./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.14.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.14.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 95b7495f0c2baf7340e092922372d61d5e360ef5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:12:05,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:12:05,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:12:05,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:12:05,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:12:05,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:12:05,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:12:05,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:12:05,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:12:05,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:12:05,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:12:05,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:12:05,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:12:05,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:12:05,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:12:05,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:12:05,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:12:05,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:12:05,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:12:05,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:12:05,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:12:05,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:12:05,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:12:05,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:12:05,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:12:05,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:12:05,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:12:05,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:12:05,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:12:05,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:12:05,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:12:05,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:12:05,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:12:05,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:12:05,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:12:05,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:12:05,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:12:05,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:12:05,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:12:05,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:12:05,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:12:05,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:12:05,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:12:05,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:12:05,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:12:05,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:12:05,309 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:12:05,309 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:12:05,309 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:12:05,310 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:12:05,310 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:12:05,310 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:12:05,310 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:12:05,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:12:05,311 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:12:05,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:12:05,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:12:05,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:12:05,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:12:05,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:12:05,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:12:05,315 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:12:05,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:12:05,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:12:05,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:12:05,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:12:05,317 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:12:05,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:12:05,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:12:05,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:12:05,318 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:12:05,322 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:12:05,322 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95b7495f0c2baf7340e092922372d61d5e360ef5 [2020-11-29 23:12:05,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:12:05,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:12:05,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:12:05,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:12:05,620 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:12:05,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/b.14.c [2020-11-29 23:12:05,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/data/d1fc08338/600fcd70611248eb8d57955f5e7ad8b2/FLAG5f6aa47c4 [2020-11-29 23:12:06,195 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:12:06,196 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/sv-benchmarks/c/termination-restricted-15/b.14.c [2020-11-29 23:12:06,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/data/d1fc08338/600fcd70611248eb8d57955f5e7ad8b2/FLAG5f6aa47c4 [2020-11-29 23:12:06,688 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/bin/uautomizer/data/d1fc08338/600fcd70611248eb8d57955f5e7ad8b2 [2020-11-29 23:12:06,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:12:06,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:12:06,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:12:06,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:12:06,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:12:06,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52eaa04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06, skipping insertion in model container [2020-11-29 23:12:06,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:12:06,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:12:06,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:12:06,852 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:12:06,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:12:06,905 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:12:06,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06 WrapperNode [2020-11-29 23:12:06,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:12:06,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:12:06,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:12:06,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:12:06,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:12:06,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:12:06,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:12:06,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:12:06,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... [2020-11-29 23:12:06,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:12:06,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:12:06,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:12:06,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:12:06,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:12:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:12:07,155 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:12:07,155 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 23:12:07,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:07 BoogieIcfgContainer [2020-11-29 23:12:07,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:12:07,158 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:12:07,158 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:12:07,166 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:12:07,167 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:12:07,167 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:12:06" (1/3) ... [2020-11-29 23:12:07,170 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2952e490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:12:07, skipping insertion in model container [2020-11-29 23:12:07,171 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:12:07,171 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:06" (2/3) ... [2020-11-29 23:12:07,171 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2952e490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:12:07, skipping insertion in model container [2020-11-29 23:12:07,171 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:12:07,171 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:07" (3/3) ... [2020-11-29 23:12:07,173 INFO L373 chiAutomizerObserver]: Analyzing ICFG b.14.c [2020-11-29 23:12:07,231 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:12:07,231 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:12:07,231 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:12:07,231 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:12:07,231 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:12:07,232 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:12:07,232 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:12:07,232 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:12:07,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 23:12:07,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:12:07,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:12:07,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:12:07,266 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:12:07,266 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:12:07,267 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:12:07,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 23:12:07,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 23:12:07,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:12:07,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:12:07,268 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:12:07,269 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 23:12:07,275 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L12-3true [2020-11-29 23:12:07,276 INFO L796 eck$LassoCheckResult]: Loop: 8#L12-3true assume !!(main_~x~0 == main_~y~0 && main_~x~0 > 0); 3#L12-2true assume !(main_~y~0 > 0); 8#L12-3true [2020-11-29 23:12:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:07,282 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 23:12:07,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:07,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943137248] [2020-11-29 23:12:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,372 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:12:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:07,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1288, now seen corresponding path program 1 times [2020-11-29 23:12:07,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:07,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289696670] [2020-11-29 23:12:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:12:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:12:07,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289696670] [2020-11-29 23:12:07,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:12:07,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 23:12:07,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515518454] [2020-11-29 23:12:07,551 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:12:07,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:12:07,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:12:07,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:12:07,580 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2020-11-29 23:12:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:12:07,608 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2020-11-29 23:12:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:12:07,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2020-11-29 23:12:07,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:12:07,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 4 states and 5 transitions. [2020-11-29 23:12:07,615 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 23:12:07,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 23:12:07,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 5 transitions. [2020-11-29 23:12:07,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:12:07,616 INFO L691 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-11-29 23:12:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 5 transitions. [2020-11-29 23:12:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2020-11-29 23:12:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 23:12:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2020-11-29 23:12:07,643 INFO L714 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-11-29 23:12:07,643 INFO L594 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2020-11-29 23:12:07,644 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:12:07,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. [2020-11-29 23:12:07,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 23:12:07,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:12:07,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:12:07,645 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 23:12:07,645 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 23:12:07,646 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 27#L12-3 [2020-11-29 23:12:07,646 INFO L796 eck$LassoCheckResult]: Loop: 27#L12-3 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > 0); 24#L12-2 assume !!(main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1;main_~c~0 := 1 + main_~c~0; 25#L12-2 assume !(main_~y~0 > 0); 27#L12-3 [2020-11-29 23:12:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:07,648 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-29 23:12:07,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:07,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117173164] [2020-11-29 23:12:07,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,667 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,681 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:12:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:07,683 INFO L82 PathProgramCache]: Analyzing trace with hash 40007, now seen corresponding path program 1 times [2020-11-29 23:12:07,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:07,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073976279] [2020-11-29 23:12:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,710 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:12:07,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:07,711 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2020-11-29 23:12:07,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:12:07,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535725049] [2020-11-29 23:12:07,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:12:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:12:07,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:12:07,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:12:07,864 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:12:07,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:12:07,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:12:07,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:12:07,865 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 23:12:07,866 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:12:07,866 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:12:07,866 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:12:07,866 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration2_Loop [2020-11-29 23:12:07,866 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:12:07,867 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:12:07,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:07,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:07,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:07,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:08,027 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:12:08,028 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:08,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:12:08,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:12:08,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:12:08,042 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_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:08,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:12:08,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:12:08,086 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:12:08,086 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_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:08,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:12:08,125 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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) [2020-11-29 23:12:08,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:12:08,173 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 [2020-11-29 23:12:08,192 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 23:12:08,192 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=3}, {ULTIMATE.start_main_~c~0=3}, {ULTIMATE.start_main_~c~0=-5}] Lambdas: [0, 1, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:08,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 23:12:08,227 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:08,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 23:12:08,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 23:12:08,291 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 23:12:08,293 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 23:12:08,293 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 23:12:08,293 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 23:12:08,293 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 23:12:08,293 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 23:12:08,293 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:12:08,293 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 23:12:08,293 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 23:12:08,293 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.14.c_Iteration2_Loop [2020-11-29 23:12:08,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 23:12:08,293 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 23:12:08,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:08,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:08,314 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:08,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 23:12:08,479 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 23:12:08,484 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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) [2020-11-29 23:12:08,491 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 [2020-11-29 23:12:08,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:12:08,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:12:08,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:12:08,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:12:08,502 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:12:08,502 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:12:08,509 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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) [2020-11-29 23:12:08,553 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 [2020-11-29 23:12:08,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:12:08,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:12:08,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:12:08,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:12:08,562 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 23:12:08,562 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:12:08,567 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:08,610 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 [2020-11-29 23:12:08,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:12:08,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:12:08,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:12:08,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:12:08,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:12:08,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:12:08,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:12:08,616 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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 [2020-11-29 23:12:08,641 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 [2020-11-29 23:12:08,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 23:12:08,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 23:12:08,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 23:12:08,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 23:12:08,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 23:12:08,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 23:12:08,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 23:12:08,653 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 23:12:08,662 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 23:12:08,662 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec3cca7c-5bab-4eb6-a8a3-97bb84434cad/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) [2020-11-29 23:12:08,670 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 23:12:08,670 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 23:12:08,670 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 23:12:08,671 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:12:08,704 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 23:12:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:12:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:12:08,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 23:12:08,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:12:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:12:08,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:12:08,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:12:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:12:08,836 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 [2020-11-29 23:12:08,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2 Second operand 4 states. [2020-11-29 23:12:08,887 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 8 states and 9 transitions. Complement of second has 6 states. [2020-11-29 23:12:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 23:12:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 23:12:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2020-11-29 23:12:08,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 23:12:08,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:12:08,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 23:12:08,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:12:08,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 23:12:08,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 23:12:08,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2020-11-29 23:12:08,892 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:12:08,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-11-29 23:12:08,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:12:08,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:12:08,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:12:08,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:12:08,893 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:12:08,893 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:12:08,893 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:12:08,893 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 23:12:08,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:12:08,893 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:12:08,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:12:08,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:12:08 BoogieIcfgContainer [2020-11-29 23:12:08,899 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:12:08,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:12:08,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:12:08,899 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:12:08,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:07" (3/4) ... [2020-11-29 23:12:08,902 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:12:08,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:12:08,904 INFO L168 Benchmark]: Toolchain (without parser) took 2207.74 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 72.5 MB in the beginning and 79.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:08,904 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:12:08,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.37 ms. Allocated memory is still 102.8 MB. Free memory was 72.2 MB in the beginning and 81.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:08,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.67 ms. Allocated memory is still 102.8 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:12:08,906 INFO L168 Benchmark]: Boogie Preprocessor took 17.67 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.6 MB in the end (delta: 840.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:12:08,907 INFO L168 Benchmark]: RCFGBuilder took 202.86 ms. Allocated memory is still 102.8 MB. Free memory was 78.6 MB in the beginning and 70.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:08,908 INFO L168 Benchmark]: BuchiAutomizer took 1740.81 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 79.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:12:08,908 INFO L168 Benchmark]: Witness Printer took 3.14 ms. Allocated memory is still 123.7 MB. Free memory is still 79.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:12:08,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 41.1 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 207.37 ms. Allocated memory is still 102.8 MB. Free memory was 72.2 MB in the beginning and 81.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.67 ms. Allocated memory is still 102.8 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.67 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.6 MB in the end (delta: 840.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 202.86 ms. Allocated memory is still 102.8 MB. Free memory was 78.6 MB in the beginning and 70.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1740.81 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 70.2 MB in the beginning and 79.7 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.14 ms. Allocated memory is still 123.7 MB. Free memory is still 79.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 4 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 3 SDs, 0 SdLazy, 11 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital27 mio100 ax144 hnf97 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf91 smp76 dnf100 smp100 tf107 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 1 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...