./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c -s /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/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 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:21:51,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:21:51,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:21:51,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:21:51,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:21:51,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:21:51,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:21:51,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:21:51,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:21:51,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:21:51,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:21:51,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:21:51,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:21:51,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:21:51,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:21:51,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:21:51,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:21:51,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:21:51,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:21:51,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:21:51,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:21:51,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:21:51,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:21:51,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:21:51,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:21:51,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:21:51,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:21:51,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:21:51,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:21:51,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:21:51,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:21:51,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:21:51,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:21:51,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:21:51,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:21:51,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:21:51,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:21:51,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:21:51,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:21:51,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:21:51,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:21:51,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 18:21:51,207 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:21:51,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:21:51,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:21:51,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:21:51,209 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:21:51,209 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:21:51,209 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:21:51,209 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:21:51,209 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:21:51,209 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:21:51,209 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:21:51,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:21:51,209 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:21:51,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:21:51,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:21:51,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:21:51,211 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:21:51,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:21:51,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:21:51,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:21:51,211 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:21:51,212 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:21:51,212 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_04c9904a-03f4-4ab5-a507-464a3d91f5d2/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 -> 2e63fdedc7f36bfa4d0d39679a5a7ea76cc5ddf1 [2019-12-07 18:21:51,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:21:51,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:21:51,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:21:51,319 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:21:51,320 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:21:51,320 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2019-12-07 18:21:51,357 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/data/a09e954a7/d550b851da8d425eab01d1913c27f6c5/FLAG2f8c2209c [2019-12-07 18:21:51,706 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:21:51,706 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/sv-benchmarks/c/termination-restricted-15/MinusUserDefined.c [2019-12-07 18:21:51,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/data/a09e954a7/d550b851da8d425eab01d1913c27f6c5/FLAG2f8c2209c [2019-12-07 18:21:51,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/data/a09e954a7/d550b851da8d425eab01d1913c27f6c5 [2019-12-07 18:21:51,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:21:51,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:21:51,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:21:51,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:21:51,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:21:51,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bb0f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51, skipping insertion in model container [2019-12-07 18:21:51,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:21:51,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:21:51,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:21:51,839 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:21:51,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:21:51,890 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:21:51,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51 WrapperNode [2019-12-07 18:21:51,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:21:51,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:21:51,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:21:51,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:21:51,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:21:51,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:21:51,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:21:51,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:21:51,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... [2019-12-07 18:21:51,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:21:51,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:21:51,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:21:51,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:21:51,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/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 [2019-12-07 18:21:51,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:21:51,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:21:52,051 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:21:52,051 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 18:21:52,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:21:52 BoogieIcfgContainer [2019-12-07 18:21:52,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:21:52,052 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:21:52,052 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:21:52,055 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:21:52,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:21:52,055 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:21:51" (1/3) ... [2019-12-07 18:21:52,056 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29d0cdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:21:52, skipping insertion in model container [2019-12-07 18:21:52,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:21:52,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:21:51" (2/3) ... [2019-12-07 18:21:52,056 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29d0cdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:21:52, skipping insertion in model container [2019-12-07 18:21:52,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:21:52,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:21:52" (3/3) ... [2019-12-07 18:21:52,057 INFO L371 chiAutomizerObserver]: Analyzing ICFG MinusUserDefined.c [2019-12-07 18:21:52,086 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:21:52,087 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:21:52,087 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:21:52,087 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:21:52,087 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:21:52,087 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:21:52,087 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:21:52,087 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:21:52,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:21:52,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2019-12-07 18:21:52,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:21:52,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:21:52,112 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:21:52,112 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:21:52,112 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:21:52,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 18:21:52,113 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 3 [2019-12-07 18:21:52,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:21:52,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:21:52,113 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 18:21:52,114 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 18:21:52,118 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 4#L13-2true [2019-12-07 18:21:52,118 INFO L796 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 4#L13-2true [2019-12-07 18:21:52,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,122 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 18:21:52,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199486014] [2019-12-07 18:21:52,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,194 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:21:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,195 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-12-07 18:21:52,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694027984] [2019-12-07 18:21:52,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,204 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:21:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 18:21:52,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954908663] [2019-12-07 18:21:52,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,218 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:21:52,252 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:21:52,252 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:21:52,252 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:21:52,252 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:21:52,252 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:21:52,253 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,253 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:21:52,253 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:21:52,253 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2019-12-07 18:21:52,253 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:21:52,253 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:21:52,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,339 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:21:52,339 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/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 [2019-12-07 18:21:52,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:21:52,344 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/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 [2019-12-07 18:21:52,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:21:52,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:21:52,359 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:21:52,360 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:21:52,360 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:21:52,360 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:21:52,360 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:21:52,360 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:21:52,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:21:52,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:21:52,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration1_Loop [2019-12-07 18:21:52,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:21:52,360 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:21:52,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,417 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:21:52,420 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/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 [2019-12-07 18:21:52,424 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 [2019-12-07 18:21:52,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:21:52,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:21:52,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:21:52,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:21:52,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:21:52,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:21:52,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:21:52,431 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:21:52,436 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:21:52,437 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,440 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:21:52,441 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:21:52,441 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:21:52,442 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 18:21:52,445 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:21:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:52,467 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:21:52,468 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:21:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:52,474 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:21:52,475 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:21:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:21:52,485 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 18:21:52,486 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2019-12-07 18:21:52,520 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 23 states and 39 transitions. Complement of second has 5 states. [2019-12-07 18:21:52,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 18:21:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 18:21:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-12-07 18:21:52,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2019-12-07 18:21:52,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:52,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2019-12-07 18:21:52,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:52,525 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 18:21:52,525 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:52,526 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 39 transitions. [2019-12-07 18:21:52,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:21:52,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 9 states and 16 transitions. [2019-12-07 18:21:52,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 18:21:52,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 18:21:52,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 16 transitions. [2019-12-07 18:21:52,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:21:52,534 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 16 transitions. [2019-12-07 18:21:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 16 transitions. [2019-12-07 18:21:52,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-12-07 18:21:52,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 18:21:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2019-12-07 18:21:52,551 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2019-12-07 18:21:52,551 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 15 transitions. [2019-12-07 18:21:52,551 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:21:52,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 15 transitions. [2019-12-07 18:21:52,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:21:52,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:21:52,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:21:52,552 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:21:52,552 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:21:52,553 INFO L794 eck$LassoCheckResult]: Stem: 60#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 61#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2019-12-07 18:21:52,553 INFO L796 eck$LassoCheckResult]: Loop: 63#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 65#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 63#L21-3 [2019-12-07 18:21:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1000, now seen corresponding path program 1 times [2019-12-07 18:21:52,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529141463] [2019-12-07 18:21:52,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,561 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:21:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 1 times [2019-12-07 18:21:52,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186808534] [2019-12-07 18:21:52,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,569 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:21:52,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,570 INFO L82 PathProgramCache]: Analyzing trace with hash 961679, now seen corresponding path program 1 times [2019-12-07 18:21:52,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,570 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967103783] [2019-12-07 18:21:52,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,579 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:21:52,598 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:21:52,599 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:21:52,599 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:21:52,599 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:21:52,599 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:21:52,599 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,599 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:21:52,599 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:21:52,599 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2019-12-07 18:21:52,599 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:21:52,599 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:21:52,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,641 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:21:52,641 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:21:52,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:21:52,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:21:52,647 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:21:52,651 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:21:52,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:21:52,712 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:21:52,713 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:21:52,714 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:21:52,714 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:21:52,714 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:21:52,714 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:21:52,714 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,714 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:21:52,714 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:21:52,714 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration2_Loop [2019-12-07 18:21:52,714 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:21:52,714 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:21:52,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,762 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:21:52,762 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/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 [2019-12-07 18:21:52,766 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 [2019-12-07 18:21:52,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:21:52,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:21:52,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:21:52,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:21:52,769 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:21:52,770 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:21:52,772 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,776 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 [2019-12-07 18:21:52,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:21:52,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:21:52,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:21:52,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:21:52,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:21:52,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:21:52,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:21:52,781 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:21:52,784 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:21:52,785 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:21:52,787 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:21:52,787 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:21:52,787 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 18:21:52,789 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:21:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:52,805 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:21:52,805 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:21:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:52,810 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:21:52,810 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:21:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:21:52,826 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 [2019-12-07 18:21:52,826 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10 Second operand 3 states. [2019-12-07 18:21:52,842 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 15 transitions. cyclomatic complexity: 10. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 7 states. [2019-12-07 18:21:52,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:21:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:21:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 18:21:52,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 18:21:52,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:52,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 18:21:52,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:52,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 18:21:52,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:52,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2019-12-07 18:21:52,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:21:52,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 23 transitions. [2019-12-07 18:21:52,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 18:21:52,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 18:21:52,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 23 transitions. [2019-12-07 18:21:52,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:21:52,846 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-12-07 18:21:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 23 transitions. [2019-12-07 18:21:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 18:21:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 18:21:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2019-12-07 18:21:52,847 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-12-07 18:21:52,847 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-12-07 18:21:52,847 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:21:52,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2019-12-07 18:21:52,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:21:52,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:21:52,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:21:52,848 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-12-07 18:21:52,848 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 18:21:52,848 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~res~0;havoc main_~x~0;havoc main_~y~0;havoc main_~res~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~res~0 := 0; 127#L13-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 128#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 140#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 137#L21-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 135#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2019-12-07 18:21:52,848 INFO L796 eck$LassoCheckResult]: Loop: 130#L21-3 assume !!(main_~x~0 > 0);main_~y~0 := 1 + main_~y~0;main_~res~0 := 1 + main_~res~0; 131#L21-2 assume !(main_~x~0 > 0 && main_~y~0 > 0); 130#L21-3 [2019-12-07 18:21:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,849 INFO L82 PathProgramCache]: Analyzing trace with hash 924176399, now seen corresponding path program 1 times [2019-12-07 18:21:52,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82246165] [2019-12-07 18:21:52,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:21:52,885 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82246165] [2019-12-07 18:21:52,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:21:52,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:21:52,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038714513] [2019-12-07 18:21:52,888 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 18:21:52,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:52,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1640, now seen corresponding path program 2 times [2019-12-07 18:21:52,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:21:52,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036965584] [2019-12-07 18:21:52,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:21:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:21:52,894 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:21:52,917 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:21:52,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:21:52,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:21:52,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:21:52,918 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 18:21:52,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:21:52,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:21:52,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2019-12-07 18:21:52,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:21:52,918 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:21:52,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:52,975 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:21:52,975 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:21:52,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:21:52,983 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 18:21:52,983 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 18:21:52,987 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:52,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 18:21:52,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 18:21:53,049 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 18:21:53,050 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 18:21:53,050 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 18:21:53,050 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 18:21:53,050 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 18:21:53,051 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 18:21:53,051 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:53,051 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 18:21:53,051 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 18:21:53,051 INFO L133 ssoRankerPreferences]: Filename of dumped script: MinusUserDefined.c_Iteration3_Loop [2019-12-07 18:21:53,051 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 18:21:53,051 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 18:21:53,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:53,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:53,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:53,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:53,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 18:21:53,099 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 18:21:53,099 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:53,101 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 [2019-12-07 18:21:53,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:21:53,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:21:53,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:21:53,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:21:53,105 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 18:21:53,105 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 18:21:53,109 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:53,116 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 18:21:53,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 18:21:53,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 18:21:53,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 18:21:53,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 18:21:53,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 18:21:53,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 18:21:53,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 18:21:53,121 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 18:21:53,126 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 18:21:53,126 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04c9904a-03f4-4ab5-a507-464a3d91f5d2/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:21:53,128 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 18:21:53,129 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 18:21:53,129 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 18:21:53,129 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 18:21:53,130 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 18:21:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:21:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:53,145 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 18:21:53,145 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:21:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:21:53,149 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:21:53,149 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:21:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:21:53,159 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 [2019-12-07 18:21:53,159 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-12-07 18:21:53,177 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 43 states and 65 transitions. Complement of second has 7 states. [2019-12-07 18:21:53,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 18:21:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 18:21:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-12-07 18:21:53,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 18:21:53,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:53,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-12-07 18:21:53,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:53,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-12-07 18:21:53,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 18:21:53,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 65 transitions. [2019-12-07 18:21:53,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 18:21:53,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 30 states and 45 transitions. [2019-12-07 18:21:53,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 18:21:53,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 18:21:53,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 45 transitions. [2019-12-07 18:21:53,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 18:21:53,181 INFO L688 BuchiCegarLoop]: Abstraction has 30 states and 45 transitions. [2019-12-07 18:21:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 45 transitions. [2019-12-07 18:21:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2019-12-07 18:21:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 18:21:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2019-12-07 18:21:53,183 INFO L711 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-12-07 18:21:53,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:21:53,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:21:53,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:21:53,186 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 5 states. [2019-12-07 18:21:53,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:21:53,213 INFO L93 Difference]: Finished difference Result 13 states and 18 transitions. [2019-12-07 18:21:53,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:21:53,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2019-12-07 18:21:53,214 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:21:53,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2019-12-07 18:21:53,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:21:53,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:21:53,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:21:53,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:21:53,215 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:21:53,215 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:21:53,215 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:21:53,215 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 18:21:53,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:21:53,215 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:21:53,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:21:53,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:21:53 BoogieIcfgContainer [2019-12-07 18:21:53,220 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:21:53,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:21:53,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:21:53,220 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:21:53,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:21:52" (3/4) ... [2019-12-07 18:21:53,223 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:21:53,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:21:53,224 INFO L168 Benchmark]: Toolchain (without parser) took 1502.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.1 MB in the beginning and 857.3 MB in the end (delta: 86.7 MB). Peak memory consumption was 190.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:53,225 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:21:53,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:53,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:53,227 INFO L168 Benchmark]: Boogie Preprocessor took 12.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:53,227 INFO L168 Benchmark]: RCFGBuilder took 129.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:53,228 INFO L168 Benchmark]: BuchiAutomizer took 1167.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 858.4 MB in the end (delta: 225.7 MB). Peak memory consumption was 225.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:53,228 INFO L168 Benchmark]: Witness Printer took 2.69 ms. Allocated memory is still 1.1 GB. Free memory was 858.4 MB in the beginning and 857.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:21:53,231 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 129.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1167.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 858.4 MB in the end (delta: 225.7 MB). Peak memory consumption was 225.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.69 ms. Allocated memory is still 1.1 GB. Free memory was 858.4 MB in the beginning and 857.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. One deterministic module has affine ranking function -1 * y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...