./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:39:01,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:39:01,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:39:01,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:39:01,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:39:01,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:39:01,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:39:01,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:39:01,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:39:01,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:39:01,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:39:02,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:39:02,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:39:02,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:39:02,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:39:02,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:39:02,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:39:02,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:39:02,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:39:02,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:39:02,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:39:02,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:39:02,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:39:02,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:39:02,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:39:02,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:39:02,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:39:02,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:39:02,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:39:02,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:39:02,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:39:02,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:39:02,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:39:02,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:39:02,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:39:02,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:39:02,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:39:02,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:39:02,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:39:02,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:39:02,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:39:02,023 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:39:02,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:39:02,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:39:02,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:39:02,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:39:02,039 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:39:02,040 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:39:02,040 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:39:02,040 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:39:02,040 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:39:02,041 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:39:02,041 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:39:02,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:39:02,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:39:02,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:39:02,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:39:02,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:39:02,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:39:02,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:39:02,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:39:02,043 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:39:02,043 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:39:02,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:39:02,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:39:02,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:39:02,044 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:39:02,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:39:02,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:39:02,045 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:39:02,046 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:39:02,046 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_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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 -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2019-11-15 23:39:02,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:39:02,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:39:02,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:39:02,084 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:39:02,085 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:39:02,085 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-15 23:39:02,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/data/4487edf78/94d3e853101b4838adfde12a20a514e9/FLAG295bf5159 [2019-11-15 23:39:02,548 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:39:02,549 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-15 23:39:02,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/data/4487edf78/94d3e853101b4838adfde12a20a514e9/FLAG295bf5159 [2019-11-15 23:39:02,918 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/data/4487edf78/94d3e853101b4838adfde12a20a514e9 [2019-11-15 23:39:02,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:39:02,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:39:02,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:39:02,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:39:02,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:39:02,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:39:02" (1/1) ... [2019-11-15 23:39:02,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b554028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:02, skipping insertion in model container [2019-11-15 23:39:02,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:39:02" (1/1) ... [2019-11-15 23:39:02,936 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:39:02,950 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:39:03,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:39:03,079 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:39:03,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:39:03,173 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:39:03,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03 WrapperNode [2019-11-15 23:39:03,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:39:03,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:39:03,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:39:03,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:39:03,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:39:03,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:39:03,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:39:03,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:39:03,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... [2019-11-15 23:39:03,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:39:03,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:39:03,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:39:03,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:39:03,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:39:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:39:03,411 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:39:03,411 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-15 23:39:03,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:39:03 BoogieIcfgContainer [2019-11-15 23:39:03,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:39:03,413 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:39:03,413 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:39:03,416 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:39:03,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:39:03,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:39:02" (1/3) ... [2019-11-15 23:39:03,421 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75605daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:39:03, skipping insertion in model container [2019-11-15 23:39:03,422 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:39:03,422 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:39:03" (2/3) ... [2019-11-15 23:39:03,422 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75605daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:39:03, skipping insertion in model container [2019-11-15 23:39:03,423 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:39:03,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:39:03" (3/3) ... [2019-11-15 23:39:03,425 INFO L371 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2019-11-15 23:39:03,468 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:39:03,469 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:39:03,469 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:39:03,469 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:39:03,469 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:39:03,470 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:39:03,470 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:39:03,470 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:39:03,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-15 23:39:03,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:03,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:03,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:03,506 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:39:03,506 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:39:03,506 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:39:03,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-15 23:39:03,507 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:03,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:03,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:03,508 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-15 23:39:03,508 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:39:03,513 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2019-11-15 23:39:03,513 INFO L793 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 != main_~K~0); 7#L18true assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 5#L18-2true [2019-11-15 23:39:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:03,518 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-15 23:39:03,524 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:03,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610245791] [2019-11-15 23:39:03,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:03,525 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:03,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:03,599 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-15 23:39:03,600 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:03,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270346143] [2019-11-15 23:39:03,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:03,601 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:03,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:03,616 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:03,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:03,617 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-15 23:39:03,617 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:03,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616946771] [2019-11-15 23:39:03,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:03,618 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:03,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:03,629 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:03,680 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:03,681 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:03,681 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:03,681 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:03,681 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:39:03,682 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:03,682 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:03,682 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:03,682 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2019-11-15 23:39:03,682 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:03,683 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:03,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:03,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:03,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:03,845 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:03,845 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:03,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:03,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:39:03,860 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:03,861 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_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:03,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:03,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:39:03,879 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:03,879 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_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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) [2019-11-15 23:39:03,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:03,884 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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 [2019-11-15 23:39:03,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:39:03,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:39:04,083 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:39:04,085 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:04,085 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:04,085 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:04,085 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:04,085 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:39:04,085 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:04,085 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:04,085 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:04,086 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2019-11-15 23:39:04,086 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:04,086 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:04,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,165 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:04,170 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:39:04,171 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:04,173 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:04,173 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:39:04,174 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:04,175 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:04,175 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:04,178 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:39:04,178 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:39:04,202 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:39:04,210 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 23:39:04,211 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:39:04,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:39:04,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:39:04,213 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:39:04,213 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [2019-11-15 23:39:04,216 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:39:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:04,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:04,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:04,291 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:04,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:04,310 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 [2019-11-15 23:39:04,311 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-15 23:39:04,359 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-11-15 23:39:04,360 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 [2019-11-15 23:39:04,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:39:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-15 23:39:04,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-15 23:39:04,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:04,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 23:39:04,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:04,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-15 23:39:04,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:04,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-15 23:39:04,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:04,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-15 23:39:04,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-15 23:39:04,376 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-15 23:39:04,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-15 23:39:04,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:39:04,377 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:39:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-15 23:39:04,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-15 23:39:04,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-15 23:39:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-15 23:39:04,406 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:39:04,406 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-15 23:39:04,406 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:39:04,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-15 23:39:04,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:04,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:04,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:04,408 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 23:39:04,408 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:39:04,409 INFO L791 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 69#L18-2 assume !!(main_~x~0 != main_~K~0); 67#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 63#L18-2 [2019-11-15 23:39:04,409 INFO L793 eck$LassoCheckResult]: Loop: 63#L18-2 assume !!(main_~x~0 != main_~K~0); 64#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 63#L18-2 [2019-11-15 23:39:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:04,409 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-15 23:39:04,410 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:04,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636568378] [2019-11-15 23:39:04,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:04,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:04,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:04,438 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:04,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:04,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-15 23:39:04,439 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:04,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478358450] [2019-11-15 23:39:04,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:04,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:04,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:04,462 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:04,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:04,463 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-15 23:39:04,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:04,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472454572] [2019-11-15 23:39:04,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:04,463 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:04,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:04,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472454572] [2019-11-15 23:39:04,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24728206] [2019-11-15 23:39:04,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:39:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:04,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:04,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:04,570 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 23:39:04,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-15 23:39:04,570 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593168385] [2019-11-15 23:39:04,601 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:04,602 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:04,602 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:04,602 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:04,602 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:39:04,602 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:04,602 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:04,602 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:04,602 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2019-11-15 23:39:04,602 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:04,603 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:04,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,672 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:04,672 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:39:04,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:04,679 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:04,686 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:04,686 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_e41946c2-ea5a-4cde-aa89-d626e4c2775c/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-15 23:39:04,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:04,701 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:04,706 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:04,706 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_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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) [2019-11-15 23:39:04,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:04,718 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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 [2019-11-15 23:39:04,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:39:04,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:39:04,910 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:39:04,913 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:04,913 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:04,913 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:04,913 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:04,913 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:39:04,913 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:04,913 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:04,913 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:04,913 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2019-11-15 23:39:04,914 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:04,914 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:04,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:04,969 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:04,970 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:39:04,970 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:04,971 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:04,971 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:04,971 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:04,971 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:04,974 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:39:04,974 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:39:04,980 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:39:04,981 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:04,982 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:04,982 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:04,982 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:04,982 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:04,986 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:39:04,987 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:39:05,003 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:39:05,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:05,007 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:05,008 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:39:05,008 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:05,008 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:39:05,008 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:05,010 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:39:05,010 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:39:05,018 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:39:05,029 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-15 23:39:05,033 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-11-15 23:39:05,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:39:05,034 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:39:05,034 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:39:05,034 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [2019-11-15 23:39:05,035 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:39:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:05,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:05,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:05,061 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:05,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:05,062 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 [2019-11-15 23:39:05,062 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-15 23:39:05,078 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-15 23:39:05,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:39:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:39:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-15 23:39:05,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-15 23:39:05,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:05,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-15 23:39:05,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:05,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-15 23:39:05,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:05,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-15 23:39:05,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:05,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-15 23:39:05,082 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-15 23:39:05,082 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-15 23:39:05,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-15 23:39:05,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:39:05,082 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 23:39:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-15 23:39:05,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-15 23:39:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 23:39:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-15 23:39:05,084 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-15 23:39:05,084 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:39:05,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:39:05,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:39:05,088 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2019-11-15 23:39:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:39:05,116 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-11-15 23:39:05,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:39:05,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-11-15 23:39:05,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:05,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2019-11-15 23:39:05,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-15 23:39:05,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-15 23:39:05,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2019-11-15 23:39:05,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:39:05,119 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2019-11-15 23:39:05,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2019-11-15 23:39:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2019-11-15 23:39:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-15 23:39:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2019-11-15 23:39:05,120 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-15 23:39:05,120 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2019-11-15 23:39:05,120 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 23:39:05,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2019-11-15 23:39:05,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:05,121 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:05,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:05,121 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-15 23:39:05,121 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:39:05,122 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 158#L18-2 assume !!(main_~x~0 != main_~K~0); 154#L18 [2019-11-15 23:39:05,122 INFO L793 eck$LassoCheckResult]: Loop: 154#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 153#L18-2 assume !!(main_~x~0 != main_~K~0); 154#L18 [2019-11-15 23:39:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:05,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-15 23:39:05,122 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:05,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962005965] [2019-11-15 23:39:05,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:05,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:05,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:05,128 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:05,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:05,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-11-15 23:39:05,129 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:05,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352275040] [2019-11-15 23:39:05,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:05,129 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:05,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:05,135 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:05,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:05,135 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2019-11-15 23:39:05,136 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:05,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213959443] [2019-11-15 23:39:05,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:05,136 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:05,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:05,159 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:05,183 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:05,183 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:05,183 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:05,183 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:05,184 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:39:05,184 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:05,184 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:05,184 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:05,184 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2019-11-15 23:39:05,184 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:05,184 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:05,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:05,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:05,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:05,285 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:05,285 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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) [2019-11-15 23:39:05,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:05,295 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:05,302 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 23:39:05,302 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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) [2019-11-15 23:39:05,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:05,323 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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) [2019-11-15 23:39:05,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:39:05,351 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:07,368 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:39:07,370 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:07,370 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:07,370 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:07,371 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:07,371 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:39:07,371 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:07,371 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:07,371 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:07,371 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2019-11-15 23:39:07,371 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:07,371 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:07,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:07,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:07,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:07,482 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:07,483 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:39:07,483 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:07,484 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:07,484 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:39:07,484 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:07,484 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 23:39:07,484 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:07,486 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-15 23:39:07,486 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:39:07,495 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:39:07,500 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:39:07,500 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 23:39:07,501 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:39:07,501 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:39:07,501 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:39:07,502 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~K~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-15 23:39:07,502 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:39:07,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:07,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:07,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:07,545 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:07,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:07,562 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:39:07,562 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-15 23:39:07,573 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2019-11-15 23:39:07,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:39:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:39:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-15 23:39:07,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-15 23:39:07,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:07,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:39:07,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:07,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2019-11-15 23:39:07,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:07,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2019-11-15 23:39:07,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:07,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2019-11-15 23:39:07,577 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-15 23:39:07,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-15 23:39:07,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-11-15 23:39:07,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 23:39:07,577 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-15 23:39:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-11-15 23:39:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-11-15 23:39:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-15 23:39:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-15 23:39:07,579 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-15 23:39:07,579 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-15 23:39:07,579 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 23:39:07,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-15 23:39:07,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-15 23:39:07,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:39:07,580 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:39:07,580 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-11-15 23:39:07,580 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-15 23:39:07,580 INFO L791 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 203#L18-2 assume !!(main_~x~0 != main_~K~0); 204#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 205#L18-2 assume !!(main_~x~0 != main_~K~0); 206#L18 [2019-11-15 23:39:07,581 INFO L793 eck$LassoCheckResult]: Loop: 206#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := 1 + main_~x~0; 208#L18-2 assume !!(main_~x~0 != main_~K~0); 206#L18 [2019-11-15 23:39:07,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-11-15 23:39:07,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:07,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284597020] [2019-11-15 23:39:07,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:07,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:07,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:07,590 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:07,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-11-15 23:39:07,591 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:07,591 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014422084] [2019-11-15 23:39:07,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:07,591 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:07,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:39:07,597 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:39:07,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:07,597 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2019-11-15 23:39:07,598 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:39:07,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79697143] [2019-11-15 23:39:07,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:07,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:39:07,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:39:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:07,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79697143] [2019-11-15 23:39:07,637 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:39:07,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:39:07,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893300431] [2019-11-15 23:39:07,656 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:07,656 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:07,656 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:07,656 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:07,657 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 23:39:07,657 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:07,657 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:07,657 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:07,657 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2019-11-15 23:39:07,657 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:07,657 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:07,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:07,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:07,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:07,753 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:07,754 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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 [2019-11-15 23:39:07,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 23:39:07,763 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e41946c2-ea5a-4cde-aa89-d626e4c2775c/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 [2019-11-15 23:39:07,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 23:39:07,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 23:39:10,123 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 23:39:10,125 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:39:10,125 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:39:10,125 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:39:10,125 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:39:10,126 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:39:10,126 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:39:10,126 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:39:10,126 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:39:10,126 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2019-11-15 23:39:10,126 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:39:10,126 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:39:10,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:10,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:10,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:39:10,225 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:39:10,225 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:39:10,226 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-15 23:39:10,227 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:39:10,227 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:39:10,227 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:39:10,227 INFO L203 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-15 23:39:10,227 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:39:10,228 INFO L400 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-15 23:39:10,228 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:39:10,235 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:39:10,242 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 23:39:10,242 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 23:39:10,242 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:39:10,243 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 23:39:10,243 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:39:10,243 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~K~0 + 1 Supporting invariants [] [2019-11-15 23:39:10,243 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 23:39:10,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:10,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:10,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:10,278 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:10,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:10,299 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:39:10,299 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 23:39:10,304 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-11-15 23:39:10,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-15 23:39:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:39:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-15 23:39:10,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:39:10,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:10,305 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:39:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:10,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:10,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:10,350 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:10,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:10,375 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:39:10,375 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 23:39:10,380 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2019-11-15 23:39:10,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2019-11-15 23:39:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:39:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2019-11-15 23:39:10,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:39:10,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:10,381 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-15 23:39:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:39:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:10,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:39:10,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:39:10,420 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 23:39:10,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:39:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:39:10,442 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-15 23:39:10,442 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-15 23:39:10,453 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2019-11-15 23:39:10,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-15 23:39:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 23:39:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-15 23:39:10,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-15 23:39:10,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:10,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-15 23:39:10,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:10,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-15 23:39:10,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:39:10,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-11-15 23:39:10,458 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:39:10,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2019-11-15 23:39:10,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:39:10,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:39:10,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:39:10,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:39:10,459 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:10,459 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:10,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:39:10,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:39:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:39:10,459 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-11-15 23:39:10,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:39:10,460 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-15 23:39:10,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:39:10,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-15 23:39:10,460 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:39:10,460 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:39:10,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:39:10,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:39:10,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:39:10,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:39:10,461 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:10,461 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:10,461 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:39:10,461 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 23:39:10,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:39:10,461 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:39:10,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:39:10,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:39:10 BoogieIcfgContainer [2019-11-15 23:39:10,468 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:39:10,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:39:10,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:39:10,469 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:39:10,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:39:03" (3/4) ... [2019-11-15 23:39:10,472 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:39:10,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:39:10,474 INFO L168 Benchmark]: Toolchain (without parser) took 7551.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -194.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:10,474 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:10,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -214.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:10,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:10,476 INFO L168 Benchmark]: Boogie Preprocessor took 13.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:10,477 INFO L168 Benchmark]: RCFGBuilder took 188.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:10,477 INFO L168 Benchmark]: BuchiAutomizer took 7055.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:39:10,478 INFO L168 Benchmark]: Witness Printer took 3.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:39:10,481 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -214.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 188.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 7055.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x + -1 * K and consists of 4 locations. One deterministic module has affine ranking function x + -1 * K and consists of 3 locations. One deterministic module has affine ranking function 2 * K + -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 2 * K + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 6.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...