./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Parallel.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_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Parallel.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 fa16f28cdab01c0d49bf2bd46e148912a30ce280 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:40:18,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:40:18,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:40:18,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:40:18,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:40:18,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:40:18,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:40:18,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:40:18,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:40:18,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:40:18,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:40:18,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:40:18,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:40:18,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:40:18,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:40:18,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:40:18,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:40:18,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:40:18,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:40:18,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:40:18,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:40:18,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:40:18,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:40:18,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:40:18,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:40:18,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:40:18,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:40:18,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:40:18,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:40:18,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:40:18,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:40:18,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:40:18,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:40:18,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:40:18,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:40:18,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:40:18,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:40:18,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:40:18,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:40:18,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:40:18,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:40:18,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 11:40:18,416 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:40:18,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:40:18,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:40:18,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:40:18,417 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:40:18,417 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 11:40:18,417 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 11:40:18,418 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 11:40:18,418 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 11:40:18,418 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 11:40:18,418 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 11:40:18,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:40:18,418 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 11:40:18,419 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:40:18,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 11:40:18,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:40:18,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:40:18,420 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 11:40:18,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:40:18,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:40:18,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:40:18,420 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 11:40:18,421 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 11:40:18,421 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_e05a9ace-76d4-4284-8782-07f423c4e49b/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 -> fa16f28cdab01c0d49bf2bd46e148912a30ce280 [2019-12-07 11:40:18,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:40:18,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:40:18,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:40:18,535 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:40:18,535 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:40:18,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Parallel.c [2019-12-07 11:40:18,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/data/e9ca8320d/133bda0d16304a6481feb110ee5d2adc/FLAGb3b5e1649 [2019-12-07 11:40:18,992 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:40:18,993 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/sv-benchmarks/c/termination-crafted/Parallel.c [2019-12-07 11:40:18,996 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/data/e9ca8320d/133bda0d16304a6481feb110ee5d2adc/FLAGb3b5e1649 [2019-12-07 11:40:19,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/bin/uautomizer/data/e9ca8320d/133bda0d16304a6481feb110ee5d2adc [2019-12-07 11:40:19,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:40:19,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:40:19,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:40:19,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:40:19,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:40:19,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbd2b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19, skipping insertion in model container [2019-12-07 11:40:19,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:40:19,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:40:19,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:40:19,128 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:40:19,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:40:19,180 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:40:19,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19 WrapperNode [2019-12-07 11:40:19,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:40:19,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:40:19,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:40:19,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:40:19,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:40:19,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:40:19,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:40:19,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:40:19,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... [2019-12-07 11:40:19,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:40:19,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:40:19,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:40:19,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:40:19,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:40:19,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:40:19,339 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:40:19,339 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 11:40:19,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:40:19 BoogieIcfgContainer [2019-12-07 11:40:19,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:40:19,340 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 11:40:19,340 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 11:40:19,342 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 11:40:19,343 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:40:19,343 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 11:40:19" (1/3) ... [2019-12-07 11:40:19,344 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e6ccd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:40:19, skipping insertion in model container [2019-12-07 11:40:19,344 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:40:19,344 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:40:19" (2/3) ... [2019-12-07 11:40:19,344 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4e6ccd03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:40:19, skipping insertion in model container [2019-12-07 11:40:19,344 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:40:19,344 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:40:19" (3/3) ... [2019-12-07 11:40:19,345 INFO L371 chiAutomizerObserver]: Analyzing ICFG Parallel.c [2019-12-07 11:40:19,373 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 11:40:19,374 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 11:40:19,374 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 11:40:19,374 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:40:19,374 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:40:19,374 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 11:40:19,374 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:40:19,374 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 11:40:19,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 11:40:19,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:40:19,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:40:19,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:40:19,399 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 11:40:19,399 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:40:19,399 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 11:40:19,399 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 11:40:19,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:40:19,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:40:19,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:40:19,400 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 11:40:19,400 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:40:19,405 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L23-2true [2019-12-07 11:40:19,405 INFO L796 eck$LassoCheckResult]: Loop: 3#L23-2true assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 5#L23true assume main_~x~0 >= 0;main_~x~0 := main_~x~0 - 1; 3#L23-2true [2019-12-07 11:40:19,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:19,409 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 11:40:19,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:19,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961018911] [2019-12-07 11:40:19,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,476 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:40:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:19,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 11:40:19,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:19,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430747979] [2019-12-07 11:40:19,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,487 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:40:19,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:19,488 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 11:40:19,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:19,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728730111] [2019-12-07 11:40:19,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,496 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:40:19,534 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:40:19,535 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:40:19,535 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:40:19,535 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:40:19,535 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:40:19,535 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:40:19,535 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:40:19,535 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:40:19,535 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration1_Loop [2019-12-07 11:40:19,535 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:40:19,535 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:40:19,550 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 11:40:19,557 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 11:40:19,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:40:19,612 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:40:19,612 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:40:19,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:40:19,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:40:19,626 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_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:40:19,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:40:19,635 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:40:19,635 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_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:40:19,639 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:40:19,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:40:19,652 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:40:19,653 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:40:19,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:40:19,654 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:40:19,654 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:40:19,654 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:40:19,654 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:40:19,654 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:40:19,654 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:40:19,654 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration1_Loop [2019-12-07 11:40:19,654 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:40:19,654 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:40:19,655 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 11:40:19,659 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 11:40:19,663 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 11:40:19,696 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:40:19,699 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,703 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 11:40:19,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:40:19,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:40:19,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:40:19,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:40:19,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:40:19,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:40:19,716 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,720 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 11:40:19,721 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:40:19,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:40:19,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:40:19,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:40:19,724 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:40:19,724 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:40:19,729 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,733 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 11:40:19,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:40:19,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:40:19,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:40:19,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:40:19,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:40:19,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:40:19,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:40:19,740 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:40:19,744 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 11:40:19,744 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,748 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:40:19,748 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:40:19,748 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:40:19,749 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-12-07 11:40:19,752 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:40:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:19,780 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:40:19,781 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:40:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:19,787 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:40:19,788 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:40:19,790 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 11:40:19,800 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 11:40:19,801 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-12-07 11:40:19,830 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2019-12-07 11:40:19,830 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 11:40:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:40:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 11:40:19,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 11:40:19,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:40:19,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 11:40:19,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:40:19,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 11:40:19,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:40:19,834 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 30 transitions. [2019-12-07 11:40:19,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:40:19,838 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 8 states and 11 transitions. [2019-12-07 11:40:19,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 11:40:19,839 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 11:40:19,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 11:40:19,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 11:40:19,840 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 11:40:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 11:40:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 11:40:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 11:40:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 11:40:19,856 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 11:40:19,856 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 11:40:19,856 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 11:40:19,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 11:40:19,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 11:40:19,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:40:19,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:40:19,857 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 11:40:19,857 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 11:40:19,857 INFO L794 eck$LassoCheckResult]: Stem: 64#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 65#L23-2 assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 61#L23 [2019-12-07 11:40:19,857 INFO L796 eck$LassoCheckResult]: Loop: 61#L23 assume !(main_~x~0 >= 0);main_~y~0 := main_~y~0 - 1; 60#L23-2 assume !!(main_~x~0 >= 0 || main_~y~0 >= 0); 61#L23 [2019-12-07 11:40:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 11:40:19,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:19,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878456045] [2019-12-07 11:40:19,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,864 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:40:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:19,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-12-07 11:40:19,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:19,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157902166] [2019-12-07 11:40:19,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,870 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:40:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:19,870 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-12-07 11:40:19,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:40:19,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570411970] [2019-12-07 11:40:19,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:40:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:40:19,877 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:40:19,893 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:40:19,893 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:40:19,893 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:40:19,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:40:19,894 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 11:40:19,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:40:19,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:40:19,894 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:40:19,894 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration2_Loop [2019-12-07 11:40:19,894 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:40:19,894 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:40:19,895 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 11:40:19,897 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 11:40:19,899 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 11:40:19,903 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 11:40:19,935 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:40:19,935 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:40:19,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:40:19,942 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:40:19,942 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_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:40:19,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:40:19,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 11:40:19,949 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 11:40:19,954 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:19,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 11:40:19,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 11:40:19,987 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 11:40:19,988 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:40:19,989 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:40:19,989 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:40:19,989 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:40:19,989 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:40:19,989 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:40:19,989 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:40:19,989 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:40:19,989 INFO L133 ssoRankerPreferences]: Filename of dumped script: Parallel.c_Iteration2_Loop [2019-12-07 11:40:19,989 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:40:19,989 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:40:19,990 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 11:40:19,992 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 11:40:19,994 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 11:40:19,998 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 11:40:20,024 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:40:20,024 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:20,027 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 11:40:20,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:40:20,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:40:20,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:40:20,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:40:20,032 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:40:20,032 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:40:20,036 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:20,041 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 11:40:20,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:40:20,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:40:20,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:40:20,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:40:20,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:40:20,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:40:20,048 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:20,053 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 11:40:20,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:40:20,054 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:40:20,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:40:20,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:40:20,055 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:40:20,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:40:20,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:40:20,058 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:40:20,061 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 11:40:20,061 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e05a9ace-76d4-4284-8782-07f423c4e49b/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 11:40:20,064 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:40:20,064 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 11:40:20,064 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:40:20,065 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 11:40:20,066 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 11:40:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:40:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:20,084 INFO L264 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:40:20,085 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:40:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:40:20,087 WARN L262 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:40:20,088 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:40:20,105 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 11:40:20,105 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 11:40:20,106 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 11:40:20,120 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 6 states. [2019-12-07 11:40:20,121 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 11:40:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:40:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2019-12-07 11:40:20,121 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 11:40:20,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:40:20,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 11:40:20,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:40:20,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 11:40:20,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:40:20,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2019-12-07 11:40:20,123 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:40:20,123 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2019-12-07 11:40:20,123 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 11:40:20,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 11:40:20,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 11:40:20,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:40:20,123 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:40:20,123 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:40:20,124 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:40:20,124 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 11:40:20,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:40:20,124 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 11:40:20,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 11:40:20,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 11:40:20 BoogieIcfgContainer [2019-12-07 11:40:20,128 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 11:40:20,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:40:20,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:40:20,129 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:40:20,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:40:19" (3/4) ... [2019-12-07 11:40:20,131 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 11:40:20,131 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:40:20,133 INFO L168 Benchmark]: Toolchain (without parser) took 1122.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 938.1 MB in the beginning and 920.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 114.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:40:20,133 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:40:20,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:40:20,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:40:20,134 INFO L168 Benchmark]: Boogie Preprocessor took 15.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:40:20,135 INFO L168 Benchmark]: RCFGBuilder took 121.57 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:40:20,135 INFO L168 Benchmark]: BuchiAutomizer took 787.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 920.1 MB in the end (delta: 154.6 MB). Peak memory consumption was 154.6 MB. Max. memory is 11.5 GB. [2019-12-07 11:40:20,136 INFO L168 Benchmark]: Witness Printer took 2.89 ms. Allocated memory is still 1.1 GB. Free memory is still 920.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:40:20,138 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -153.2 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.38 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 121.57 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 787.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 920.1 MB in the end (delta: 154.6 MB). Peak memory consumption was 154.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.89 ms. Allocated memory is still 1.1 GB. Free memory is still 920.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 4 SDs, 0 SdLazy, 13 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...