:46:15,046 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:46:15,046 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:46:15,046 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-20 01:46:15,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:46:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:46:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:46:15,098 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:46:15,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:46:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:46:15,106 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:46:15,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:46:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:46:15,136 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 01:46:15,137 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-20 01:46:15,185 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2019-11-20 01:46:15,186 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 [2019-11-20 01:46:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 01:46:15,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2019-11-20 01:46:15,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-20 01:46:15,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:46:15,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 01:46:15,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:46:15,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-20 01:46:15,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:46:15,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-11-20 01:46:15,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 01:46:15,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2019-11-20 01:46:15,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-20 01:46:15,198 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 01:46:15,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-11-20 01:46:15,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:46:15,199 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-11-20 01:46:15,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-11-20 01:46:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-20 01:46:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 01:46:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-20 01:46:15,223 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 01:46:15,223 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 01:46:15,223 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 01:46:15,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-20 01:46:15,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 01:46:15,224 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:46:15,224 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:46:15,224 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 01:46:15,225 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 01:46:15,225 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2019-11-20 01:46:15,225 INFO L796 eck$LassoCheckResult]: Loop: 63#L10 assume !(-5 != main_~i~0); 64#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2019-11-20 01:46:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:46:15,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 01:46:15,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:46:15,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545205607] [2019-11-20 01:46:15,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:46:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:15,231 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:46:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:46:15,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-11-20 01:46:15,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:46:15,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749906822] [2019-11-20 01:46:15,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:46:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:15,239 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:46:15,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:46:15,239 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-11-20 01:46:15,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:46:15,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987048206] [2019-11-20 01:46:15,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:46:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:46:15,246 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:46:15,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 01:46:15 BoogieIcfgContainer [2019-11-20 01:46:15,290 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 01:46:15,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:46:15,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:46:15,290 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:46:15,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:46:14" (3/4) ... [2019-11-20 01:46:15,293 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-20 01:46:15,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_508b7ee7-09f6-43ed-9eef-f4c4e7847d41/bin/uautomizer/witness.graphml [2019-11-20 01:46:15,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:46:15,323 INFO L168 Benchmark]: Toolchain (without parser) took 1610.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -109.4 MB). Peak memory consumption was 80.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:46:15,324 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:46:15,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -238.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 01:46:15,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:46:15,325 INFO L168 Benchmark]: Boogie Preprocessor took 16.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:46:15,325 INFO L168 Benchmark]: RCFGBuilder took 201.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:46:15,326 INFO L168 Benchmark]: BuchiAutomizer took 1089.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 115.1 MB). Peak memory consumption was 115.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:46:15,326 INFO L168 Benchmark]: Witness Printer took 31.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:46:15,329 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 239.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 189.8 MB). Free memory was 943.4 MB in the beginning and 1.2 GB in the end (delta: -238.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.76 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.90 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 201.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1089.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 115.1 MB). Peak memory consumption was 115.1 MB. Max. memory is 11.5 GB. * Witness Printer took 31.19 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf107 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq175 hnf96 smp100 dnf155 smp92 tf105 neg95 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34e79ab=0, \result=0, i=-5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i < 0 Loop: [L10] COND FALSE !(i != -5) [L9] COND TRUE i < 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...