./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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 a5e4c58569d8caa47946d30f6cb501096837aef1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:12,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:12,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:12,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:12,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:12,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:12,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:12,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:12,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:12,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:12,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:12,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:12,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:12,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:12,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:12,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:12,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:12,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:12,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:12,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:12,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:12,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:12,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:12,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:12,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:12,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:12,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:12,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:12,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:12,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:12,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:12,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:12,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:12,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:12,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:12,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:12,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:12,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:12,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:12,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:12,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:12,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:46:12,125 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:12,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:12,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:12,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:12,127 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:12,127 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:46:12,127 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:46:12,127 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:46:12,128 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:46:12,128 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:46:12,128 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:46:12,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:12,128 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:46:12,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:12,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:12,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:46:12,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:46:12,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:46:12,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:12,130 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:46:12,130 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:12,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:46:12,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:12,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:12,130 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:46:12,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:12,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:12,131 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:46:12,132 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:46:12,132 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_79ee085f-3a22-4f74-b833-59a0270d47cf/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 -> a5e4c58569d8caa47946d30f6cb501096837aef1 [2019-11-25 08:46:12,262 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:12,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:12,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:12,276 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:12,276 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:12,277 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2019-11-25 08:46:12,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/data/db19ef031/58b63b82fcc94532ae471d0a4544191b/FLAGf1a8e24e0 [2019-11-25 08:46:12,758 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:12,758 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2019-11-25 08:46:12,764 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/data/db19ef031/58b63b82fcc94532ae471d0a4544191b/FLAGf1a8e24e0 [2019-11-25 08:46:12,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/data/db19ef031/58b63b82fcc94532ae471d0a4544191b [2019-11-25 08:46:12,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:12,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:12,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:12,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:12,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:12,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264296e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:12, skipping insertion in model container [2019-11-25 08:46:12,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:12" (1/1) ... [2019-11-25 08:46:12,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:12,826 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:13,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:13,010 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:13,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:13,097 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:13,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13 WrapperNode [2019-11-25 08:46:13,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:13,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:13,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:13,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:13,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:13,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:13,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:13,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:13,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... [2019-11-25 08:46:13,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:13,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:13,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:13,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:13,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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 [2019-11-25 08:46:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:13,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:13,361 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:13,361 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:46:13,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:13 BoogieIcfgContainer [2019-11-25 08:46:13,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:13,363 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:46:13,363 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:46:13,366 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:46:13,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:13,367 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:46:12" (1/3) ... [2019-11-25 08:46:13,368 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@176a58f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:46:13, skipping insertion in model container [2019-11-25 08:46:13,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:13,368 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:13" (2/3) ... [2019-11-25 08:46:13,368 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@176a58f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:46:13, skipping insertion in model container [2019-11-25 08:46:13,368 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:46:13,368 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:13" (3/3) ... [2019-11-25 08:46:13,369 INFO L371 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2019-11-25 08:46:13,419 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:46:13,419 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:46:13,419 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:46:13,419 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:13,420 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:13,420 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:46:13,420 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:13,421 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:46:13,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-25 08:46:13,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:46:13,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:13,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:13,461 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:46:13,461 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:13,461 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:46:13,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-25 08:46:13,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:46:13,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:13,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:13,463 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:46:13,463 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:13,470 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 3#L12-2true [2019-11-25 08:46:13,471 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~c~0 > 0); 6#L12true assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 3#L12-2true [2019-11-25 08:46:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:46:13,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:13,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088596603] [2019-11-25 08:46:13,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,563 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-25 08:46:13,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:13,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531652827] [2019-11-25 08:46:13,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,578 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:13,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:13,579 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-25 08:46:13,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:13,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101357659] [2019-11-25 08:46:13,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:13,591 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:13,678 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:13,679 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:13,680 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:13,680 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:13,680 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:13,680 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:13,680 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:13,680 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:13,680 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2019-11-25 08:46:13,681 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:13,681 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:13,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:13,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:13,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:13,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:13,854 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:13,854 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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 [2019-11-25 08:46:13,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:13,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:13,868 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:13,868 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_79ee085f-3a22-4f74-b833-59a0270d47cf/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 [2019-11-25 08:46:13,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:13,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:13,883 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:13,884 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_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:13,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:13,889 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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 [2019-11-25 08:46:13,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:13,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:13,904 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:13,906 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:13,906 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:13,906 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:13,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:13,907 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:13,907 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:13,907 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:13,907 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:13,907 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2019-11-25 08:46:13,907 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:13,907 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:13,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:13,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:13,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:13,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:14,035 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:14,055 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 [2019-11-25 08:46:14,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:14,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:14,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:14,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:14,069 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:14,069 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,075 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,089 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 [2019-11-25 08:46:14,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:14,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:14,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:14,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:14,096 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:14,096 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:46:14,101 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,110 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 [2019-11-25 08:46:14,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:14,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:14,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:14,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:14,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:14,118 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:14,118 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:14,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:14,130 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:46:14,130 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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) [2019-11-25 08:46:14,142 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:14,143 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:14,143 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,143 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:46:14,148 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:46:14,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:14,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:14,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:14,223 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:14,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:14,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:14,240 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 [2019-11-25 08:46:14,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-25 08:46:14,272 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. [2019-11-25 08:46:14,273 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 [2019-11-25 08:46:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-25 08:46:14,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-25 08:46:14,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:14,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-25 08:46:14,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:14,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:46:14,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:14,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-25 08:46:14,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:46:14,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-25 08:46:14,290 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-25 08:46:14,291 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-25 08:46:14,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-25 08:46:14,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:14,292 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:46:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-25 08:46:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-25 08:46:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-25 08:46:14,316 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:46:14,316 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:46:14,316 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:46:14,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-25 08:46:14,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:46:14,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:14,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:14,318 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-25 08:46:14,318 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:14,318 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 69#L12-2 assume !!(main_~c~0 > 0); 67#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 63#L12-2 [2019-11-25 08:46:14,318 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!(main_~c~0 > 0); 64#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 63#L12-2 [2019-11-25 08:46:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-25 08:46:14,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:14,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549538635] [2019-11-25 08:46:14,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,342 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:14,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-25 08:46:14,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:14,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561274002] [2019-11-25 08:46:14,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,358 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:14,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,359 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-25 08:46:14,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:14,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132435516] [2019-11-25 08:46:14,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,370 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:14,390 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:14,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:14,390 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:14,390 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:14,390 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:14,391 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,391 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:14,391 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:14,391 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2019-11-25 08:46:14,391 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:14,391 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:14,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,474 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:14,474 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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) [2019-11-25 08:46:14,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:14,487 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,492 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:14,492 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_79ee085f-3a22-4f74-b833-59a0270d47cf/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) [2019-11-25 08:46:14,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:14,507 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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) [2019-11-25 08:46:14,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:14,536 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,545 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:14,548 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:14,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:14,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:14,548 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:14,548 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:14,548 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,548 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:14,549 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:14,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2019-11-25 08:46:14,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:14,549 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:14,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,630 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:14,630 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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) [2019-11-25 08:46:14,648 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 [2019-11-25 08:46:14,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:14,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:14,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:14,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:14,658 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:14,659 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,664 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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) [2019-11-25 08:46:14,679 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 [2019-11-25 08:46:14,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:14,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:14,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:14,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:14,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:14,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:14,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,698 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:14,701 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:14,701 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/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 [2019-11-25 08:46:14,713 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:14,713 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:14,713 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:14,714 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-11-25 08:46:14,716 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:46:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:14,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:14,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:14,748 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:14,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:14,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:14,762 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 [2019-11-25 08:46:14,762 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-25 08:46:14,776 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. [2019-11-25 08:46:14,777 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 [2019-11-25 08:46:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-25 08:46:14,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-25 08:46:14,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:14,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-25 08:46:14,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:14,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-25 08:46:14,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:14,779 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-25 08:46:14,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:46:14,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-25 08:46:14,781 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-25 08:46:14,781 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:46:14,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-25 08:46:14,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:14,782 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-25 08:46:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-25 08:46:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-25 08:46:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:46:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-25 08:46:14,784 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-25 08:46:14,784 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-25 08:46:14,784 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:46:14,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-25 08:46:14,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-25 08:46:14,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:14,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:14,785 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-25 08:46:14,785 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:14,786 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 123#L12-2 assume !!(main_~c~0 > 0); 121#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 124#L12-2 assume !!(main_~c~0 > 0); 125#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 117#L12-2 [2019-11-25 08:46:14,787 INFO L796 eck$LassoCheckResult]: Loop: 117#L12-2 assume !!(main_~c~0 > 0); 118#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 117#L12-2 [2019-11-25 08:46:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,787 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-11-25 08:46:14,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:14,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391568591] [2019-11-25 08:46:14,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,817 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-25 08:46:14,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:14,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843638561] [2019-11-25 08:46:14,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,835 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:14,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:14,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-11-25 08:46:14,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:14,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361581400] [2019-11-25 08:46:14,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:14,861 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:14,889 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:14,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:14,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:14,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:14,890 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:14,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:14,890 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:14,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2019-11-25 08:46:14,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:14,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:14,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:14,975 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:14,975 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:14,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:14,991 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:15,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:15,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:15,017 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:15,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:15,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:15,017 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:15,017 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:15,017 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:15,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:15,018 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2019-11-25 08:46:15,018 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:15,018 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:15,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,117 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:15,117 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,130 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 [2019-11-25 08:46:15,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:15,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:15,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:15,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:15,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:15,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:15,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,136 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:15,139 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:15,140 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,155 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:15,156 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:15,156 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:15,156 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:46:15,158 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,193 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:15,194 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 [2019-11-25 08:46:15,194 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-25 08:46:15,205 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-25 08:46:15,207 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 [2019-11-25 08:46:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-25 08:46:15,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-25 08:46:15,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,208 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,240 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:15,241 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-25 08:46:15,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-25 08:46:15,254 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-25 08:46:15,256 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 [2019-11-25 08:46:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-25 08:46:15,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-25 08:46:15,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,257 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:15,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,287 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:15,288 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 1 loop predicates [2019-11-25 08:46:15,288 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-25 08:46:15,300 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-11-25 08:46:15,301 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 [2019-11-25 08:46:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:46:15,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-25 08:46:15,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-25 08:46:15,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:46:15,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-11-25 08:46:15,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:46:15,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-25 08:46:15,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-25 08:46:15,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:46:15,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-25 08:46:15,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:15,305 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-25 08:46:15,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-25 08:46:15,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-11-25 08:46:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:46:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-25 08:46:15,309 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-25 08:46:15,310 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-25 08:46:15,310 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:46:15,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-25 08:46:15,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:46:15,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:15,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:15,312 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:46:15,313 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:15,313 INFO L794 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 261#L12-2 [2019-11-25 08:46:15,313 INFO L796 eck$LassoCheckResult]: Loop: 261#L12-2 assume !!(main_~c~0 > 0); 263#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 261#L12-2 [2019-11-25 08:46:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-25 08:46:15,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:15,314 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209865941] [2019-11-25 08:46:15,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,324 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-11-25 08:46:15,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:15,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453093897] [2019-11-25 08:46:15,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,344 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-11-25 08:46:15,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:15,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309406787] [2019-11-25 08:46:15,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,356 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:15,379 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:15,379 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:15,379 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:15,379 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:15,379 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:15,379 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,379 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:15,380 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:15,380 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2019-11-25 08:46:15,380 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:15,380 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:15,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,457 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:15,457 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:15,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:15,490 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:15,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:15,510 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:15,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:15,532 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:15,533 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=1} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:15,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:15,544 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:15,544 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:15,555 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:15,566 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,578 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:15,579 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:15,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:15,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:15,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:15,580 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:15,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:15,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:15,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2019-11-25 08:46:15,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:15,581 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:15,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,652 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:15,652 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,658 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 [2019-11-25 08:46:15,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:15,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:15,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:15,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:15,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:15,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:15,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,665 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,671 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 [2019-11-25 08:46:15,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:15,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:15,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:15,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:15,677 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:15,677 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,682 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,691 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 [2019-11-25 08:46:15,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:15,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:15,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:15,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:15,695 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:15,695 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,700 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,706 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 [2019-11-25 08:46:15,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:15,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:15,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:15,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:15,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:15,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:15,710 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,713 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:15,716 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:15,716 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:15,723 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:15,723 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:15,723 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,726 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:46:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,754 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:15,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:15,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:15,755 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 [2019-11-25 08:46:15,755 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-25 08:46:15,763 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 5 states. [2019-11-25 08:46:15,764 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 [2019-11-25 08:46:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2019-11-25 08:46:15,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-25 08:46:15,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-25 08:46:15,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:46:15,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:15,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-11-25 08:46:15,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:46:15,767 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2019-11-25 08:46:15,767 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-25 08:46:15,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-25 08:46:15,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-25 08:46:15,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:15,768 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-25 08:46:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-25 08:46:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-25 08:46:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:46:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2019-11-25 08:46:15,769 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2019-11-25 08:46:15,770 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2019-11-25 08:46:15,770 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:46:15,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2019-11-25 08:46:15,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:46:15,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:15,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:15,772 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-11-25 08:46:15,772 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-25 08:46:15,772 INFO L794 eck$LassoCheckResult]: Stem: 310#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 306#L12-2 assume !!(main_~c~0 > 0); 307#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 313#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2019-11-25 08:46:15,772 INFO L796 eck$LassoCheckResult]: Loop: 311#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 312#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2019-11-25 08:46:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,772 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-11-25 08:46:15,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:15,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114094554] [2019-11-25 08:46:15,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:15,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114094554] [2019-11-25 08:46:15,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:15,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:46:15,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45245583] [2019-11-25 08:46:15,821 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:46:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:15,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-11-25 08:46:15,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:15,821 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402176603] [2019-11-25 08:46:15,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:15,826 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:15,845 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:15,845 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:15,845 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:15,845 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:15,846 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:15,846 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,846 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:15,846 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:15,846 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2019-11-25 08:46:15,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:15,846 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:15,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,915 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:15,915 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:15,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:15,923 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:15,933 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:15,951 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:15,951 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}] Lambdas: [1, 15, 7] Nus: [1, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:15,955 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:15,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:15,970 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:15,976 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:15,976 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:15,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:15,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:15,976 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:15,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:15,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:15,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:15,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2019-11-25 08:46:15,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:15,977 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:15,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:15,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,046 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:16,046 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,059 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 [2019-11-25 08:46:16,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:16,060 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:16,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:16,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:16,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:16,061 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:16,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:16,066 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:16,075 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 [2019-11-25 08:46:16,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:16,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:16,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:16,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:16,079 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:16,079 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,082 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,086 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 [2019-11-25 08:46:16,088 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:16,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:16,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:16,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:16,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:16,088 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:16,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:16,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:16,092 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:16,092 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,096 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:16,096 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:16,096 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:16,096 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] [2019-11-25 08:46:16,098 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:46:16,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,125 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,153 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 [2019-11-25 08:46:16,153 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-25 08:46:16,160 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2019-11-25 08:46:16,161 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 [2019-11-25 08:46:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:46:16,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:46:16,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,162 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,184 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,199 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 [2019-11-25 08:46:16,199 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-25 08:46:16,214 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2019-11-25 08:46:16,214 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 [2019-11-25 08:46:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:16,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:46:16,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,215 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,236 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,251 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 [2019-11-25 08:46:16,251 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-25 08:46:16,259 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2019-11-25 08:46:16,259 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 [2019-11-25 08:46:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:46:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-25 08:46:16,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-25 08:46:16,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-25 08:46:16,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-25 08:46:16,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2019-11-25 08:46:16,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-25 08:46:16,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2019-11-25 08:46:16,263 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:46:16,263 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-25 08:46:16,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-11-25 08:46:16,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:16,263 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-25 08:46:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-11-25 08:46:16,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2019-11-25 08:46:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-25 08:46:16,264 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-25 08:46:16,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:46:16,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:16,267 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 4 states. [2019-11-25 08:46:16,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:16,286 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-11-25 08:46:16,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:46:16,287 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-11-25 08:46:16,287 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:46:16,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 10 transitions. [2019-11-25 08:46:16,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:46:16,288 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-25 08:46:16,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2019-11-25 08:46:16,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:16,288 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-11-25 08:46:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2019-11-25 08:46:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-25 08:46:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-25 08:46:16,289 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-25 08:46:16,289 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-25 08:46:16,290 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:46:16,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-25 08:46:16,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-25 08:46:16,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:16,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:16,290 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1] [2019-11-25 08:46:16,291 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-11-25 08:46:16,291 INFO L794 eck$LassoCheckResult]: Stem: 460#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 456#L12-2 assume !!(main_~c~0 > 0); 457#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2019-11-25 08:46:16,291 INFO L796 eck$LassoCheckResult]: Loop: 461#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2019-11-25 08:46:16,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,291 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 3 times [2019-11-25 08:46:16,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:16,291 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009120727] [2019-11-25 08:46:16,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:16,300 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2019-11-25 08:46:16,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:16,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459319333] [2019-11-25 08:46:16,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:16,308 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1848815782, now seen corresponding path program 4 times [2019-11-25 08:46:16,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:16,309 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444958698] [2019-11-25 08:46:16,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:16,321 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:16,373 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:16,373 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:16,373 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:16,373 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:16,373 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:16,373 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,373 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:16,373 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:16,373 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2019-11-25 08:46:16,374 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:16,374 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:16,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,442 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:16,442 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:16,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:16,448 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:16,448 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:16,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:16,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:16,456 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:16,461 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:16,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:16,474 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:16,476 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:16,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:16,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:16,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:16,476 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:16,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:16,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:16,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2019-11-25 08:46:16,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:16,477 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:16,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:16,570 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:16,571 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,575 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 [2019-11-25 08:46:16,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:16,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:16,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:16,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:16,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:16,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:16,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:16,580 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:16,587 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:16,587 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:16,595 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:16,595 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:16,595 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:16,595 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 201 Supporting invariants [] [2019-11-25 08:46:16,597 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,648 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:46:16,648 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-25 08:46:16,659 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2019-11-25 08:46:16,659 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 [2019-11-25 08:46:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:46:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-25 08:46:16,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:46:16,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,660 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:16,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,704 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:46:16,704 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-25 08:46:16,723 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 5 states. [2019-11-25 08:46:16,726 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 [2019-11-25 08:46:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:46:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:16,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:46:16,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,726 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,794 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 3 loop predicates [2019-11-25 08:46:16,794 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-25 08:46:16,807 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2019-11-25 08:46:16,808 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 [2019-11-25 08:46:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:46:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-25 08:46:16,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:46:16,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,809 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,873 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:46:16,873 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-25 08:46:16,889 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2019-11-25 08:46:16,890 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 [2019-11-25 08:46:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:46:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:46:16,891 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:46:16,891 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,891 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:16,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:16,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:16,938 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:46:16,938 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-25 08:46:16,988 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. Result 72 states and 96 transitions. Complement of second has 37 states 8 powerset states29 rank states. The highest rank that occured is 5 [2019-11-25 08:46:16,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:46:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-25 08:46:16,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-25 08:46:16,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,994 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-25 08:46:16,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2019-11-25 08:46:16,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:16,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2019-11-25 08:46:17,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-25 08:46:17,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 27 states and 38 transitions. [2019-11-25 08:46:17,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2019-11-25 08:46:17,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2019-11-25 08:46:17,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 38 transitions. [2019-11-25 08:46:17,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:17,001 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2019-11-25 08:46:17,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 38 transitions. [2019-11-25 08:46:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-11-25 08:46:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-25 08:46:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2019-11-25 08:46:17,004 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-11-25 08:46:17,004 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-11-25 08:46:17,004 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:46:17,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2019-11-25 08:46:17,005 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:46:17,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:17,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:17,006 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1] [2019-11-25 08:46:17,006 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2019-11-25 08:46:17,006 INFO L794 eck$LassoCheckResult]: Stem: 822#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 823#L12-2 assume !!(main_~c~0 > 0); 826#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2019-11-25 08:46:17,006 INFO L796 eck$LassoCheckResult]: Loop: 824#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2019-11-25 08:46:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash 659527871, now seen corresponding path program 5 times [2019-11-25 08:46:17,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346252215] [2019-11-25 08:46:17,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:46:17,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346252215] [2019-11-25 08:46:17,055 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139589731] [2019-11-25 08:46:17,055 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:17,082 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-25 08:46:17,082 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:46:17,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:46:17,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:46:17,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:17,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-25 08:46:17,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796523999] [2019-11-25 08:46:17,087 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:46:17,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 2 times [2019-11-25 08:46:17,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336944562] [2019-11-25 08:46:17,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,096 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:17,155 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:17,155 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:17,155 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:17,155 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:17,156 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:17,156 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,156 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:17,156 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:17,156 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2019-11-25 08:46:17,156 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:17,156 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:17,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,255 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:17,255 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:17,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:17,261 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:17,261 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:17,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:17,268 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:17,268 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:17,272 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 49 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 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:17,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:17,320 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:17,322 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:17,322 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:17,322 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:17,322 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:17,322 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:17,322 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,322 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:17,322 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:17,322 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2019-11-25 08:46:17,322 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:17,322 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:17,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,385 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:17,386 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:17,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:17,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:17,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:17,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:17,393 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:17,393 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:46:17,396 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:17,407 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 [2019-11-25 08:46:17,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:17,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:17,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:17,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:17,411 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:17,411 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,418 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:17,427 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 [2019-11-25 08:46:17,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:17,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:17,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:17,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:17,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:17,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:17,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,432 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:17,434 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:46:17,434 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:17,438 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:17,438 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:17,438 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:17,438 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-11-25 08:46:17,440 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:17,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:46:17,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:46:17,484 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-25 08:46:17,485 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-11-25 08:46:17,512 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 61 states and 87 transitions. Complement of second has 9 states. [2019-11-25 08:46:17,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:46:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-11-25 08:46:17,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-25 08:46:17,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:17,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-25 08:46:17,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:17,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 12 letters. [2019-11-25 08:46:17,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:17,515 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2019-11-25 08:46:17,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:46:17,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 52 states and 75 transitions. [2019-11-25 08:46:17,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:46:17,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-25 08:46:17,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 75 transitions. [2019-11-25 08:46:17,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:17,518 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 75 transitions. [2019-11-25 08:46:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 75 transitions. [2019-11-25 08:46:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2019-11-25 08:46:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-25 08:46:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2019-11-25 08:46:17,522 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 67 transitions. [2019-11-25 08:46:17,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:17,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:46:17,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:17,523 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand 5 states. [2019-11-25 08:46:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:17,545 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-25 08:46:17,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:46:17,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2019-11-25 08:46:17,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:46:17,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 27 states and 36 transitions. [2019-11-25 08:46:17,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2019-11-25 08:46:17,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2019-11-25 08:46:17,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2019-11-25 08:46:17,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:17,548 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-11-25 08:46:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2019-11-25 08:46:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-11-25 08:46:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-25 08:46:17,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-11-25 08:46:17,550 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-25 08:46:17,550 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-25 08:46:17,550 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-25 08:46:17,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2019-11-25 08:46:17,551 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-25 08:46:17,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:17,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:17,551 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 2, 2, 1] [2019-11-25 08:46:17,551 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2019-11-25 08:46:17,552 INFO L794 eck$LassoCheckResult]: Stem: 1076#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1077#L12-2 assume !!(main_~c~0 > 0); 1093#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1091#L12-2 assume !!(main_~c~0 > 0); 1084#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2019-11-25 08:46:17,552 INFO L796 eck$LassoCheckResult]: Loop: 1078#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2019-11-25 08:46:17,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1791617062, now seen corresponding path program 6 times [2019-11-25 08:46:17,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323703654] [2019-11-25 08:46:17,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,578 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:17,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 3 times [2019-11-25 08:46:17,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179054688] [2019-11-25 08:46:17,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:17,605 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:17,606 INFO L82 PathProgramCache]: Analyzing trace with hash 709032111, now seen corresponding path program 7 times [2019-11-25 08:46:17,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:17,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845042742] [2019-11-25 08:46:17,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:17,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845042742] [2019-11-25 08:46:17,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369582413] [2019-11-25 08:46:17,718 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:17,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:46:17,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:46:17,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:17,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2019-11-25 08:46:17,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172926371] [2019-11-25 08:46:17,879 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:17,879 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:17,879 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:17,879 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:17,879 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:17,879 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,879 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:17,879 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:17,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2019-11-25 08:46:17,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:17,880 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:17,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:17,955 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:17,955 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,959 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:17,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:17,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:17,962 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:17,966 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:17,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:17,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:18,031 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:18,032 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:18,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:18,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:18,033 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:18,033 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:18,033 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,033 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:18,033 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:18,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2019-11-25 08:46:18,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:18,033 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:18,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,102 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:18,103 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,106 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 [2019-11-25 08:46:18,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:18,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:18,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:18,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:18,109 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:18,109 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:46:18,114 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:18,127 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 [2019-11-25 08:46:18,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:18,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:18,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:18,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:18,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:18,130 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:18,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,133 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:18,136 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:18,136 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:18,142 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:18,143 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:18,143 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:18,143 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:46:18,145 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,209 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:46:18,209 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-11-25 08:46:18,230 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2019-11-25 08:46:18,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:46:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-25 08:46:18,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-25 08:46:18,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:18,231 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,291 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-25 08:46:18,291 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-11-25 08:46:18,309 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2019-11-25 08:46:18,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:46:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-25 08:46:18,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-25 08:46:18,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:18,312 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,376 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 4 loop predicates [2019-11-25 08:46:18,376 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-11-25 08:46:18,403 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 75 states and 99 transitions. Complement of second has 13 states. [2019-11-25 08:46:18,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:46:18,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-11-25 08:46:18,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-25 08:46:18,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:18,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2019-11-25 08:46:18,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:18,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2019-11-25 08:46:18,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:18,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 99 transitions. [2019-11-25 08:46:18,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2019-11-25 08:46:18,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 52 states and 71 transitions. [2019-11-25 08:46:18,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:46:18,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-25 08:46:18,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2019-11-25 08:46:18,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:18,409 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2019-11-25 08:46:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2019-11-25 08:46:18,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-25 08:46:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-25 08:46:18,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2019-11-25 08:46:18,413 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2019-11-25 08:46:18,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:18,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-25 08:46:18,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:46:18,413 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 15 states. [2019-11-25 08:46:18,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:18,556 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2019-11-25 08:46:18,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:46:18,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 181 transitions. [2019-11-25 08:46:18,558 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2019-11-25 08:46:18,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 109 states and 145 transitions. [2019-11-25 08:46:18,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:46:18,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-11-25 08:46:18,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 145 transitions. [2019-11-25 08:46:18,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:18,560 INFO L688 BuchiCegarLoop]: Abstraction has 109 states and 145 transitions. [2019-11-25 08:46:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 145 transitions. [2019-11-25 08:46:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 33. [2019-11-25 08:46:18,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-25 08:46:18,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-11-25 08:46:18,564 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-25 08:46:18,565 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-25 08:46:18,565 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-25 08:46:18,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2019-11-25 08:46:18,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:46:18,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:18,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:18,566 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-25 08:46:18,566 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 2, 2] [2019-11-25 08:46:18,566 INFO L794 eck$LassoCheckResult]: Stem: 1722#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1724#L12-2 assume !!(main_~c~0 > 0); 1738#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1735#L12-2 assume !!(main_~c~0 > 0); 1729#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1718#L12-2 [2019-11-25 08:46:18,566 INFO L796 eck$LassoCheckResult]: Loop: 1718#L12-2 assume !!(main_~c~0 > 0); 1719#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1728#L12-2 assume !!(main_~c~0 > 0); 1734#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1733#L12-2 assume !!(main_~c~0 > 0); 1725#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1726#L12-2 assume !!(main_~c~0 > 0); 1729#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1718#L12-2 [2019-11-25 08:46:18,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,566 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 4 times [2019-11-25 08:46:18,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:18,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157284348] [2019-11-25 08:46:18,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,573 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1687002897, now seen corresponding path program 4 times [2019-11-25 08:46:18,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:18,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007629328] [2019-11-25 08:46:18,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:46:18,606 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007629328] [2019-11-25 08:46:18,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:18,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:46:18,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467834343] [2019-11-25 08:46:18,607 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:46:18,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:46:18,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:46:18,608 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand 4 states. [2019-11-25 08:46:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:18,615 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-11-25 08:46:18,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:46:18,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2019-11-25 08:46:18,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-25 08:46:18,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 39 states and 47 transitions. [2019-11-25 08:46:18,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-25 08:46:18,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-25 08:46:18,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2019-11-25 08:46:18,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:18,618 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-11-25 08:46:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2019-11-25 08:46:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-11-25 08:46:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-25 08:46:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-11-25 08:46:18,620 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-11-25 08:46:18,620 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-11-25 08:46:18,620 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-25 08:46:18,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2019-11-25 08:46:18,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-25 08:46:18,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:18,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:18,621 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-25 08:46:18,621 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 3, 2] [2019-11-25 08:46:18,622 INFO L794 eck$LassoCheckResult]: Stem: 1813#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1815#L12-2 assume !!(main_~c~0 > 0); 1829#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1828#L12-2 assume !!(main_~c~0 > 0); 1821#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1809#L12-2 [2019-11-25 08:46:18,622 INFO L796 eck$LassoCheckResult]: Loop: 1809#L12-2 assume !!(main_~c~0 > 0); 1810#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1819#L12-2 assume !!(main_~c~0 > 0); 1826#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1823#L12-2 assume !!(main_~c~0 > 0); 1816#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1817#L12-2 assume !!(main_~c~0 > 0); 1827#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1824#L12-2 assume !!(main_~c~0 > 0); 1820#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1809#L12-2 [2019-11-25 08:46:18,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,622 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 5 times [2019-11-25 08:46:18,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:18,622 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697565573] [2019-11-25 08:46:18,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,627 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2007111828, now seen corresponding path program 5 times [2019-11-25 08:46:18,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:18,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439427418] [2019-11-25 08:46:18,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,636 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:18,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,637 INFO L82 PathProgramCache]: Analyzing trace with hash -254222659, now seen corresponding path program 8 times [2019-11-25 08:46:18,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:18,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636019799] [2019-11-25 08:46:18,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:18,650 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:18,723 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:18,723 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:18,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:18,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:18,723 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:18,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:18,724 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:18,724 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2019-11-25 08:46:18,724 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:18,724 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:18,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,779 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:18,779 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:18,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:18,787 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:46:18,791 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:18,795 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:18,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:18,806 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,813 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:18,815 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:18,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:18,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:18,815 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:18,815 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:18,815 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,815 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:18,815 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:18,815 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2019-11-25 08:46:18,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:18,816 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:18,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:18,881 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:18,881 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:18,891 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 [2019-11-25 08:46:18,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:18,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:18,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:18,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:18,895 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:46:18,895 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,898 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:18,904 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 [2019-11-25 08:46:18,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:18,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:18,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:18,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:18,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:18,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:18,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:18,921 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:18,921 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:46:18,925 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:18,925 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:18,926 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:18,926 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:46:18,927 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:18,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,992 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-25 08:46:18,992 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-25 08:46:18,997 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2019-11-25 08:46:18,997 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 [2019-11-25 08:46:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:18,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-25 08:46:18,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:18,998 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:19,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:19,079 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-25 08:46:19,079 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-25 08:46:19,082 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2019-11-25 08:46:19,082 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 [2019-11-25 08:46:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:19,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-25 08:46:19,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,083 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:19,152 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 5 loop predicates [2019-11-25 08:46:19,152 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-25 08:46:19,168 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 46 states and 60 transitions. Complement of second has 4 states. [2019-11-25 08:46:19,169 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 [2019-11-25 08:46:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:19,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:46:19,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-25 08:46:19,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,170 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:19,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Exception during sending of exit command (exit): Stream closed [2019-11-25 08:46:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:19,252 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-25 08:46:19,252 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-25 08:46:19,278 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 63 states and 75 transitions. Complement of second has 8 states. [2019-11-25 08:46:19,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-25 08:46:19,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-25 08:46:19,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,279 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:19,350 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-25 08:46:19,350 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-25 08:46:19,405 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,405 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,405 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,406 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,407 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,439 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,441 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,441 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,441 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:19,448 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. Result 404 states and 547 transitions. Complement of second has 85 states 12 powerset states73 rank states. The highest rank that occured is 7 [2019-11-25 08:46:19,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:46:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2019-11-25 08:46:19,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-25 08:46:19,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2019-11-25 08:46:19,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 20 letters. [2019-11-25 08:46:19,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,454 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 547 transitions. [2019-11-25 08:46:19,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2019-11-25 08:46:19,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 145 states and 187 transitions. [2019-11-25 08:46:19,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-25 08:46:19,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-25 08:46:19,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 187 transitions. [2019-11-25 08:46:19,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:19,461 INFO L688 BuchiCegarLoop]: Abstraction has 145 states and 187 transitions. [2019-11-25 08:46:19,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 187 transitions. [2019-11-25 08:46:19,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2019-11-25 08:46:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-25 08:46:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2019-11-25 08:46:19,468 INFO L711 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2019-11-25 08:46:19,468 INFO L591 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2019-11-25 08:46:19,468 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-25 08:46:19,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 129 transitions. [2019-11-25 08:46:19,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2019-11-25 08:46:19,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:19,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:19,470 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-25 08:46:19,470 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 4, 3] [2019-11-25 08:46:19,470 INFO L794 eck$LassoCheckResult]: Stem: 2806#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 2809#L12-2 assume !!(main_~c~0 > 0); 2833#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2829#L12-2 assume !!(main_~c~0 > 0); 2815#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2802#L12-2 [2019-11-25 08:46:19,470 INFO L796 eck$LassoCheckResult]: Loop: 2802#L12-2 assume !!(main_~c~0 > 0); 2803#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2864#L12-2 assume !!(main_~c~0 > 0); 2857#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2855#L12-2 assume !!(main_~c~0 > 0); 2849#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2848#L12-2 assume !!(main_~c~0 > 0); 2847#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2839#L12-2 assume !!(main_~c~0 > 0); 2818#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2830#L12-2 assume !!(main_~c~0 > 0); 2828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2826#L12-2 assume !!(main_~c~0 > 0); 2814#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2802#L12-2 [2019-11-25 08:46:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,471 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 6 times [2019-11-25 08:46:19,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:19,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481331466] [2019-11-25 08:46:19,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:19,477 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,478 INFO L82 PathProgramCache]: Analyzing trace with hash 822111324, now seen corresponding path program 6 times [2019-11-25 08:46:19,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:19,478 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820619953] [2019-11-25 08:46:19,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:19,489 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:19,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,490 INFO L82 PathProgramCache]: Analyzing trace with hash 128316933, now seen corresponding path program 9 times [2019-11-25 08:46:19,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:19,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592353892] [2019-11-25 08:46:19,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:19,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:19,610 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-11-25 08:46:19,621 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:19,621 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:19,621 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:19,621 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:19,621 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:19,621 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:19,621 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:19,622 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:19,622 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2019-11-25 08:46:19,622 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:19,622 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:19,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,684 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:19,684 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:19,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:19,688 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:19,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:19,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:19,698 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:19,699 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:19,699 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:19,699 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:19,699 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:19,699 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:19,699 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:19,699 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:19,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:19,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2019-11-25 08:46:19,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:19,700 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:19,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:19,767 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:19,767 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:19,770 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 [2019-11-25 08:46:19,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:19,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:19,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:19,772 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:19,772 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:19,773 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:19,773 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:19,775 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:19,777 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:19,777 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 70 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 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:19,779 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:19,780 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:19,780 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:19,780 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-25 08:46:19,781 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:46:19,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:19,862 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-25 08:46:19,862 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-25 08:46:19,867 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2019-11-25 08:46:19,869 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 [2019-11-25 08:46:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:46:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:19,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-25 08:46:19,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,870 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:19,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:19,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:19,976 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-25 08:46:19,977 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-25 08:46:19,984 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2019-11-25 08:46:19,984 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 [2019-11-25 08:46:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:46:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:19,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-25 08:46:19,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:19,985 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:20,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:20,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:20,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:20,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:20,092 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 7 loop predicates [2019-11-25 08:46:20,092 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-25 08:46:20,098 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 146 states and 191 transitions. Complement of second has 4 states. [2019-11-25 08:46:20,100 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 [2019-11-25 08:46:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:46:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:46:20,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-25 08:46:20,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:20,101 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:20,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:20,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:20,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:20,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:20,201 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:20,201 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-25 08:46:20,201 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-25 08:46:20,229 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 172 states and 219 transitions. Complement of second has 8 states. [2019-11-25 08:46:20,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:46:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-25 08:46:20,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-25 08:46:20,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:20,230 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:20,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:20,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:20,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:20,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:20,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:20,327 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-25 08:46:20,327 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-25 08:46:20,375 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,376 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,377 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,377 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,378 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,378 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,378 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,378 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,380 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,380 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,380 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,381 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,440 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,442 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,442 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,443 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,443 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,443 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,443 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,443 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,444 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,444 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,444 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,444 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,444 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,447 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,447 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,447 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,448 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,448 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,448 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,448 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,448 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,515 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,516 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,517 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,517 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,517 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,517 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,521 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,522 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,522 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,522 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,522 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,523 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,523 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,523 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,523 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,524 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,524 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,524 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,524 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,525 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,525 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,525 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,525 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,525 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,526 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,526 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-25 08:46:20,563 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. Result 1787 states and 2714 transitions. Complement of second has 144 states 16 powerset states128 rank states. The highest rank that occured is 7 [2019-11-25 08:46:20,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:46:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2019-11-25 08:46:20,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-25 08:46:20,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:20,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 19 letters. Loop has 14 letters. [2019-11-25 08:46:20,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:20,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 28 letters. [2019-11-25 08:46:20,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:20,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1787 states and 2714 transitions. [2019-11-25 08:46:20,591 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2019-11-25 08:46:20,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1787 states to 471 states and 636 transitions. [2019-11-25 08:46:20,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-25 08:46:20,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-25 08:46:20,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 471 states and 636 transitions. [2019-11-25 08:46:20,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:46:20,596 INFO L688 BuchiCegarLoop]: Abstraction has 471 states and 636 transitions. [2019-11-25 08:46:20,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states and 636 transitions. [2019-11-25 08:46:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 260. [2019-11-25 08:46:20,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2019-11-25 08:46:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 376 transitions. [2019-11-25 08:46:20,631 INFO L711 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2019-11-25 08:46:20,631 INFO L591 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2019-11-25 08:46:20,631 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-25 08:46:20,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 260 states and 376 transitions. [2019-11-25 08:46:20,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2019-11-25 08:46:20,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:46:20,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:46:20,634 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-25 08:46:20,634 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 5, 4] [2019-11-25 08:46:20,634 INFO L794 eck$LassoCheckResult]: Stem: 5719#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 5724#L12-2 assume !!(main_~c~0 > 0); 5765#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5737#L12-2 assume !!(main_~c~0 > 0); 5733#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5715#L12-2 [2019-11-25 08:46:20,635 INFO L796 eck$LassoCheckResult]: Loop: 5715#L12-2 assume !!(main_~c~0 > 0); 5716#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5934#L12-2 assume !!(main_~c~0 > 0); 5861#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5859#L12-2 assume !!(main_~c~0 > 0); 5857#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5855#L12-2 assume !!(main_~c~0 > 0); 5852#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5841#L12-2 assume !!(main_~c~0 > 0); 5842#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5824#L12-2 assume !!(main_~c~0 > 0); 5825#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5816#L12-2 assume !!(main_~c~0 > 0); 5736#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5759#L12-2 assume !!(main_~c~0 > 0); 5738#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5735#L12-2 assume !!(main_~c~0 > 0); 5732#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5715#L12-2 [2019-11-25 08:46:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:20,635 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 7 times [2019-11-25 08:46:20,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:20,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627364786] [2019-11-25 08:46:20,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,651 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:20,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1476420572, now seen corresponding path program 7 times [2019-11-25 08:46:20,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:20,653 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874523704] [2019-11-25 08:46:20,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,679 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:20,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:20,681 INFO L82 PathProgramCache]: Analyzing trace with hash 939927885, now seen corresponding path program 10 times [2019-11-25 08:46:20,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:20,681 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878963149] [2019-11-25 08:46:20,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,694 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:20,821 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-11-25 08:46:20,836 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:20,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:20,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:20,837 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:20,837 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:46:20,837 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:20,837 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:20,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:20,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2019-11-25 08:46:20,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:20,837 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:20,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,884 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:20,885 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 71 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 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:20,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:46:20,890 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 72 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 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:20,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:46:20,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:46:20,938 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:46:20,940 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:46:20,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:46:20,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:46:20,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:46:20,940 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:46:20,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:20,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:46:20,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:46:20,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2019-11-25 08:46:20,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:46:20,940 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:46:20,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:46:20,990 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:46:20,990 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:21,007 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 [2019-11-25 08:46:21,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:46:21,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:46:21,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:46:21,009 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:46:21,009 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:46:21,009 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:46:21,009 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:46:21,011 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:46:21,013 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:46:21,013 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79ee085f-3a22-4f74-b833-59a0270d47cf/bin/uautomizer/z3 Starting monitored process 74 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 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:46:21,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:46:21,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:46:21,016 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:46:21,016 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-11-25 08:46:21,018 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:46:21,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-25 08:46:21,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-25 08:46:21,091 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-25 08:46:21,105 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2019-11-25 08:46:21,106 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 [2019-11-25 08:46:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:46:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:21,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-25 08:46:21,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:21,107 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:21,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-25 08:46:21,189 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-25 08:46:21,189 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-25 08:46:21,199 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2019-11-25 08:46:21,202 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 [2019-11-25 08:46:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:46:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-25 08:46:21,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-25 08:46:21,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:21,203 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-25 08:46:21,283 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 6 loop predicates [2019-11-25 08:46:21,283 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-25 08:46:21,311 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 392 states and 547 transitions. Complement of second has 7 states. [2019-11-25 08:46:21,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:46:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-11-25 08:46:21,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-25 08:46:21,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:21,314 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-25 08:46:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:21,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:46:21,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-25 08:46:21,388 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-25 08:46:21,388 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-25 08:46:21,445 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 511 states and 724 transitions. Complement of second has 12 states. [2019-11-25 08:46:21,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-11-25 08:46:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:46:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2019-11-25 08:46:21,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-25 08:46:21,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:21,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 23 letters. Loop has 18 letters. [2019-11-25 08:46:21,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:21,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 36 letters. [2019-11-25 08:46:21,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:46:21,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 724 transitions. [2019-11-25 08:46:21,450 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:46:21,451 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 0 states and 0 transitions. [2019-11-25 08:46:21,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-25 08:46:21,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-25 08:46:21,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-25 08:46:21,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:46:21,451 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:21,451 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:21,451 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:46:21,451 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-11-25 08:46:21,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:46:21,452 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-25 08:46:21,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-25 08:46:21,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:46:21 BoogieIcfgContainer [2019-11-25 08:46:21,459 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:46:21,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:21,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:21,461 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:21,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:13" (3/4) ... [2019-11-25 08:46:21,465 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:46:21,465 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:21,466 INFO L168 Benchmark]: Toolchain (without parser) took 8683.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 212.9 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:21,466 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:21,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -175.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:21,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.12 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. [2019-11-25 08:46:21,469 INFO L168 Benchmark]: Boogie Preprocessor took 16.68 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. [2019-11-25 08:46:21,469 INFO L168 Benchmark]: RCFGBuilder took 218.62 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:21,470 INFO L168 Benchmark]: BuchiAutomizer took 8096.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -18.1 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:21,470 INFO L168 Benchmark]: Witness Printer took 4.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:21,472 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -175.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.12 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. * Boogie Preprocessor took 16.68 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. * RCFGBuilder took 218.62 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8096.90 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -18.1 MB). Peak memory consumption was 63.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 15 terminating modules (4 trivial, 4 deterministic, 7 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function c and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One deterministic module has affine ranking function c and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 201 and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 9 locations. One nondeterministic module has affine ranking function c and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.0s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 4.5s. Construction of modules took 0.3s. Büchi inclusion checks took 2.8s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 14. Automata minimization 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 393 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 260 states and ocurred in iteration 11. Nontrivial modules had stage [4, 0, 3, 1, 3]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 105/148 HoareTripleCheckerStatistics: 154 SDtfs, 161 SDslu, 64 SDs, 0 SdLazy, 353 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax160 hnf98 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp96 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...